TY  - JOUR
AU  - Mitrevski, Jasmina
AU  - Pantelić, Nebojša Đ.
AU  - Dodevska, Margarita S.
AU  - Kojić, Jovana S.
AU  - Vulić, Jelena J.
AU  - Zlatanović, Snežana
AU  - Gorjanović, Stanislava
AU  - Laličić-Petronijević, Jovanka
AU  - Marjanović, Sanja
AU  - Antić, Vesna V.
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6273
AB  - The demand for ready-to-use functional foods is high, which encourages manufacturers to develop new, nutritionally valuable products. As an excellent source of biologically active compounds, beetroot (Beta vulgaris L.) is considered to have highly beneficial effects on health. This research aimed to evaluate the impact of replacing spelt flour (SF) with 15%, 20% and 25% beetroot powder (BP). The physicochemical and functional properties of biscuits baked at different temperatures (150 and 170 °C) were followed at the beginning, and after 3 and 6 months of storage as standard conditions. Moisture content and water activity (aw) gave insight into the biscuits’ shelf life. The value of aw from 0.35 to 0.56 indicated appropriate storability. Dietary fiber content in fresh biscuits ranged from 6.1% to 7.6%, protein from 9.2% to 8.9% and sugar from 30.6% to 35.9%. The content of betalain, total polyphenols and flavonoids, and antioxidant activity (DPPH, FRAP) increased with beetroot powder content incorporated. A slight decrease of all the mentioned parameters during the storage indicated satisfied retention of bioactive molecules. The content of prevalent phenolic compounds gallic and protocatechuic acid, identified by HPLC, decreased from 22.2–32.0 and 21.1–24.9 in fresh biscuits to 18.3–23.4 and 17.3–20.3 mg/100 g upon six months of storage, respectively. An increase of the L* and a* and a decrease of the b* coordinate values, compared with the control sample without beetroot values, was noticed as well as the expected level of their change during the storage. The obtained results indicated that biscuits enriched with beetroot powder showed a significantly improved functional, nutritional and antioxidant potential during storage. © 2023 by the authors.
T2  - Foods
T2  - Foods
T1  - Effect of Beetroot Powder Incorporation on Functional Properties and Shelf Life of Biscuits
IS  - 2
VL  - 12
DO  - 10.3390/foods12020322
ER  - 

@article{
author = "Mitrevski, Jasmina and Pantelić, Nebojša Đ. and Dodevska, Margarita S. and Kojić, Jovana S. and Vulić, Jelena J. and Zlatanović, Snežana and Gorjanović, Stanislava and Laličić-Petronijević, Jovanka and Marjanović, Sanja and Antić, Vesna V.",
year = "2023",
abstract = "The demand for ready-to-use functional foods is high, which encourages manufacturers to develop new, nutritionally valuable products. As an excellent source of biologically active compounds, beetroot (Beta vulgaris L.) is considered to have highly beneficial effects on health. This research aimed to evaluate the impact of replacing spelt flour (SF) with 15%, 20% and 25% beetroot powder (BP). The physicochemical and functional properties of biscuits baked at different temperatures (150 and 170 °C) were followed at the beginning, and after 3 and 6 months of storage as standard conditions. Moisture content and water activity (aw) gave insight into the biscuits’ shelf life. The value of aw from 0.35 to 0.56 indicated appropriate storability. Dietary fiber content in fresh biscuits ranged from 6.1% to 7.6%, protein from 9.2% to 8.9% and sugar from 30.6% to 35.9%. The content of betalain, total polyphenols and flavonoids, and antioxidant activity (DPPH, FRAP) increased with beetroot powder content incorporated. A slight decrease of all the mentioned parameters during the storage indicated satisfied retention of bioactive molecules. The content of prevalent phenolic compounds gallic and protocatechuic acid, identified by HPLC, decreased from 22.2–32.0 and 21.1–24.9 in fresh biscuits to 18.3–23.4 and 17.3–20.3 mg/100 g upon six months of storage, respectively. An increase of the L* and a* and a decrease of the b* coordinate values, compared with the control sample without beetroot values, was noticed as well as the expected level of their change during the storage. The obtained results indicated that biscuits enriched with beetroot powder showed a significantly improved functional, nutritional and antioxidant potential during storage. © 2023 by the authors.",
journal = "Foods, Foods",
title = "Effect of Beetroot Powder Incorporation on Functional Properties and Shelf Life of Biscuits",
number = "2",
volume = "12",
doi = "10.3390/foods12020322"
}

Mitrevski, J., Pantelić, N. Đ., Dodevska, M. S., Kojić, J. S., Vulić, J. J., Zlatanović, S., Gorjanović, S., Laličić-Petronijević, J., Marjanović, S.,& Antić, V. V.. (2023). Effect of Beetroot Powder Incorporation on Functional Properties and Shelf Life of Biscuits. in Foods, 12(2).
https://doi.org/10.3390/foods12020322

Mitrevski J, Pantelić NĐ, Dodevska MS, Kojić JS, Vulić JJ, Zlatanović S, Gorjanović S, Laličić-Petronijević J, Marjanović S, Antić VV. Effect of Beetroot Powder Incorporation on Functional Properties and Shelf Life of Biscuits. in Foods. 2023;12(2).
doi:10.3390/foods12020322 .

Mitrevski, Jasmina, Pantelić, Nebojša Đ., Dodevska, Margarita S., Kojić, Jovana S., Vulić, Jelena J., Zlatanović, Snežana, Gorjanović, Stanislava, Laličić-Petronijević, Jovanka, Marjanović, Sanja, Antić, Vesna V., "Effect of Beetroot Powder Incorporation on Functional Properties and Shelf Life of Biscuits" in Foods, 12, no. 2 (2023),
https://doi.org/10.3390/foods12020322 . .

TY  - JOUR
AU  - Vidović, Nada
AU  - Antić, Vesna
AU  - Schwarzbauer, Jan
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6346
AB  - Reliable identification and quantification of water-soluble synthetic polymers (WSSP), such as polyethyleneimine (PEI), is crucial for understanding their potential impact on certain ecological environments. Therefore, this study proposes an analytical method combining on-line and off-line pyrolysis GC/MS to investigate the pyrolytic degradation. mechanism of branched PEI and develop a calibration method using specific pyrolysis. products, including methylpyrazine, dimethylpyrazine, ethylmethylpyrazine, trimethylpyrazine, methylpropylpyrazine and ethyldimethylpyrazine, for the. quantification of PEI in environmental wastewater samples. The developed analytical. method shows adequate linearity for all molecular ions of the specific pyrolysis. products, with a determination coefficient ranging from 0.95 to 0.98 for the range of 10–500 μg PEI. The limit of quantification for this method lies between 1 and 10 μg/L of PEI. The accuracy (absolute recovery 71–95%) and reproducibility (RSD < 30%) were. evaluated by multiple spiking/recovery experiments at a PEI level of 500 μg. Using this. method for samples collected from different wastewater treatment plants in Germany. reveals a significant emission of PEI to the aquatic environment with concentrations. ranging from 0.08 mg L-1–0.55 mg L-1, and thus demonstrating its applicability in. environmental studies. To the best of our knowledge, this is the first report on the. occurrence of PEI in environmental samples. © 2023 Elsevier B.V.
T2  - Journal of Analytical and Applied Pyrolysis
T2  - Journal of Analytical and Applied Pyrolysis
T1  - Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS
VL  - 172
DO  - 10.1016/j.jaap.2023.106001
ER  - 

@article{
author = "Vidović, Nada and Antić, Vesna and Schwarzbauer, Jan",
year = "2023",
abstract = "Reliable identification and quantification of water-soluble synthetic polymers (WSSP), such as polyethyleneimine (PEI), is crucial for understanding their potential impact on certain ecological environments. Therefore, this study proposes an analytical method combining on-line and off-line pyrolysis GC/MS to investigate the pyrolytic degradation. mechanism of branched PEI and develop a calibration method using specific pyrolysis. products, including methylpyrazine, dimethylpyrazine, ethylmethylpyrazine, trimethylpyrazine, methylpropylpyrazine and ethyldimethylpyrazine, for the. quantification of PEI in environmental wastewater samples. The developed analytical. method shows adequate linearity for all molecular ions of the specific pyrolysis. products, with a determination coefficient ranging from 0.95 to 0.98 for the range of 10–500 μg PEI. The limit of quantification for this method lies between 1 and 10 μg/L of PEI. The accuracy (absolute recovery 71–95%) and reproducibility (RSD < 30%) were. evaluated by multiple spiking/recovery experiments at a PEI level of 500 μg. Using this. method for samples collected from different wastewater treatment plants in Germany. reveals a significant emission of PEI to the aquatic environment with concentrations. ranging from 0.08 mg L-1–0.55 mg L-1, and thus demonstrating its applicability in. environmental studies. To the best of our knowledge, this is the first report on the. occurrence of PEI in environmental samples. © 2023 Elsevier B.V.",
journal = "Journal of Analytical and Applied Pyrolysis, Journal of Analytical and Applied Pyrolysis",
title = "Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS",
volume = "172",
doi = "10.1016/j.jaap.2023.106001"
}

Vidović, N., Antić, V.,& Schwarzbauer, J.. (2023). Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS. in Journal of Analytical and Applied Pyrolysis, 172.
https://doi.org/10.1016/j.jaap.2023.106001

Vidović N, Antić V, Schwarzbauer J. Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS. in Journal of Analytical and Applied Pyrolysis. 2023;172.
doi:10.1016/j.jaap.2023.106001 .

Vidović, Nada, Antić, Vesna, Schwarzbauer, Jan, "Determination of the water-soluble polymer poly(ethyleneimine) (PEI) in wastewater by continuous-flow off-line pyrolysis GC/MS" in Journal of Analytical and Applied Pyrolysis, 172 (2023),
https://doi.org/10.1016/j.jaap.2023.106001 . .

TY  - JOUR
AU  - Stojanović, Branislav Đ.
AU  - Stojanović, Zdenka M.
AU  - Marjanović, Sonja S.
AU  - Janković, Saša D.
AU  - Antić, Mališa P.
AU  - Balaban, Milica R.
AU  - Antić, Vesna V.
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6284
AB  - Macroelements such as Na, K, Ca, and Mg play a significant physiological role, and their inadequate intake has been linked to severe diseases, such as high blood pressure. Data on risk assessment for human health in Serbia, from the intake of these macroelements through the consumption of canned food, are minimal. Therefore, the content of Na, K, Ca, and Mg in five types of canned meat that members of the Serbian Armed Forces regularly use was examined. Macroelements were determined by inductively coupled plasma mass spectrometry in cans of beef goulash, pork ragout, spam, liver pate, and meatballs in tomato sauce, which were stored from one month to six years. The sodium content was significantly higher than the potassium content in all types of food, so the Na/K ratio below 1, desirable for good health, was not found in any of the analyzed products. Also, a significant number of samples had an unfavorable Ca/Mg ratio above 1. However, due to the low consumption of canned food by members of the Serbian Armed Forces, its contribution to the average daily intake of macroelements is almost negligible. The concentration of macroelements decreased with the shelf life, while a significant source of Ka and Mg, among analyzed ingredients, was ground red pepper. © 2022 University of Belgrade - Faculty of Agriculture. All Rights Reserved.
T2  - Journal of Agricultural Sciences (Belgrade)
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - CANNED MEAT PRODUCTS FOR MEMBERS OF THE SERBIAN ARMED FORCES: Na, K, Ca, AND Mg CONTENT AND HEALTH RISKS/BENEFITS
EP  - 431
IS  - 4
SP  - 415
VL  - 67
DO  - 10.2298/JAS2204415S
ER  - 

@article{
author = "Stojanović, Branislav Đ. and Stojanović, Zdenka M. and Marjanović, Sonja S. and Janković, Saša D. and Antić, Mališa P. and Balaban, Milica R. and Antić, Vesna V.",
year = "2022",
abstract = "Macroelements such as Na, K, Ca, and Mg play a significant physiological role, and their inadequate intake has been linked to severe diseases, such as high blood pressure. Data on risk assessment for human health in Serbia, from the intake of these macroelements through the consumption of canned food, are minimal. Therefore, the content of Na, K, Ca, and Mg in five types of canned meat that members of the Serbian Armed Forces regularly use was examined. Macroelements were determined by inductively coupled plasma mass spectrometry in cans of beef goulash, pork ragout, spam, liver pate, and meatballs in tomato sauce, which were stored from one month to six years. The sodium content was significantly higher than the potassium content in all types of food, so the Na/K ratio below 1, desirable for good health, was not found in any of the analyzed products. Also, a significant number of samples had an unfavorable Ca/Mg ratio above 1. However, due to the low consumption of canned food by members of the Serbian Armed Forces, its contribution to the average daily intake of macroelements is almost negligible. The concentration of macroelements decreased with the shelf life, while a significant source of Ka and Mg, among analyzed ingredients, was ground red pepper. © 2022 University of Belgrade - Faculty of Agriculture. All Rights Reserved.",
journal = "Journal of Agricultural Sciences (Belgrade), Journal of Agricultural Sciences (Belgrade)",
title = "CANNED MEAT PRODUCTS FOR MEMBERS OF THE SERBIAN ARMED FORCES: Na, K, Ca, AND Mg CONTENT AND HEALTH RISKS/BENEFITS",
pages = "431-415",
number = "4",
volume = "67",
doi = "10.2298/JAS2204415S"
}

Stojanović, B. Đ., Stojanović, Z. M., Marjanović, S. S., Janković, S. D., Antić, M. P., Balaban, M. R.,& Antić, V. V.. (2022). CANNED MEAT PRODUCTS FOR MEMBERS OF THE SERBIAN ARMED FORCES: Na, K, Ca, AND Mg CONTENT AND HEALTH RISKS/BENEFITS. in Journal of Agricultural Sciences (Belgrade), 67(4), 415-431.
https://doi.org/10.2298/JAS2204415S

Stojanović BĐ, Stojanović ZM, Marjanović SS, Janković SD, Antić MP, Balaban MR, Antić VV. CANNED MEAT PRODUCTS FOR MEMBERS OF THE SERBIAN ARMED FORCES: Na, K, Ca, AND Mg CONTENT AND HEALTH RISKS/BENEFITS. in Journal of Agricultural Sciences (Belgrade). 2022;67(4):415-431.
doi:10.2298/JAS2204415S .

Stojanović, Branislav Đ., Stojanović, Zdenka M., Marjanović, Sonja S., Janković, Saša D., Antić, Mališa P., Balaban, Milica R., Antić, Vesna V., "CANNED MEAT PRODUCTS FOR MEMBERS OF THE SERBIAN ARMED FORCES: Na, K, Ca, AND Mg CONTENT AND HEALTH RISKS/BENEFITS" in Journal of Agricultural Sciences (Belgrade), 67, no. 4 (2022):415-431,
https://doi.org/10.2298/JAS2204415S . .

TY  - JOUR
AU  - Savić, Dajana
AU  - Balaban, Milica
AU  - Pantelić, Nebojša
AU  - Savić, Dejana N.
AU  - Antić, Mališa
AU  - Dekić, Radoslav
AU  - Antić, Vesna
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6015
AB  - The bisphenol A (BPA) concentration was determined in 12 surface water samples of the Vrbas River and its five tributaries. The samples were taken in the area that belongs to the city of Banja Luka (Bosnia and Herzegovina). BPA was isolated using micro liquid-liquid extraction followed by derivatization and gas chromatography-mass spectrometry analysis (GC-MS). Silylation was used as a derivatization method to increase volatility and allow the GC-MS determination of BPA. The limits of detection (LOD) and quantification (LOQ), obtained by validating the procedure, were determined at 4 and 10 ng L-1, respectively. The concentrations of BPA were ranged between 33 and 354 ng L-1, and all were above the LOQ value. The lowest amount of BPA was found in the sample collected in the river Vrbas, near Švrakava estuary upstream from the city of Banja Luka. The highest concentration of BPA was recorded at the confluence of the Crkvena and Vrbas rivers, which is located in the city center. This study shows that population and human activity could affect the level of BPA in the environment.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Determination of bisphenol A traces in water samples from the Vrbas River and its tributaries, Bosnia and Herzegovina
EP  - 119
IS  - 1
SP  - 109
VL  - 87
DO  - 10.2298/JSC211001098S
ER  - 

@article{
author = "Savić, Dajana and Balaban, Milica and Pantelić, Nebojša and Savić, Dejana N. and Antić, Mališa and Dekić, Radoslav and Antić, Vesna",
year = "2022",
abstract = "The bisphenol A (BPA) concentration was determined in 12 surface water samples of the Vrbas River and its five tributaries. The samples were taken in the area that belongs to the city of Banja Luka (Bosnia and Herzegovina). BPA was isolated using micro liquid-liquid extraction followed by derivatization and gas chromatography-mass spectrometry analysis (GC-MS). Silylation was used as a derivatization method to increase volatility and allow the GC-MS determination of BPA. The limits of detection (LOD) and quantification (LOQ), obtained by validating the procedure, were determined at 4 and 10 ng L-1, respectively. The concentrations of BPA were ranged between 33 and 354 ng L-1, and all were above the LOQ value. The lowest amount of BPA was found in the sample collected in the river Vrbas, near Švrakava estuary upstream from the city of Banja Luka. The highest concentration of BPA was recorded at the confluence of the Crkvena and Vrbas rivers, which is located in the city center. This study shows that population and human activity could affect the level of BPA in the environment.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Determination of bisphenol A traces in water samples from the Vrbas River and its tributaries, Bosnia and Herzegovina",
pages = "119-109",
number = "1",
volume = "87",
doi = "10.2298/JSC211001098S"
}

Savić, D., Balaban, M., Pantelić, N., Savić, D. N., Antić, M., Dekić, R.,& Antić, V.. (2022). Determination of bisphenol A traces in water samples from the Vrbas River and its tributaries, Bosnia and Herzegovina. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 87(1), 109-119.
https://doi.org/10.2298/JSC211001098S

Savić D, Balaban M, Pantelić N, Savić DN, Antić M, Dekić R, Antić V. Determination of bisphenol A traces in water samples from the Vrbas River and its tributaries, Bosnia and Herzegovina. in Journal of the Serbian Chemical Society. 2022;87(1):109-119.
doi:10.2298/JSC211001098S .

Savić, Dajana, Balaban, Milica, Pantelić, Nebojša, Savić, Dejana N., Antić, Mališa, Dekić, Radoslav, Antić, Vesna, "Determination of bisphenol A traces in water samples from the Vrbas River and its tributaries, Bosnia and Herzegovina" in Journal of the Serbian Chemical Society, 87, no. 1 (2022):109-119,
https://doi.org/10.2298/JSC211001098S . .

TY  - JOUR
AU  - Stojanović, Branislav
AU  - Janković, Saša
AU  - Đorđević, Vesna Ž.
AU  - Marjanović, Sonja
AU  - Vasilev, Dragan
AU  - Stojanović, Zdenka
AU  - Balaban, Milica
AU  - Antić, Vesna
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5854
AB  - This work aimed to examine the influence of the storage period on the content of toxic elements (As, Cd, Hg, and Pb) in five types of canned meat products regularly used in the Serbian Armed Forces. Cans of beef goulash (BG), pork ragout (PR), spam (SP), liver pate (LP), and meatballs in tomato sauce (MB), produced according to military standards and stored under regular conditions, were analyzed. Meat products were packed in tin cans made according to special requirements in terms of tin and varnish application and stored for up to 6 years. The content of toxic elements varied depending on the analyzed product. The highest average content of arsenic was in BG (10.00 μg/kg), cadmium in LP (35.91 μg/kg), and mercury and lead in PR (15.04 and 8.00 μg/kg, respectively). The average concentrations of As, Cd, Hg, and Pb in all types of canned meat products were significantly lower than the maximum permitted levels in food currently in force by local and EU legislation. The storage period did not significantly affect the level of toxic elements, although higher concentrations were found in samples stored for more than 2 years. Examination of raw materials, spices, and additives showed that the highest Cd and Pb concentrations, which can affect the total level of these elements in meat products, were found in red ground pepper (Cd above 150 μg/kg) and dish supplement (Pb of 250 μg/kg). The assessment of the weekly intake of toxic elements through canned meat showed that it is significantly lower than the values that affect adversely to human health, as determined by the FAO/WHO and EFSA. However, as there is a constant possibility of contamination of raw materials and food additives, primarily due to environmental pollution, it is recommended to monitor the content of heavy metals in food permanently and assess their risk to human health.
PB  - Springer Link
T2  - Environmental Science and Pollution Research
T1  - Determination of toxic elements in meat products from Serbia packaged in tinplate cans
DO  - 10.1007/s11356-021-14051-w
ER  - 

@article{
author = "Stojanović, Branislav and Janković, Saša and Đorđević, Vesna Ž. and Marjanović, Sonja and Vasilev, Dragan and Stojanović, Zdenka and Balaban, Milica and Antić, Vesna",
year = "2021",
abstract = "This work aimed to examine the influence of the storage period on the content of toxic elements (As, Cd, Hg, and Pb) in five types of canned meat products regularly used in the Serbian Armed Forces. Cans of beef goulash (BG), pork ragout (PR), spam (SP), liver pate (LP), and meatballs in tomato sauce (MB), produced according to military standards and stored under regular conditions, were analyzed. Meat products were packed in tin cans made according to special requirements in terms of tin and varnish application and stored for up to 6 years. The content of toxic elements varied depending on the analyzed product. The highest average content of arsenic was in BG (10.00 μg/kg), cadmium in LP (35.91 μg/kg), and mercury and lead in PR (15.04 and 8.00 μg/kg, respectively). The average concentrations of As, Cd, Hg, and Pb in all types of canned meat products were significantly lower than the maximum permitted levels in food currently in force by local and EU legislation. The storage period did not significantly affect the level of toxic elements, although higher concentrations were found in samples stored for more than 2 years. Examination of raw materials, spices, and additives showed that the highest Cd and Pb concentrations, which can affect the total level of these elements in meat products, were found in red ground pepper (Cd above 150 μg/kg) and dish supplement (Pb of 250 μg/kg). The assessment of the weekly intake of toxic elements through canned meat showed that it is significantly lower than the values that affect adversely to human health, as determined by the FAO/WHO and EFSA. However, as there is a constant possibility of contamination of raw materials and food additives, primarily due to environmental pollution, it is recommended to monitor the content of heavy metals in food permanently and assess their risk to human health.",
publisher = "Springer Link",
journal = "Environmental Science and Pollution Research",
title = "Determination of toxic elements in meat products from Serbia packaged in tinplate cans",
doi = "10.1007/s11356-021-14051-w"
}

Stojanović, B., Janković, S., Đorđević, V. Ž., Marjanović, S., Vasilev, D., Stojanović, Z., Balaban, M.,& Antić, V.. (2021). Determination of toxic elements in meat products from Serbia packaged in tinplate cans. in Environmental Science and Pollution Research
Springer Link..
https://doi.org/10.1007/s11356-021-14051-w

Stojanović B, Janković S, Đorđević VŽ, Marjanović S, Vasilev D, Stojanović Z, Balaban M, Antić V. Determination of toxic elements in meat products from Serbia packaged in tinplate cans. in Environmental Science and Pollution Research. 2021;.
doi:10.1007/s11356-021-14051-w .

Stojanović, Branislav, Janković, Saša, Đorđević, Vesna Ž., Marjanović, Sonja, Vasilev, Dragan, Stojanović, Zdenka, Balaban, Milica, Antić, Vesna, "Determination of toxic elements in meat products from Serbia packaged in tinplate cans" in Environmental Science and Pollution Research (2021),
https://doi.org/10.1007/s11356-021-14051-w . .

TY  - JOUR
AU  - Stojanović, Branislav
AU  - Radović, Ljubica
AU  - Natić, Dejan
AU  - Dodevska, Margarita
AU  - Vrastanović-Pavicević, Gordana
AU  - Balaban, Milica
AU  - Stojanović, Zdenka
AU  - Antić, Vesna
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5362
AB  - The aim of this work was to assume the amount of BPA that can migrate to food packed into the cans coated by epoxy-phenolic lacquer. The assumption was made by determining the amount of BPA which migrates from the inner can coating to different food simulants: 3% acetic acid, 10% ethanol, their mixture (3% acetic acid +10% ethanol), and 50% ethanol. The examined tinplate cans were made by the special requirements of the Serbian Armed Forces. Further, the effect of the sterilization process and the very initial time of storage (15-105 days), on the level of BPA in the canned meatballs in tomato sauce, which are in the regular use of the Serbian Armed Forces, was examined. The BPA content was determined by the high performance liquid chromatography-mass spectrometry (HPLC-MS), and compared with BPA content found in the food simulants.
PB  - Wiley, Hoboken
T2  - Packaging Technology and Science
T1  - Migration of bisphenol a into food simulants and meat rations during initial time of storage
EP  - 82
IS  - 2
SP  - 75
VL  - 33
DO  - 10.1002/pts.2485
ER  - 

@article{
author = "Stojanović, Branislav and Radović, Ljubica and Natić, Dejan and Dodevska, Margarita and Vrastanović-Pavicević, Gordana and Balaban, Milica and Stojanović, Zdenka and Antić, Vesna",
year = "2020",
abstract = "The aim of this work was to assume the amount of BPA that can migrate to food packed into the cans coated by epoxy-phenolic lacquer. The assumption was made by determining the amount of BPA which migrates from the inner can coating to different food simulants: 3% acetic acid, 10% ethanol, their mixture (3% acetic acid +10% ethanol), and 50% ethanol. The examined tinplate cans were made by the special requirements of the Serbian Armed Forces. Further, the effect of the sterilization process and the very initial time of storage (15-105 days), on the level of BPA in the canned meatballs in tomato sauce, which are in the regular use of the Serbian Armed Forces, was examined. The BPA content was determined by the high performance liquid chromatography-mass spectrometry (HPLC-MS), and compared with BPA content found in the food simulants.",
publisher = "Wiley, Hoboken",
journal = "Packaging Technology and Science",
title = "Migration of bisphenol a into food simulants and meat rations during initial time of storage",
pages = "82-75",
number = "2",
volume = "33",
doi = "10.1002/pts.2485"
}

Stojanović, B., Radović, L., Natić, D., Dodevska, M., Vrastanović-Pavicević, G., Balaban, M., Stojanović, Z.,& Antić, V.. (2020). Migration of bisphenol a into food simulants and meat rations during initial time of storage. in Packaging Technology and Science
Wiley, Hoboken., 33(2), 75-82.
https://doi.org/10.1002/pts.2485

Stojanović B, Radović L, Natić D, Dodevska M, Vrastanović-Pavicević G, Balaban M, Stojanović Z, Antić V. Migration of bisphenol a into food simulants and meat rations during initial time of storage. in Packaging Technology and Science. 2020;33(2):75-82.
doi:10.1002/pts.2485 .

Stojanović, Branislav, Radović, Ljubica, Natić, Dejan, Dodevska, Margarita, Vrastanović-Pavicević, Gordana, Balaban, Milica, Stojanović, Zdenka, Antić, Vesna, "Migration of bisphenol a into food simulants and meat rations during initial time of storage" in Packaging Technology and Science, 33, no. 2 (2020):75-82,
https://doi.org/10.1002/pts.2485 . .

TY  - JOUR
AU  - Stojanović, Branislav
AU  - Radović, Ljubica
AU  - Natić, Dejan
AU  - Dodevska, Margarita
AU  - Vrastanović-Pavicević, Gordana
AU  - Balaban, Milica
AU  - Lević, Steva
AU  - Petrović, Tanja
AU  - Antić, Vesna
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5031
AB  - The migration of bisphenol A (BPA) from epoxy-phenolic can coating into canned meat products, produced for the needs of the Serbian Armed Forces, was investigated in this work. The tinplate cans were made according to the special military demands, filled with the beef goulash or the meatballs in tomato sauce, and preserved by sterilization. The structure of internal can coating was analyzed by FTIR spectroscopy. The migration of BPA into content of the cans was investigated after storage under regular conditions in typical military facilities. The samples of beef goulash (BG) produced in 2010-2016, and the meatballs in tomato sauce (MB) produced in 2014-2017 were tested for the presence of BPA. Thereafter, the impact of storage temperature and degree of can damage on BPA migration was examined. Both meat products were thermostated on 20 and 40 degrees C, and BPA level was measured after 3, 6, 9 and 12 months of storage. The level of BPA was determined in the content of undamaged cans, and cans with lower and higher degree of damage. The BPA was extracted from food with acetonitrile and the extracts were purified by QuEChERS procedure. The level of BPA was determined by LC-MS.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Influence of a storage conditions on migration of bisphenol A from epoxy-phenolic coating to canned meat products
EP  - 389
IS  - 4
SP  - 377
VL  - 84
DO  - 10.2298/JSC181015100S
ER  - 

@article{
author = "Stojanović, Branislav and Radović, Ljubica and Natić, Dejan and Dodevska, Margarita and Vrastanović-Pavicević, Gordana and Balaban, Milica and Lević, Steva and Petrović, Tanja and Antić, Vesna",
year = "2019",
abstract = "The migration of bisphenol A (BPA) from epoxy-phenolic can coating into canned meat products, produced for the needs of the Serbian Armed Forces, was investigated in this work. The tinplate cans were made according to the special military demands, filled with the beef goulash or the meatballs in tomato sauce, and preserved by sterilization. The structure of internal can coating was analyzed by FTIR spectroscopy. The migration of BPA into content of the cans was investigated after storage under regular conditions in typical military facilities. The samples of beef goulash (BG) produced in 2010-2016, and the meatballs in tomato sauce (MB) produced in 2014-2017 were tested for the presence of BPA. Thereafter, the impact of storage temperature and degree of can damage on BPA migration was examined. Both meat products were thermostated on 20 and 40 degrees C, and BPA level was measured after 3, 6, 9 and 12 months of storage. The level of BPA was determined in the content of undamaged cans, and cans with lower and higher degree of damage. The BPA was extracted from food with acetonitrile and the extracts were purified by QuEChERS procedure. The level of BPA was determined by LC-MS.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Influence of a storage conditions on migration of bisphenol A from epoxy-phenolic coating to canned meat products",
pages = "389-377",
number = "4",
volume = "84",
doi = "10.2298/JSC181015100S"
}

Stojanović, B., Radović, L., Natić, D., Dodevska, M., Vrastanović-Pavicević, G., Balaban, M., Lević, S., Petrović, T.,& Antić, V.. (2019). Influence of a storage conditions on migration of bisphenol A from epoxy-phenolic coating to canned meat products. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 84(4), 377-389.
https://doi.org/10.2298/JSC181015100S

Stojanović B, Radović L, Natić D, Dodevska M, Vrastanović-Pavicević G, Balaban M, Lević S, Petrović T, Antić V. Influence of a storage conditions on migration of bisphenol A from epoxy-phenolic coating to canned meat products. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2019;84(4):377-389.
doi:10.2298/JSC181015100S .

Stojanović, Branislav, Radović, Ljubica, Natić, Dejan, Dodevska, Margarita, Vrastanović-Pavicević, Gordana, Balaban, Milica, Lević, Steva, Petrović, Tanja, Antić, Vesna, "Influence of a storage conditions on migration of bisphenol A from epoxy-phenolic coating to canned meat products" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 84, no. 4 (2019):377-389,
https://doi.org/10.2298/JSC181015100S . .

TY  - JOUR
AU  - Tasić, Aleksandra M.
AU  - Pergal, Marija V.
AU  - Antić, Mališa
AU  - Antić, Vesna
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4437
AB  - A series of alpha,omega-telechelic polydimethylsiloxanes (PDMS), with predetermined molecular weights of about 2500 g mol(-1), was synthesized by siloxane equilibration reaction. Syntheses were performed using octamethylcyclotetrasiloxane (D-4) and various disiloxanes: hexamethyldisiloxane (HMDS), 1,1,3,3-tetramethyldisiloxane (TMDS), 1,3-divinyltetramethyldisiloxane (DVTMDS), 1,3-bis(3-carboxypropyl) tetramethyldisiloxane (DCPTMDS) and 1,3-bis(3-aminopropyl) tetramethyldisiloxane (DAPTMDS). The role of the disiloxane was to introduce terminal functional groups at the end of the polymer chains and to control the molecular weight of the polymers. Polymers with trimethyl, hydrido, vinyl, carboxypropyl and aminopropyl end-groups were obtained in this way. The structure of the alpha,omega-telechelic PDMSs was confirmed by NMR and IR spectroscopy. The molecular weights of the polymers were determined by H-1-NMR, gel permeation chromatography (GPC) and dilute solution viscometry. Thermogravimetric analysis (TGA) under nitrogen and air showed that the type of the terminal groups significantly influenced the thermal and thermo-oxidative stability, as well as the degradation mechanism of the alpha,omega-telechelic PDMSs.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Synthesis, structure and thermogravimetric analysis of alpha,omega-telechelic polydimethylsiloxanes of low molecular weight
EP  - 1416
IS  - 12
SP  - 1395
VL  - 82
DO  - 10.2298/JSC170427082T
ER  - 

@article{
author = "Tasić, Aleksandra M. and Pergal, Marija V. and Antić, Mališa and Antić, Vesna",
year = "2017",
abstract = "A series of alpha,omega-telechelic polydimethylsiloxanes (PDMS), with predetermined molecular weights of about 2500 g mol(-1), was synthesized by siloxane equilibration reaction. Syntheses were performed using octamethylcyclotetrasiloxane (D-4) and various disiloxanes: hexamethyldisiloxane (HMDS), 1,1,3,3-tetramethyldisiloxane (TMDS), 1,3-divinyltetramethyldisiloxane (DVTMDS), 1,3-bis(3-carboxypropyl) tetramethyldisiloxane (DCPTMDS) and 1,3-bis(3-aminopropyl) tetramethyldisiloxane (DAPTMDS). The role of the disiloxane was to introduce terminal functional groups at the end of the polymer chains and to control the molecular weight of the polymers. Polymers with trimethyl, hydrido, vinyl, carboxypropyl and aminopropyl end-groups were obtained in this way. The structure of the alpha,omega-telechelic PDMSs was confirmed by NMR and IR spectroscopy. The molecular weights of the polymers were determined by H-1-NMR, gel permeation chromatography (GPC) and dilute solution viscometry. Thermogravimetric analysis (TGA) under nitrogen and air showed that the type of the terminal groups significantly influenced the thermal and thermo-oxidative stability, as well as the degradation mechanism of the alpha,omega-telechelic PDMSs.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Synthesis, structure and thermogravimetric analysis of alpha,omega-telechelic polydimethylsiloxanes of low molecular weight",
pages = "1416-1395",
number = "12",
volume = "82",
doi = "10.2298/JSC170427082T"
}

Tasić, A. M., Pergal, M. V., Antić, M.,& Antić, V.. (2017). Synthesis, structure and thermogravimetric analysis of alpha,omega-telechelic polydimethylsiloxanes of low molecular weight. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 82(12), 1395-1416.
https://doi.org/10.2298/JSC170427082T

Tasić AM, Pergal MV, Antić M, Antić V. Synthesis, structure and thermogravimetric analysis of alpha,omega-telechelic polydimethylsiloxanes of low molecular weight. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2017;82(12):1395-1416.
doi:10.2298/JSC170427082T .

Tasić, Aleksandra M., Pergal, Marija V., Antić, Mališa, Antić, Vesna, "Synthesis, structure and thermogravimetric analysis of alpha,omega-telechelic polydimethylsiloxanes of low molecular weight" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 82, no. 12 (2017):1395-1416,
https://doi.org/10.2298/JSC170427082T . .

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Rusmirović, Jelena D.
AU  - Marinković, Aleksandar
AU  - Antić, Vesna
AU  - Pavlović, Vladimir
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4324
AB  - In this study, porous macro- and micro-cellular wollastonite-based ceramics was synthesized. A ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as a starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, the sintering regime was set up. The prepared mixtures were pressed into pallets and sintered at 900 degrees C. During the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples, as well as the microstructures, were analyzed by using X-ray diffraction and SEM. A two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that the addition of different pore-forming agents resulted in significantly different microstructures. In a batch test, the influence of pH, the contact time and the initial ion concentration on the adsorption efficiency of As+5, Cr(+6)and phosphate ions on the synthesized adsorbents were studied. Time-dependent adsorption is best described by the pseudo-second-order kinetic model and the Weber-Morris model, which predict intra-particle diffusion as a rate-controlling step of the overall process. High adsorption capacities, 21.93, 23.88, and 27.29 mg g(-1), were obtained for the CaCO3-siloxane-nanocellulose sorbent, and similar/lower capacities were obtained for the CaCO3-siloxane-PMMA and CaCO3-siloxane-cotton wool adsorbents.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities
EP  - 7468
IS  - 10
SP  - 7461
VL  - 43
DO  - 10.1016/j.ceramint.2017.03.021
ER  - 

@article{
author = "Obradović, Nina and Filipović, Suzana and Marković, Smilja and Mitrić, Miodrag and Rusmirović, Jelena D. and Marinković, Aleksandar and Antić, Vesna and Pavlović, Vladimir",
year = "2017",
abstract = "In this study, porous macro- and micro-cellular wollastonite-based ceramics was synthesized. A ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as a starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, the sintering regime was set up. The prepared mixtures were pressed into pallets and sintered at 900 degrees C. During the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples, as well as the microstructures, were analyzed by using X-ray diffraction and SEM. A two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that the addition of different pore-forming agents resulted in significantly different microstructures. In a batch test, the influence of pH, the contact time and the initial ion concentration on the adsorption efficiency of As+5, Cr(+6)and phosphate ions on the synthesized adsorbents were studied. Time-dependent adsorption is best described by the pseudo-second-order kinetic model and the Weber-Morris model, which predict intra-particle diffusion as a rate-controlling step of the overall process. High adsorption capacities, 21.93, 23.88, and 27.29 mg g(-1), were obtained for the CaCO3-siloxane-nanocellulose sorbent, and similar/lower capacities were obtained for the CaCO3-siloxane-PMMA and CaCO3-siloxane-cotton wool adsorbents.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities",
pages = "7468-7461",
number = "10",
volume = "43",
doi = "10.1016/j.ceramint.2017.03.021"
}

Obradović, N., Filipović, S., Marković, S., Mitrić, M., Rusmirović, J. D., Marinković, A., Antić, V.,& Pavlović, V.. (2017). Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities. in Ceramics International
Elsevier Sci Ltd, Oxford., 43(10), 7461-7468.
https://doi.org/10.1016/j.ceramint.2017.03.021

Obradović N, Filipović S, Marković S, Mitrić M, Rusmirović JD, Marinković A, Antić V, Pavlović V. Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities. in Ceramics International. 2017;43(10):7461-7468.
doi:10.1016/j.ceramint.2017.03.021 .

Obradović, Nina, Filipović, Suzana, Marković, Smilja, Mitrić, Miodrag, Rusmirović, Jelena D., Marinković, Aleksandar, Antić, Vesna, Pavlović, Vladimir, "Influence of different pore-forming agents on wollastonite microstructures and adsorption capacities" in Ceramics International, 43, no. 10 (2017):7461-7468,
https://doi.org/10.1016/j.ceramint.2017.03.021 . .

TY  - CONF
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Antić, Vesna
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/874
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5714
AB  - In this study, highly porous macro- and micro-cellular wollastonite-based ceramics was synthesized. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 oC for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, sintering regime was set up. Prepared mixtures were pressed into pallets and sintered at 900 oC. During the sintering regime, highly porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by the means of X-ray diffraction method and SEM. Two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that addition of different pore-forming agent resulted in significantly different microstructures.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
T1  - Influence of different pore-forming agents on wollastonite microstructures
EP  - 42
SP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_dais_874
ER  - 

@conference{
author = "Obradović, Nina and Filipović, Suzana and Marković, Smilja and Mitrić, Miodrag and Antić, Vesna and Pavlović, Vladimir B.",
year = "2016",
abstract = "In this study, highly porous macro- and micro-cellular wollastonite-based ceramics was synthesized. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 oC for 30 min, different pore-forming agents were added to the as-obtained powders. Differential thermal analysis was used to determine characteristic temperatures of processes occurring within powders during heating. Based on the obtained results, sintering regime was set up. Prepared mixtures were pressed into pallets and sintered at 900 oC. During the sintering regime, highly porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by the means of X-ray diffraction method and SEM. Two-phase system was detected in all samples, CaSiO3 wollastonite and Ca2SiO4 larnite, and their ratio varied with each pore-forming agent. It was observed that addition of different pore-forming agent resulted in significantly different microstructures.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade",
title = "Influence of different pore-forming agents on wollastonite microstructures",
pages = "42-42",
url = "https://hdl.handle.net/21.15107/rcub_dais_874"
}

Obradović, N., Filipović, S., Marković, S., Mitrić, M., Antić, V.,& Pavlović, V. B.. (2016). Influence of different pore-forming agents on wollastonite microstructures. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
Belgrade : Serbian Ceramic Society., 42-42.
https://hdl.handle.net/21.15107/rcub_dais_874

Obradović N, Filipović S, Marković S, Mitrić M, Antić V, Pavlović VB. Influence of different pore-forming agents on wollastonite microstructures. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade. 2016;:42-42.
https://hdl.handle.net/21.15107/rcub_dais_874 .

Obradović, Nina, Filipović, Suzana, Marković, Smilja, Mitrić, Miodrag, Antić, Vesna, Pavlović, Vladimir B., "Influence of different pore-forming agents on wollastonite microstructures" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade (2016):42-42,
https://hdl.handle.net/21.15107/rcub_dais_874 .

TY  - JOUR
AU  - al Sandouk-Lincke, Nadia Anna
AU  - Schwarzbauer, Jan
AU  - Antić, Vesna
AU  - Antić, Mališa
AU  - Caase, Jana
AU  - Gruenelt, Sabrina
AU  - Ressing, Katharina
AU  - Littke, Ralf
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3686
AB  - Three different synthetic polymers commonly used in drilling fluids (carboxymethyl cellulose - CMC, hydroxyethyl cellulose - HEC and polyacrylamide - PAA) were analysed by off-line-pyrolysis-gas chromatography-mass spectrometry (off-line-Py-GC-MS). The aim of this study was to determine specific environmental marker compounds for the identification of contamination due to drilling activities. In a first step, reference materials of the main constituents of commonly applied water-based drilling fluids were purchased and analysed to identify potential indicator substances. For each polymer a set of two to three specific pyrolysis products was determined. Afterwards, four CMC, one HEC and two PAA based drilling fluids were pyrolysed in order to retrieve the previously identified compounds in drilling fluid mixtures. All indicator compounds were identified. In a third step, spiking experiments on drill cutting samples of various depths of one well proved the traceability of the applied polymers and verified the applicability of the indicator systems in terms of sensitivity and specificity.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Organic Geochemistry
T1  - Off-line-pyrolysis-gas chromatography-mass spectrometry analyses of drilling fluids and drill cuttings - Identification of potential environmental marker substances
EP  - 28
SP  - 17
VL  - 88
DO  - 10.1016/j.orggeochem.2015.08.001
ER  - 

@article{
author = "al Sandouk-Lincke, Nadia Anna and Schwarzbauer, Jan and Antić, Vesna and Antić, Mališa and Caase, Jana and Gruenelt, Sabrina and Ressing, Katharina and Littke, Ralf",
year = "2015",
abstract = "Three different synthetic polymers commonly used in drilling fluids (carboxymethyl cellulose - CMC, hydroxyethyl cellulose - HEC and polyacrylamide - PAA) were analysed by off-line-pyrolysis-gas chromatography-mass spectrometry (off-line-Py-GC-MS). The aim of this study was to determine specific environmental marker compounds for the identification of contamination due to drilling activities. In a first step, reference materials of the main constituents of commonly applied water-based drilling fluids were purchased and analysed to identify potential indicator substances. For each polymer a set of two to three specific pyrolysis products was determined. Afterwards, four CMC, one HEC and two PAA based drilling fluids were pyrolysed in order to retrieve the previously identified compounds in drilling fluid mixtures. All indicator compounds were identified. In a third step, spiking experiments on drill cutting samples of various depths of one well proved the traceability of the applied polymers and verified the applicability of the indicator systems in terms of sensitivity and specificity.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Organic Geochemistry",
title = "Off-line-pyrolysis-gas chromatography-mass spectrometry analyses of drilling fluids and drill cuttings - Identification of potential environmental marker substances",
pages = "28-17",
volume = "88",
doi = "10.1016/j.orggeochem.2015.08.001"
}

al Sandouk-Lincke, N. A., Schwarzbauer, J., Antić, V., Antić, M., Caase, J., Gruenelt, S., Ressing, K.,& Littke, R.. (2015). Off-line-pyrolysis-gas chromatography-mass spectrometry analyses of drilling fluids and drill cuttings - Identification of potential environmental marker substances. in Organic Geochemistry
Pergamon-Elsevier Science Ltd, Oxford., 88, 17-28.
https://doi.org/10.1016/j.orggeochem.2015.08.001

al Sandouk-Lincke NA, Schwarzbauer J, Antić V, Antić M, Caase J, Gruenelt S, Ressing K, Littke R. Off-line-pyrolysis-gas chromatography-mass spectrometry analyses of drilling fluids and drill cuttings - Identification of potential environmental marker substances. in Organic Geochemistry. 2015;88:17-28.
doi:10.1016/j.orggeochem.2015.08.001 .

al Sandouk-Lincke, Nadia Anna, Schwarzbauer, Jan, Antić, Vesna, Antić, Mališa, Caase, Jana, Gruenelt, Sabrina, Ressing, Katharina, Littke, Ralf, "Off-line-pyrolysis-gas chromatography-mass spectrometry analyses of drilling fluids and drill cuttings - Identification of potential environmental marker substances" in Organic Geochemistry, 88 (2015):17-28,
https://doi.org/10.1016/j.orggeochem.2015.08.001 . .

TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Djonlagić, Jasna
AU  - Tovilović, Gordana
AU  - Nestorov, Jelena
AU  - Antić, Vesna
AU  - Ostojić, Sanja
AU  - Pergal, Marija V.
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3799
AB  - Polyurethane copolymers based on ,-dihydroxypropyl poly(dimethylsiloxane) (PDMS) with a range of soft segment contents were prepared by two-stage polymerization, and their microstructures, thermal, thermomechanical, and surface properties, as well as in vitro hemo- and cytocompatibility were evaluated. All utilized characterization methods confirmed the existence of moderately microphase separated structures with the appearance of some microphase mixing between segments as the PDMS (i.e., soft segment) content increased. Copolymers showed higher crystallinity, storage moduli, surface roughness, and surface free energy, but less hydrophobicity with decreasing PDMS content. Biocompatibility of copolymers was evaluated using an endothelial EA.hy926 cell line by direct contact, an extraction method and after pretreatment of copolymers with multicomponent protein mixture, as well as by a competitive protein adsorption assay. Copolymers showed no toxic effect to endothelial cells and all copolymers, except that with the lowest PDMS content, exhibited resistance to endothelial cell adhesion, suggesting their unsuitability for long-term biomedical devices which particularly require re-endothelialization. All copolymers exhibited excellent resistance to fibrinogen adsorption and adsorbed more albumin than fibrinogen in the competitive adsorption assay, suggesting their good hemocompatibility. The noncytotoxic chemistry of these synthesized materials, combined with their nonadherent properties which are inhospitable to cell attachment and growth, underlie the need for further investigations to clarify their potential for use in short-term biomedical devices.
PB  - Wiley-Blackwell, Hoboken
T2  - Journal of Biomedical Materials Research Part A
T1  - Poly(urethane-dimethylsiloxane) copolymers displaying a range of soft segment contents, noncytotoxic chemistry, and nonadherent properties toward endothelial cells
EP  - 1475
IS  - 4
SP  - 1459
VL  - 103
DO  - 10.1002/jbm.a.35285
ER  - 

@article{
author = "Stefanović, Ivan S. and Djonlagić, Jasna and Tovilović, Gordana and Nestorov, Jelena and Antić, Vesna and Ostojić, Sanja and Pergal, Marija V.",
year = "2015",
abstract = "Polyurethane copolymers based on ,-dihydroxypropyl poly(dimethylsiloxane) (PDMS) with a range of soft segment contents were prepared by two-stage polymerization, and their microstructures, thermal, thermomechanical, and surface properties, as well as in vitro hemo- and cytocompatibility were evaluated. All utilized characterization methods confirmed the existence of moderately microphase separated structures with the appearance of some microphase mixing between segments as the PDMS (i.e., soft segment) content increased. Copolymers showed higher crystallinity, storage moduli, surface roughness, and surface free energy, but less hydrophobicity with decreasing PDMS content. Biocompatibility of copolymers was evaluated using an endothelial EA.hy926 cell line by direct contact, an extraction method and after pretreatment of copolymers with multicomponent protein mixture, as well as by a competitive protein adsorption assay. Copolymers showed no toxic effect to endothelial cells and all copolymers, except that with the lowest PDMS content, exhibited resistance to endothelial cell adhesion, suggesting their unsuitability for long-term biomedical devices which particularly require re-endothelialization. All copolymers exhibited excellent resistance to fibrinogen adsorption and adsorbed more albumin than fibrinogen in the competitive adsorption assay, suggesting their good hemocompatibility. The noncytotoxic chemistry of these synthesized materials, combined with their nonadherent properties which are inhospitable to cell attachment and growth, underlie the need for further investigations to clarify their potential for use in short-term biomedical devices.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Journal of Biomedical Materials Research Part A",
title = "Poly(urethane-dimethylsiloxane) copolymers displaying a range of soft segment contents, noncytotoxic chemistry, and nonadherent properties toward endothelial cells",
pages = "1475-1459",
number = "4",
volume = "103",
doi = "10.1002/jbm.a.35285"
}

Stefanović, I. S., Djonlagić, J., Tovilović, G., Nestorov, J., Antić, V., Ostojić, S.,& Pergal, M. V.. (2015). Poly(urethane-dimethylsiloxane) copolymers displaying a range of soft segment contents, noncytotoxic chemistry, and nonadherent properties toward endothelial cells. in Journal of Biomedical Materials Research Part A
Wiley-Blackwell, Hoboken., 103(4), 1459-1475.
https://doi.org/10.1002/jbm.a.35285

Stefanović IS, Djonlagić J, Tovilović G, Nestorov J, Antić V, Ostojić S, Pergal MV. Poly(urethane-dimethylsiloxane) copolymers displaying a range of soft segment contents, noncytotoxic chemistry, and nonadherent properties toward endothelial cells. in Journal of Biomedical Materials Research Part A. 2015;103(4):1459-1475.
doi:10.1002/jbm.a.35285 .

Stefanović, Ivan S., Djonlagić, Jasna, Tovilović, Gordana, Nestorov, Jelena, Antić, Vesna, Ostojić, Sanja, Pergal, Marija V., "Poly(urethane-dimethylsiloxane) copolymers displaying a range of soft segment contents, noncytotoxic chemistry, and nonadherent properties toward endothelial cells" in Journal of Biomedical Materials Research Part A, 103, no. 4 (2015):1459-1475,
https://doi.org/10.1002/jbm.a.35285 . .

TY  - JOUR
AU  - Pergal, Marija V.
AU  - Stefanović, Ivan S.
AU  - Godjevac, Dejan
AU  - Antić, Vesna
AU  - Milacić, Vesna
AU  - Ostojić, Sanja
AU  - Rogan, Jelena
AU  - Djonlagić, Jasna
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3399
AB  - In this study, the synthesis, structure and physical properties of two series of thermoplastic polyurethanes based on hydroxypropyl-terminated poly(dimethylsiloxane) (HP-PDMS) or hydroxyethoxypropyl-terminated poly(dimethylsiloxane) (EO-PDMS) as soft segments, and 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol as hard segments were investigated. The polyurethanes were synthesized by two-step polyaddition in solution. The effects of the type and content of PDMS segments on the structure, thermal and surface properties of copolymers were studied by H-1-, C-13-nuclear magnetic resonance (NMR) spectroscopy and two-dimensional NMR spectroscopies (heteronuclear multiple bond correlation (HMBC) and rotating-frame nuclear Overhauser effect (ROESY)), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), wide-angle X-ray scattering (WAXS), scanning electron microscopy (SEM) and water contact angle and water absorption measurements. Thermal properties investigated by DSC indicated that the presence of soft PDMS segments lowers the glass transition and melting temperatures of the hard phase as well as the degree of crystallinity. SEM analysis of the copolymers with a lower soft segment content confirmed the presence of spherulite superstructures, which arise from the crystallization of the hard segments. When compared with polyurethanes prepared from HP-PDMS, the copolymers synthesized from EO-PDMS with the same content of the soft segments had a higher degree of crystallinity, better thermal stability and a less hydrophobic surface. The obtained results showed that the synthesized polyurethanes had good thermal and surface properties, which could be further modified by changing the type or content of the soft segments.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane)
EP  - +
IS  - 7
SP  - 843
VL  - 79
DO  - 10.2298/JSC130819149P
ER  - 

@article{
author = "Pergal, Marija V. and Stefanović, Ivan S. and Godjevac, Dejan and Antić, Vesna and Milacić, Vesna and Ostojić, Sanja and Rogan, Jelena and Djonlagić, Jasna",
year = "2014",
abstract = "In this study, the synthesis, structure and physical properties of two series of thermoplastic polyurethanes based on hydroxypropyl-terminated poly(dimethylsiloxane) (HP-PDMS) or hydroxyethoxypropyl-terminated poly(dimethylsiloxane) (EO-PDMS) as soft segments, and 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol as hard segments were investigated. The polyurethanes were synthesized by two-step polyaddition in solution. The effects of the type and content of PDMS segments on the structure, thermal and surface properties of copolymers were studied by H-1-, C-13-nuclear magnetic resonance (NMR) spectroscopy and two-dimensional NMR spectroscopies (heteronuclear multiple bond correlation (HMBC) and rotating-frame nuclear Overhauser effect (ROESY)), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), wide-angle X-ray scattering (WAXS), scanning electron microscopy (SEM) and water contact angle and water absorption measurements. Thermal properties investigated by DSC indicated that the presence of soft PDMS segments lowers the glass transition and melting temperatures of the hard phase as well as the degree of crystallinity. SEM analysis of the copolymers with a lower soft segment content confirmed the presence of spherulite superstructures, which arise from the crystallization of the hard segments. When compared with polyurethanes prepared from HP-PDMS, the copolymers synthesized from EO-PDMS with the same content of the soft segments had a higher degree of crystallinity, better thermal stability and a less hydrophobic surface. The obtained results showed that the synthesized polyurethanes had good thermal and surface properties, which could be further modified by changing the type or content of the soft segments.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane)",
pages = "+-843",
number = "7",
volume = "79",
doi = "10.2298/JSC130819149P"
}

Pergal, M. V., Stefanović, I. S., Godjevac, D., Antić, V., Milacić, V., Ostojić, S., Rogan, J.,& Djonlagić, J.. (2014). Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane). in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 79(7), 843-+.
https://doi.org/10.2298/JSC130819149P

Pergal MV, Stefanović IS, Godjevac D, Antić V, Milacić V, Ostojić S, Rogan J, Djonlagić J. Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane). in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2014;79(7):843-+.
doi:10.2298/JSC130819149P .

Pergal, Marija V., Stefanović, Ivan S., Godjevac, Dejan, Antić, Vesna, Milacić, Vesna, Ostojić, Sanja, Rogan, Jelena, Djonlagić, Jasna, "Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane)" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 79, no. 7 (2014):843-+,
https://doi.org/10.2298/JSC130819149P . .

TY  - JOUR
AU  - Malicanin, Marko
AU  - Rac, Vladislav
AU  - Antić, Vesna
AU  - Antić, Mališa
AU  - Palade, Laurentiu Mihai
AU  - Kefalas, Panagiotis
AU  - Rakić, Vesna
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3444
AB  - The goal of this work was to investigate the relationship between antioxidants' content and the oxidative stabilities of grape seed oils obtained from the Cabernet Sauvignon variety. The samples of grape seed oils were obtained by ultrasound assisted extraction. The time of extraction was varied, while the other relevant parameters: extraction temperature, solvent to solid ratio and sonication power were kept constant. For the sake of comparison, the extraction was also done using the conventional Soxhlet method. For all the oil samples obtained, the contents of total phenolic compounds (TPC), alpha-tocopherol and fatty acids were determined using relevant analytic methods. Importantly, in the present study, the modern analytical techniques for estimation of antioxidant capacity (measuring the chemiluminescence intensity of a luminol-hemin solution) and oxidative stability [differential scanning calorimetry (DSC), coupled with thermogravimetry (TG)] were proposed. The obtained results prove that ultrasonic irradiation enables effective extraction of grape seed oil. It was shown that the extractive yields and the amounts of total phenolic compounds and alpha-tocopherol increase with time of extraction; the optimum time was determined. Results obtained in this work show that, for both oxidative stability and antioxidant capacity, TPC have a more important role then alpha-tocopherol.
PB  - Wiley, Hoboken
T2  - Journal of the American Oil Chemists Society
T1  - Content of Antioxidants, Antioxidant Capacity and Oxidative Stability of Grape Seed Oil Obtained by Ultra Sound Assisted Extraction
EP  - 999
IS  - 6
SP  - 989
VL  - 91
DO  - 10.1007/s11746-014-2441-2
ER  - 

@article{
author = "Malicanin, Marko and Rac, Vladislav and Antić, Vesna and Antić, Mališa and Palade, Laurentiu Mihai and Kefalas, Panagiotis and Rakić, Vesna",
year = "2014",
abstract = "The goal of this work was to investigate the relationship between antioxidants' content and the oxidative stabilities of grape seed oils obtained from the Cabernet Sauvignon variety. The samples of grape seed oils were obtained by ultrasound assisted extraction. The time of extraction was varied, while the other relevant parameters: extraction temperature, solvent to solid ratio and sonication power were kept constant. For the sake of comparison, the extraction was also done using the conventional Soxhlet method. For all the oil samples obtained, the contents of total phenolic compounds (TPC), alpha-tocopherol and fatty acids were determined using relevant analytic methods. Importantly, in the present study, the modern analytical techniques for estimation of antioxidant capacity (measuring the chemiluminescence intensity of a luminol-hemin solution) and oxidative stability [differential scanning calorimetry (DSC), coupled with thermogravimetry (TG)] were proposed. The obtained results prove that ultrasonic irradiation enables effective extraction of grape seed oil. It was shown that the extractive yields and the amounts of total phenolic compounds and alpha-tocopherol increase with time of extraction; the optimum time was determined. Results obtained in this work show that, for both oxidative stability and antioxidant capacity, TPC have a more important role then alpha-tocopherol.",
publisher = "Wiley, Hoboken",
journal = "Journal of the American Oil Chemists Society",
title = "Content of Antioxidants, Antioxidant Capacity and Oxidative Stability of Grape Seed Oil Obtained by Ultra Sound Assisted Extraction",
pages = "999-989",
number = "6",
volume = "91",
doi = "10.1007/s11746-014-2441-2"
}

Malicanin, M., Rac, V., Antić, V., Antić, M., Palade, L. M., Kefalas, P.,& Rakić, V.. (2014). Content of Antioxidants, Antioxidant Capacity and Oxidative Stability of Grape Seed Oil Obtained by Ultra Sound Assisted Extraction. in Journal of the American Oil Chemists Society
Wiley, Hoboken., 91(6), 989-999.
https://doi.org/10.1007/s11746-014-2441-2

Malicanin M, Rac V, Antić V, Antić M, Palade LM, Kefalas P, Rakić V. Content of Antioxidants, Antioxidant Capacity and Oxidative Stability of Grape Seed Oil Obtained by Ultra Sound Assisted Extraction. in Journal of the American Oil Chemists Society. 2014;91(6):989-999.
doi:10.1007/s11746-014-2441-2 .

Malicanin, Marko, Rac, Vladislav, Antić, Vesna, Antić, Mališa, Palade, Laurentiu Mihai, Kefalas, Panagiotis, Rakić, Vesna, "Content of Antioxidants, Antioxidant Capacity and Oxidative Stability of Grape Seed Oil Obtained by Ultra Sound Assisted Extraction" in Journal of the American Oil Chemists Society, 91, no. 6 (2014):989-999,
https://doi.org/10.1007/s11746-014-2441-2 . .

TY  - JOUR
AU  - Balaban, Milica
AU  - Antić, Vesna
AU  - Pergal, Marija V.
AU  - Godjevac, Dejan
AU  - Francolini, Iolanda
AU  - Martinelli, Andrea
AU  - Rogan, Jelena
AU  - Djonlagić, Jasna
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3294
AB  - Segmented poly(urethane-urea-siloxane)s (PUUS) were synthesized using 4,4'-methylenediphenyl diisocyanate (MDI) and ethylene diamine (ED) as the hard segment components and hydroxypropyl-terminated poly(dimethylsiloxane) (PDMS) as the soft segment component, where the hard segment content ranged from 38 to 65 wt%. Segmented PUUSs were prepared by a two-step polymerization procedure in tetrahydrofuran/N-methylpyrrolidone (THF/NMP) mixture with a large proportion of polar solvent. The structure, composition and hard segment length were determined by C-13 NMR and two-dimensional correlation spectroscopy. Thermal, mechanical, small-angle X-ray scattering and hydrogen bonding analyses indicated the formation of the microphase-separated copolymers with high tensile strength. Globular superstructures observed in the copolymer films by scanning electron microscopy (SEM) and atomic force microscopy (AFM) were probably arisen from the microstructural organization of the MDI-ED segments, depending on their content and length. The PUUS copolymers showed high water resistance and became more hydrophobic with increasing weight fraction of PDMS.
PB  - Springer, New York
T2  - Polymer Bulletin
T1  - Influence of the chemical structure of poly(urea-urethane-siloxane)s on their morphological, surface and thermal properties
EP  - 2518
IS  - 9
SP  - 2493
VL  - 70
DO  - 10.1007/s00289-013-0968-2
ER  - 

@article{
author = "Balaban, Milica and Antić, Vesna and Pergal, Marija V. and Godjevac, Dejan and Francolini, Iolanda and Martinelli, Andrea and Rogan, Jelena and Djonlagić, Jasna",
year = "2013",
abstract = "Segmented poly(urethane-urea-siloxane)s (PUUS) were synthesized using 4,4'-methylenediphenyl diisocyanate (MDI) and ethylene diamine (ED) as the hard segment components and hydroxypropyl-terminated poly(dimethylsiloxane) (PDMS) as the soft segment component, where the hard segment content ranged from 38 to 65 wt%. Segmented PUUSs were prepared by a two-step polymerization procedure in tetrahydrofuran/N-methylpyrrolidone (THF/NMP) mixture with a large proportion of polar solvent. The structure, composition and hard segment length were determined by C-13 NMR and two-dimensional correlation spectroscopy. Thermal, mechanical, small-angle X-ray scattering and hydrogen bonding analyses indicated the formation of the microphase-separated copolymers with high tensile strength. Globular superstructures observed in the copolymer films by scanning electron microscopy (SEM) and atomic force microscopy (AFM) were probably arisen from the microstructural organization of the MDI-ED segments, depending on their content and length. The PUUS copolymers showed high water resistance and became more hydrophobic with increasing weight fraction of PDMS.",
publisher = "Springer, New York",
journal = "Polymer Bulletin",
title = "Influence of the chemical structure of poly(urea-urethane-siloxane)s on their morphological, surface and thermal properties",
pages = "2518-2493",
number = "9",
volume = "70",
doi = "10.1007/s00289-013-0968-2"
}

Balaban, M., Antić, V., Pergal, M. V., Godjevac, D., Francolini, I., Martinelli, A., Rogan, J.,& Djonlagić, J.. (2013). Influence of the chemical structure of poly(urea-urethane-siloxane)s on their morphological, surface and thermal properties. in Polymer Bulletin
Springer, New York., 70(9), 2493-2518.
https://doi.org/10.1007/s00289-013-0968-2

Balaban M, Antić V, Pergal MV, Godjevac D, Francolini I, Martinelli A, Rogan J, Djonlagić J. Influence of the chemical structure of poly(urea-urethane-siloxane)s on their morphological, surface and thermal properties. in Polymer Bulletin. 2013;70(9):2493-2518.
doi:10.1007/s00289-013-0968-2 .

Balaban, Milica, Antić, Vesna, Pergal, Marija V., Godjevac, Dejan, Francolini, Iolanda, Martinelli, Andrea, Rogan, Jelena, Djonlagić, Jasna, "Influence of the chemical structure of poly(urea-urethane-siloxane)s on their morphological, surface and thermal properties" in Polymer Bulletin, 70, no. 9 (2013):2493-2518,
https://doi.org/10.1007/s00289-013-0968-2 . .

TY  - JOUR
AU  - Antić, Vesna
AU  - Antić, Mališa
AU  - Kronimus, Alexander
AU  - Schwarzbauer, Jan
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2920
AB  - 'On-line' pyrolysis coupled with gas chromatography (GC) was performed for quantitative determination of poly(vinylpyrrolidone) (PVP) in wastewater sample. Gas chromatography-mass spectrometry (GC-MS) showed that the main product of pyrolysis of PVP, at high temperatures, was N-vinylpyrrolidone (NVP). After that, different amounts of commercial PVP were pyrolyzed in order to establish the correlation between the amount of generated NVP (its GC peak area) and the initial mass of pyrolyzed PVP. GC-FID analysis was used for construction of the calibration curve and for quantitative determination of PVP. Very good linear correlation was obtained between the area of NVP peak, generated during pyrolysis, and the initial mass of PVP (r2 = 0.998). Further, solutions of known concentration of PVP were prepared in destilled water ('spiked samples'). Spiked samples were preextracted with diethyl ether and n-hexane, after which the water-layer was evaporated and dissolved again in methanol. Analysis of pyrolysates of preextracted spiked samples showed that the 'recovery' of PVP was above 96 mass%. This finding suggested that pre-extraction could be applied to reduce the concentration of organic substances that could also be pyrolyzed, and thus hinder identification and quantitative determination of PVP, without significant loss of polymer. The sample of an industrial wastewater from Pančevo, Serbia was investigated in the last part of this work. The sample was preextracted in the same way as the spiked samples and than pyrolyzed. NVP was identified by GC-MS in obtained pyrolysate, which was the evidence that PVP was present in the wastewater sample. NVP was quantified on the basis of the peak area in GC-FID chromatogram, and than the concentration of PVP in wastewater sample was calculated based on calibration curve. Concentration of PVP in industrial wastewater amounted 2.5 mg/L.
AB  - U ovom radu je primenjena metoda 'on-line' pirolize u sprezi sa gasnom hromatografijom (GC) za kvantitativno određivanje poli(vinilpirolidona) (PVP) u uzorku otpadne vode. Najpre je gasnomhromatografsko-masenospektrometrijskom analizom (GC-MS) utvrđeno da pirolizom PVP na visokim temperaturama kao glavni proizvod degradacije nastaje monomer, N-vinilpirolidon (NVP). Nakon toga su različite količine komercijalnog PVP pirolizovane da bi se uspostavila korelacija između količine nastalog NVP i inicijalne mase pirolizovanog polimera. Za konstruisanje kalibracione krive i kvantitativno određivanje PVP u rastvorima poznate koncentracije u destilovanoj vodi ('spiked samples'), kao i u uzorku otpadne vode, korišćena je GC analiza. Analizom rastvora komercijalnog PVP poznate koncentracije ustanovljeno je da PVP 'recovery', nakon ekstrakcije n-heksanom i dietil-etrom, iznosi iznad 96 mas.%. U poslednjem delu rada ispitan je uzorak industrijske otpadne vode iz Pančeva, Srbija. Pokazano je da je PVP bio prisutan u otpadnoj vodi i da je njegova koncentracija bila daleko iznad uobičajenih koncentracija niskomolekularnih organskih zagađivača.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography
T1  - Kvantitativno određivanje poli(vinilpirolidona) primenom 'On-line' pirolize kuplovane sa gasnom hromatografijom
EP  - 364
IS  - 3
SP  - 357
VL  - 66
DO  - 10.2298/HEMIND111114108A
ER  - 

@article{
author = "Antić, Vesna and Antić, Mališa and Kronimus, Alexander and Schwarzbauer, Jan",
year = "2012",
abstract = "'On-line' pyrolysis coupled with gas chromatography (GC) was performed for quantitative determination of poly(vinylpyrrolidone) (PVP) in wastewater sample. Gas chromatography-mass spectrometry (GC-MS) showed that the main product of pyrolysis of PVP, at high temperatures, was N-vinylpyrrolidone (NVP). After that, different amounts of commercial PVP were pyrolyzed in order to establish the correlation between the amount of generated NVP (its GC peak area) and the initial mass of pyrolyzed PVP. GC-FID analysis was used for construction of the calibration curve and for quantitative determination of PVP. Very good linear correlation was obtained between the area of NVP peak, generated during pyrolysis, and the initial mass of PVP (r2 = 0.998). Further, solutions of known concentration of PVP were prepared in destilled water ('spiked samples'). Spiked samples were preextracted with diethyl ether and n-hexane, after which the water-layer was evaporated and dissolved again in methanol. Analysis of pyrolysates of preextracted spiked samples showed that the 'recovery' of PVP was above 96 mass%. This finding suggested that pre-extraction could be applied to reduce the concentration of organic substances that could also be pyrolyzed, and thus hinder identification and quantitative determination of PVP, without significant loss of polymer. The sample of an industrial wastewater from Pančevo, Serbia was investigated in the last part of this work. The sample was preextracted in the same way as the spiked samples and than pyrolyzed. NVP was identified by GC-MS in obtained pyrolysate, which was the evidence that PVP was present in the wastewater sample. NVP was quantified on the basis of the peak area in GC-FID chromatogram, and than the concentration of PVP in wastewater sample was calculated based on calibration curve. Concentration of PVP in industrial wastewater amounted 2.5 mg/L., U ovom radu je primenjena metoda 'on-line' pirolize u sprezi sa gasnom hromatografijom (GC) za kvantitativno određivanje poli(vinilpirolidona) (PVP) u uzorku otpadne vode. Najpre je gasnomhromatografsko-masenospektrometrijskom analizom (GC-MS) utvrđeno da pirolizom PVP na visokim temperaturama kao glavni proizvod degradacije nastaje monomer, N-vinilpirolidon (NVP). Nakon toga su različite količine komercijalnog PVP pirolizovane da bi se uspostavila korelacija između količine nastalog NVP i inicijalne mase pirolizovanog polimera. Za konstruisanje kalibracione krive i kvantitativno određivanje PVP u rastvorima poznate koncentracije u destilovanoj vodi ('spiked samples'), kao i u uzorku otpadne vode, korišćena je GC analiza. Analizom rastvora komercijalnog PVP poznate koncentracije ustanovljeno je da PVP 'recovery', nakon ekstrakcije n-heksanom i dietil-etrom, iznosi iznad 96 mas.%. U poslednjem delu rada ispitan je uzorak industrijske otpadne vode iz Pančeva, Srbija. Pokazano je da je PVP bio prisutan u otpadnoj vodi i da je njegova koncentracija bila daleko iznad uobičajenih koncentracija niskomolekularnih organskih zagađivača.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography, Kvantitativno određivanje poli(vinilpirolidona) primenom 'On-line' pirolize kuplovane sa gasnom hromatografijom",
pages = "364-357",
number = "3",
volume = "66",
doi = "10.2298/HEMIND111114108A"
}

Antić, V., Antić, M., Kronimus, A.,& Schwarzbauer, J.. (2012). Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 66(3), 357-364.
https://doi.org/10.2298/HEMIND111114108A

Antić V, Antić M, Kronimus A, Schwarzbauer J. Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography. in Hemijska industrija. 2012;66(3):357-364.
doi:10.2298/HEMIND111114108A .

Antić, Vesna, Antić, Mališa, Kronimus, Alexander, Schwarzbauer, Jan, "Quantitative determination of poly(vinylpyrrolidone) by 'On-line' pyrolysis coupled with gas chromatography" in Hemijska industrija, 66, no. 3 (2012):357-364,
https://doi.org/10.2298/HEMIND111114108A . .

TY  - JOUR
AU  - Pergal, Marija V.
AU  - Antić, Vesna
AU  - Tovilović, Gordana
AU  - Nestorov, Jelena
AU  - Vasiljević-Radović, Dana
AU  - Djonlagić, Jasna
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2954
AB  - Novel polyurethane co-polymers (TPUs), based on poly(epsilon-caprolactone)-block-poly(dimethylsiloxane)-block-poly(epsilon-caprolactone) (PCL-PDMS-PCL) as soft segment and 4,4'-methylenediphenyl diisocyanate (MDI) and 1,4-butanediol (BD) as hard segment, were synthesized and evaluated for biomedical applications. The content of hard segments (HS) in the polymer chains was varied from 9 to 63 wt%. The influence of the content and length of the HS on the thermal, surface, mechanical properties and biocompatibility was investigated. The structure, composition and HS length were examined using H-1- and quantitative C-13-NMR spectroscopy. DSC results implied that the synthesized TPUs were semicrystalline polymers in which both the hard MDI/BD and soft PCL-PDMS-PCL segments participated. It was found that an increase in the average HS length (from 1.2 to 14.4 MDI/BD units) was accompanied by an increase in the crystallinity of the hard segments, storage moduli, hydrophilicity and degree of microphase separation of the co-polymers. Depending on the HS content, a gradual variation in surface properties of co-polymers was revealed by FTIR, AFM and static water contact angle measurements. The in vitro biocompatibility of co-polymers was evaluated using the endothelial EA. hy926 cell line and protein adsorption on the polyurethane films. All synthesized TPUs adsorbed more albumin than fibrinogen from multicomponent protein mixture, which may indicate biocompatibility. The polyurethane films with high HS content and/or high roughness coefficient exhibit good surface properties and biocompatible behavior, which was confirmed by non-toxic effects to cells and good cell adhesion. Therefore, the non-cytotoxic chemistry of the co-polymers makes them good candidates for further development as biomedical implants.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Biomaterials Science-Polymer Edition
T1  - In Vitro Biocompatibility Evaluation of Novel Urethane-Siloxane Co-Polymers Based on Poly(epsilon-Caprolactone)-block-Poly(Dimethylsiloxane)-block-Poly(epsilon-Caprolactone)
EP  - 1657
IS  - 13
SP  - 1629
VL  - 23
DO  - 10.1163/092050611X589338
ER  - 

@article{
author = "Pergal, Marija V. and Antić, Vesna and Tovilović, Gordana and Nestorov, Jelena and Vasiljević-Radović, Dana and Djonlagić, Jasna",
year = "2012",
abstract = "Novel polyurethane co-polymers (TPUs), based on poly(epsilon-caprolactone)-block-poly(dimethylsiloxane)-block-poly(epsilon-caprolactone) (PCL-PDMS-PCL) as soft segment and 4,4'-methylenediphenyl diisocyanate (MDI) and 1,4-butanediol (BD) as hard segment, were synthesized and evaluated for biomedical applications. The content of hard segments (HS) in the polymer chains was varied from 9 to 63 wt%. The influence of the content and length of the HS on the thermal, surface, mechanical properties and biocompatibility was investigated. The structure, composition and HS length were examined using H-1- and quantitative C-13-NMR spectroscopy. DSC results implied that the synthesized TPUs were semicrystalline polymers in which both the hard MDI/BD and soft PCL-PDMS-PCL segments participated. It was found that an increase in the average HS length (from 1.2 to 14.4 MDI/BD units) was accompanied by an increase in the crystallinity of the hard segments, storage moduli, hydrophilicity and degree of microphase separation of the co-polymers. Depending on the HS content, a gradual variation in surface properties of co-polymers was revealed by FTIR, AFM and static water contact angle measurements. The in vitro biocompatibility of co-polymers was evaluated using the endothelial EA. hy926 cell line and protein adsorption on the polyurethane films. All synthesized TPUs adsorbed more albumin than fibrinogen from multicomponent protein mixture, which may indicate biocompatibility. The polyurethane films with high HS content and/or high roughness coefficient exhibit good surface properties and biocompatible behavior, which was confirmed by non-toxic effects to cells and good cell adhesion. Therefore, the non-cytotoxic chemistry of the co-polymers makes them good candidates for further development as biomedical implants.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Biomaterials Science-Polymer Edition",
title = "In Vitro Biocompatibility Evaluation of Novel Urethane-Siloxane Co-Polymers Based on Poly(epsilon-Caprolactone)-block-Poly(Dimethylsiloxane)-block-Poly(epsilon-Caprolactone)",
pages = "1657-1629",
number = "13",
volume = "23",
doi = "10.1163/092050611X589338"
}

Pergal, M. V., Antić, V., Tovilović, G., Nestorov, J., Vasiljević-Radović, D.,& Djonlagić, J.. (2012). In Vitro Biocompatibility Evaluation of Novel Urethane-Siloxane Co-Polymers Based on Poly(epsilon-Caprolactone)-block-Poly(Dimethylsiloxane)-block-Poly(epsilon-Caprolactone). in Journal of Biomaterials Science-Polymer Edition
Taylor & Francis Ltd, Abingdon., 23(13), 1629-1657.
https://doi.org/10.1163/092050611X589338

Pergal MV, Antić V, Tovilović G, Nestorov J, Vasiljević-Radović D, Djonlagić J. In Vitro Biocompatibility Evaluation of Novel Urethane-Siloxane Co-Polymers Based on Poly(epsilon-Caprolactone)-block-Poly(Dimethylsiloxane)-block-Poly(epsilon-Caprolactone). in Journal of Biomaterials Science-Polymer Edition. 2012;23(13):1629-1657.
doi:10.1163/092050611X589338 .

Pergal, Marija V., Antić, Vesna, Tovilović, Gordana, Nestorov, Jelena, Vasiljević-Radović, Dana, Djonlagić, Jasna, "In Vitro Biocompatibility Evaluation of Novel Urethane-Siloxane Co-Polymers Based on Poly(epsilon-Caprolactone)-block-Poly(Dimethylsiloxane)-block-Poly(epsilon-Caprolactone)" in Journal of Biomaterials Science-Polymer Edition, 23, no. 13 (2012):1629-1657,
https://doi.org/10.1163/092050611X589338 . .

TY  - JOUR
AU  - Balaban, Milica
AU  - Antić, Vesna
AU  - Pergal, Marija V.
AU  - Francolini, Iolanda
AU  - Martinelli, Andrea
AU  - Djonlagić, Jasna
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2969
AB  - Segmented poly(urethane-urea-siloxanes) (PUUS) based on 4,4'- methylene diphenyl diisocyanate-ethylene diamine (MDI-ED) hard segments and hydroxypropyl-terminated poly(dimethylsiloxane) (PDMS, Mn = 1000 g mol-1) soft segments were prepared under various experimental conditions. The copolymers with constant molar ratio of hard and soft segments (PDMS:MDI:ED = 1:2:1; 20 wt. % of the hard segments) were synthesized in two different solvent mixtures, by a two-step polyaddition procedure. The first one was tetrahydrofuran/N,N-dimethylacetamide (THF/DMAc) with different co-solvent ratios (1/1, 1/2 and 1/9, v/v), whereas the second one was tetrahydrofuran/N-methylpyrrolidone (THF/NMP, 1/9, v/v). The reaction conditions were optimized by varying the co-solvents ratio, the concentration of the catalyst, the initial monomer concentration, as well as the time of the first and the second step of the reaction. The effects of the experimental conditions on the size of the PUUS were investigated by gel permeation chromatography (GPC) and dilute solution viscometry. The copolymers with the highest molecular weights were obtained in the THF/NMP mixture (1/9, v/v). The structure and composition of the copolymers were determined by 1H-NMR and FTIR spectroscopy. The morphology of the synthesized copolymers was investigated by atomic force microscopy (AFM), while the thermal properties were studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The surface properties were evaluated by measuring the water contact angle (WCA). The copolymers exhibited phase-separated microstructure and were stable up to 200°C in nitrogen.
AB  - Segmentirani poli(uretan-urea-siloksani) (PUUS), sa tvrdim segmentima na bazi 4,4'-metilendifenildiizocijanata i etilendiamina (MDI-ED) i mekim segmentima na bazi hidroksipropil-terminiranog poli(dimetilsiloksana) (PDMS, Mn = 1000 g mol-1), sintetisani su pod različitim eksperimentalnim uslovima. Kopolimeri sa konstantnim molskim odnosom tvrdih i mekih segmenata (PDMS:MDI:ED = 1:2:1; 20 mas. % tvrdih segmenata), sintetisani su u dve različite smeše rastvarača kao reakcionog medijuma, metodom dvostepene poliadicije. Prva kombinacija rastvarača je bila smeša tetrahidrofurana (THF) i N,N-dimetilacetamida (DMAc), dok je u drugom slučaju korišćena smeša THF-a i N-metilpirolidona (NMP). Reakcioni uslovi su optimizovani u pogledu odnosa ko-rastvarača, koncentracije katalizatora, početne koncentracije monomera i vremena odigravanja prve i druge faze reakcije. Ispitan je uticaj primenjenih eksperimentalnih uslova na veličinu PUUS primenom gel-propusne hromatografije (GPC) i viskozimetrije razblaženih rastvora [η]. Kopolimeri najvećih molarnih masa su dobijeni u smeši THF/NMP (1/9, v/v). Struktura i sastav kopolimera su okarakterisani 1H-NMR i FTIR spektroskopijom. Morfologija sintetisanih kopolimera je ispitana mikroskopijom atomskih sila (AFM), dok su termička svojstva ispitana diferencijalnom skenirajućom kalorimetrijom (DSC) i termogravimetrijskom analizom (TGA). Površinska svojstva kopolimera su ispitana određivanjem kontaktnih uglova sa vodom (WCA). Kopolimeri su pokazali dvofaznu mikrostrukturu i bili su stabilni do 200°C u atmosteri azota.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - The effect of polar solvents on the synthesis of poly(urethane-urea-siloxane)s
T1  - Uticaj polarnih rastvarača na sintezu poli(uretan-urea-siloksana)
EP  - 1481
IS  - 10
SP  - 1457
VL  - 77
DO  - 10.2298/JSC111025056B
ER  - 

@article{
author = "Balaban, Milica and Antić, Vesna and Pergal, Marija V. and Francolini, Iolanda and Martinelli, Andrea and Djonlagić, Jasna",
year = "2012",
abstract = "Segmented poly(urethane-urea-siloxanes) (PUUS) based on 4,4'- methylene diphenyl diisocyanate-ethylene diamine (MDI-ED) hard segments and hydroxypropyl-terminated poly(dimethylsiloxane) (PDMS, Mn = 1000 g mol-1) soft segments were prepared under various experimental conditions. The copolymers with constant molar ratio of hard and soft segments (PDMS:MDI:ED = 1:2:1; 20 wt. % of the hard segments) were synthesized in two different solvent mixtures, by a two-step polyaddition procedure. The first one was tetrahydrofuran/N,N-dimethylacetamide (THF/DMAc) with different co-solvent ratios (1/1, 1/2 and 1/9, v/v), whereas the second one was tetrahydrofuran/N-methylpyrrolidone (THF/NMP, 1/9, v/v). The reaction conditions were optimized by varying the co-solvents ratio, the concentration of the catalyst, the initial monomer concentration, as well as the time of the first and the second step of the reaction. The effects of the experimental conditions on the size of the PUUS were investigated by gel permeation chromatography (GPC) and dilute solution viscometry. The copolymers with the highest molecular weights were obtained in the THF/NMP mixture (1/9, v/v). The structure and composition of the copolymers were determined by 1H-NMR and FTIR spectroscopy. The morphology of the synthesized copolymers was investigated by atomic force microscopy (AFM), while the thermal properties were studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The surface properties were evaluated by measuring the water contact angle (WCA). The copolymers exhibited phase-separated microstructure and were stable up to 200°C in nitrogen., Segmentirani poli(uretan-urea-siloksani) (PUUS), sa tvrdim segmentima na bazi 4,4'-metilendifenildiizocijanata i etilendiamina (MDI-ED) i mekim segmentima na bazi hidroksipropil-terminiranog poli(dimetilsiloksana) (PDMS, Mn = 1000 g mol-1), sintetisani su pod različitim eksperimentalnim uslovima. Kopolimeri sa konstantnim molskim odnosom tvrdih i mekih segmenata (PDMS:MDI:ED = 1:2:1; 20 mas. % tvrdih segmenata), sintetisani su u dve različite smeše rastvarača kao reakcionog medijuma, metodom dvostepene poliadicije. Prva kombinacija rastvarača je bila smeša tetrahidrofurana (THF) i N,N-dimetilacetamida (DMAc), dok je u drugom slučaju korišćena smeša THF-a i N-metilpirolidona (NMP). Reakcioni uslovi su optimizovani u pogledu odnosa ko-rastvarača, koncentracije katalizatora, početne koncentracije monomera i vremena odigravanja prve i druge faze reakcije. Ispitan je uticaj primenjenih eksperimentalnih uslova na veličinu PUUS primenom gel-propusne hromatografije (GPC) i viskozimetrije razblaženih rastvora [η]. Kopolimeri najvećih molarnih masa su dobijeni u smeši THF/NMP (1/9, v/v). Struktura i sastav kopolimera su okarakterisani 1H-NMR i FTIR spektroskopijom. Morfologija sintetisanih kopolimera je ispitana mikroskopijom atomskih sila (AFM), dok su termička svojstva ispitana diferencijalnom skenirajućom kalorimetrijom (DSC) i termogravimetrijskom analizom (TGA). Površinska svojstva kopolimera su ispitana određivanjem kontaktnih uglova sa vodom (WCA). Kopolimeri su pokazali dvofaznu mikrostrukturu i bili su stabilni do 200°C u atmosteri azota.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "The effect of polar solvents on the synthesis of poly(urethane-urea-siloxane)s, Uticaj polarnih rastvarača na sintezu poli(uretan-urea-siloksana)",
pages = "1481-1457",
number = "10",
volume = "77",
doi = "10.2298/JSC111025056B"
}

Balaban, M., Antić, V., Pergal, M. V., Francolini, I., Martinelli, A.,& Djonlagić, J.. (2012). The effect of polar solvents on the synthesis of poly(urethane-urea-siloxane)s. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 77(10), 1457-1481.
https://doi.org/10.2298/JSC111025056B

Balaban M, Antić V, Pergal MV, Francolini I, Martinelli A, Djonlagić J. The effect of polar solvents on the synthesis of poly(urethane-urea-siloxane)s. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2012;77(10):1457-1481.
doi:10.2298/JSC111025056B .

Balaban, Milica, Antić, Vesna, Pergal, Marija V., Francolini, Iolanda, Martinelli, Andrea, Djonlagić, Jasna, "The effect of polar solvents on the synthesis of poly(urethane-urea-siloxane)s" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 77, no. 10 (2012):1457-1481,
https://doi.org/10.2298/JSC111025056B . .

TY  - CHAP
AU  - Antić, Vesna
AU  - Pergal, Marija V.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2419
AB  - Synthesis, properties and application of thermoplastic polyester, poly (buthylene terephthalate) (PBT), are presented. The advantages and disadvantages of two synthetic routes-from dimethyl terephthalate (DMT) and terephthalic acid (TPA)-are given. The reaction conditions of the DMT route, as the main industrial synthetic route, are described in detail. The most frequently used catalysts are given, as well as the conditions for the solid-state postpolymerization. Physical and chemical properties of the filled and unfilled PBT grades are described. The use of different additives for various PBT formulations is described. Blending of PBT with other polymers, as a powerful route for obtaining materials with improved property/cost performances, is highlighted. A wide variety of nanoparticles, such as clays, carbon nanotubes, etc which are often used for the enhancement of physical, mechanical and thermal properties of PBT nanocomposites, are described. This chapter also emphasizes the most recent development in PBT-layered silicate nanocomposites.
T2  - Handbook of Engineering and Speciality Thermoplastics: Polyethers and Polyesters
T1  - Poly(butylene terephthalate)-Synthesis, Properties, Application
EP  - 180
SP  - 127
VL  - 3
DO  - 10.1002/9781118104729.ch5
ER  - 

@inbook{
author = "Antić, Vesna and Pergal, Marija V.",
year = "2011",
abstract = "Synthesis, properties and application of thermoplastic polyester, poly (buthylene terephthalate) (PBT), are presented. The advantages and disadvantages of two synthetic routes-from dimethyl terephthalate (DMT) and terephthalic acid (TPA)-are given. The reaction conditions of the DMT route, as the main industrial synthetic route, are described in detail. The most frequently used catalysts are given, as well as the conditions for the solid-state postpolymerization. Physical and chemical properties of the filled and unfilled PBT grades are described. The use of different additives for various PBT formulations is described. Blending of PBT with other polymers, as a powerful route for obtaining materials with improved property/cost performances, is highlighted. A wide variety of nanoparticles, such as clays, carbon nanotubes, etc which are often used for the enhancement of physical, mechanical and thermal properties of PBT nanocomposites, are described. This chapter also emphasizes the most recent development in PBT-layered silicate nanocomposites.",
journal = "Handbook of Engineering and Speciality Thermoplastics: Polyethers and Polyesters",
booktitle = "Poly(butylene terephthalate)-Synthesis, Properties, Application",
pages = "180-127",
volume = "3",
doi = "10.1002/9781118104729.ch5"
}

Antić, V.,& Pergal, M. V.. (2011). Poly(butylene terephthalate)-Synthesis, Properties, Application. in Handbook of Engineering and Speciality Thermoplastics: Polyethers and Polyesters, 3, 127-180.
https://doi.org/10.1002/9781118104729.ch5

Antić V, Pergal MV. Poly(butylene terephthalate)-Synthesis, Properties, Application. in Handbook of Engineering and Speciality Thermoplastics: Polyethers and Polyesters. 2011;3:127-180.
doi:10.1002/9781118104729.ch5 .

Antić, Vesna, Pergal, Marija V., "Poly(butylene terephthalate)-Synthesis, Properties, Application" in Handbook of Engineering and Speciality Thermoplastics: Polyethers and Polyesters, 3 (2011):127-180,
https://doi.org/10.1002/9781118104729.ch5 . .

TY  - JOUR
AU  - Pergal, Marija V.
AU  - Antić, Vesna
AU  - Govedarica, Milutin N.
AU  - Godjevac, Dejan
AU  - Ostojić, Sanja
AU  - Djonlagić, Jasna
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2675
AB  - Novel polyurethane copolymers derived from 4,4'-methylenediphenyl diisocyanate (MDI), 1,4-butanediol (BD) and alpha, omega-dihydroxy-[poly(caprolactone)-poly (dimethylsiloxane)-poly(caprolactone)] (a, x-dihydroxy( PCL-PDMS-PCL); (M) over bar (n) 6100 g mol(-1)) were synthesized by a two-step polyaddition reaction in solution. In the synthesis of the polyurethanes, the PCL blocks served as a compatibilizer between the nonpolar PDMS blocks and the polar comonomers, MDI and BD. The synthesis of thermoplastic polyurethanes (TPU) with high soft segment contents was optimized in terms of the concentrations of the reactants, the molar ratio of the NCO/OH groups, and the time and temperature of the polyaddition reaction. The structure, composition, and hard MDI/BD segment length of the synthesized polyurethane copolymers were determined by H-1, C-13-NMR, and two-dimensional correlation (COSY, HSQC, and HMBC) spectroscopy, while the hydrogen bonding interactions in the copolymers were analyzed by FT-IR spectroscopy. The influence of the reaction conditions on the structure, molecular weight, thermal, and some physical properties was studied at constant composition of the reaction mixture. A change in the molar ratio of the NCO/OH groups and the reaction conditions modified not only the molecular weight of the synthesized polyurethanes, but also the microstructure and therefore the thermal and physical properties of the copolymers. It was demonstrated that only PCL segments with high soft segment contents crystallize, thereby showing spherulitic morphology.
PB  - Wiley-Blackwell, Hoboken
T2  - Journal of Applied Polymer Science
T1  - Synthesis and Characterization of Novel Urethane-Siloxane Copolymers with a High Content of PCL-PDMS-PCL Segments
EP  - 2730
IS  - 4
SP  - 2715
VL  - 122
DO  - 10.1002/app.33926
ER  - 

@article{
author = "Pergal, Marija V. and Antić, Vesna and Govedarica, Milutin N. and Godjevac, Dejan and Ostojić, Sanja and Djonlagić, Jasna",
year = "2011",
abstract = "Novel polyurethane copolymers derived from 4,4'-methylenediphenyl diisocyanate (MDI), 1,4-butanediol (BD) and alpha, omega-dihydroxy-[poly(caprolactone)-poly (dimethylsiloxane)-poly(caprolactone)] (a, x-dihydroxy( PCL-PDMS-PCL); (M) over bar (n) 6100 g mol(-1)) were synthesized by a two-step polyaddition reaction in solution. In the synthesis of the polyurethanes, the PCL blocks served as a compatibilizer between the nonpolar PDMS blocks and the polar comonomers, MDI and BD. The synthesis of thermoplastic polyurethanes (TPU) with high soft segment contents was optimized in terms of the concentrations of the reactants, the molar ratio of the NCO/OH groups, and the time and temperature of the polyaddition reaction. The structure, composition, and hard MDI/BD segment length of the synthesized polyurethane copolymers were determined by H-1, C-13-NMR, and two-dimensional correlation (COSY, HSQC, and HMBC) spectroscopy, while the hydrogen bonding interactions in the copolymers were analyzed by FT-IR spectroscopy. The influence of the reaction conditions on the structure, molecular weight, thermal, and some physical properties was studied at constant composition of the reaction mixture. A change in the molar ratio of the NCO/OH groups and the reaction conditions modified not only the molecular weight of the synthesized polyurethanes, but also the microstructure and therefore the thermal and physical properties of the copolymers. It was demonstrated that only PCL segments with high soft segment contents crystallize, thereby showing spherulitic morphology.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Journal of Applied Polymer Science",
title = "Synthesis and Characterization of Novel Urethane-Siloxane Copolymers with a High Content of PCL-PDMS-PCL Segments",
pages = "2730-2715",
number = "4",
volume = "122",
doi = "10.1002/app.33926"
}

Pergal, M. V., Antić, V., Govedarica, M. N., Godjevac, D., Ostojić, S.,& Djonlagić, J.. (2011). Synthesis and Characterization of Novel Urethane-Siloxane Copolymers with a High Content of PCL-PDMS-PCL Segments. in Journal of Applied Polymer Science
Wiley-Blackwell, Hoboken., 122(4), 2715-2730.
https://doi.org/10.1002/app.33926

Pergal MV, Antić V, Govedarica MN, Godjevac D, Ostojić S, Djonlagić J. Synthesis and Characterization of Novel Urethane-Siloxane Copolymers with a High Content of PCL-PDMS-PCL Segments. in Journal of Applied Polymer Science. 2011;122(4):2715-2730.
doi:10.1002/app.33926 .

Pergal, Marija V., Antić, Vesna, Govedarica, Milutin N., Godjevac, Dejan, Ostojić, Sanja, Djonlagić, Jasna, "Synthesis and Characterization of Novel Urethane-Siloxane Copolymers with a High Content of PCL-PDMS-PCL Segments" in Journal of Applied Polymer Science, 122, no. 4 (2011):2715-2730,
https://doi.org/10.1002/app.33926 . .

TY  - JOUR
AU  - Ilić, Mila
AU  - Antić, Mališa
AU  - Antić, Vesna
AU  - Schwarzbauer, Jan
AU  - Vrvić, Miroslav M.
AU  - Jovančićević, Branimir
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2691
AB  - Bioremediation potential of bacteria and fungi isolated from sludge samples has been investigated (Danube alluvium, Panevo, Serbia). Total isolated microorganisms were divided into three parts. One part was added with actidione antifungicide. The second part was added with streptomycin antibiotic. The third part was without additives. Paraffinic type of crude oil was a substrate for assessment of bioremediation potential. The simulated oil biodegradation lasted 30, 60 and 90 days. Parallel with that, the experiments with blind trial were conducted. Extracts were isolated from the samples with chloroform in a separate funnel. They were assayed for the group composition (alkanes, aromatics, alcohols and fatty acids) by column chromatography. Alkane fraction was analysed by gas chromatography-mass spectrometry (GC-MS). The most intense oil degradation was achieved in the experiments with bacteria, somewhat weaker with consortium of fungi and bacteria, and the weakest bioremediation potential in these experiments was shown by fungi.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Chemistry Letters
T1  - Investigation of bioremediation potential of zymogenous bacteria and fungi for crude oil degradation
EP  - 140
IS  - 1
SP  - 133
VL  - 9
DO  - 10.1007/s10311-009-0257-3
ER  - 

@article{
author = "Ilić, Mila and Antić, Mališa and Antić, Vesna and Schwarzbauer, Jan and Vrvić, Miroslav M. and Jovančićević, Branimir",
year = "2011",
abstract = "Bioremediation potential of bacteria and fungi isolated from sludge samples has been investigated (Danube alluvium, Panevo, Serbia). Total isolated microorganisms were divided into three parts. One part was added with actidione antifungicide. The second part was added with streptomycin antibiotic. The third part was without additives. Paraffinic type of crude oil was a substrate for assessment of bioremediation potential. The simulated oil biodegradation lasted 30, 60 and 90 days. Parallel with that, the experiments with blind trial were conducted. Extracts were isolated from the samples with chloroform in a separate funnel. They were assayed for the group composition (alkanes, aromatics, alcohols and fatty acids) by column chromatography. Alkane fraction was analysed by gas chromatography-mass spectrometry (GC-MS). The most intense oil degradation was achieved in the experiments with bacteria, somewhat weaker with consortium of fungi and bacteria, and the weakest bioremediation potential in these experiments was shown by fungi.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Chemistry Letters",
title = "Investigation of bioremediation potential of zymogenous bacteria and fungi for crude oil degradation",
pages = "140-133",
number = "1",
volume = "9",
doi = "10.1007/s10311-009-0257-3"
}

Ilić, M., Antić, M., Antić, V., Schwarzbauer, J., Vrvić, M. M.,& Jovančićević, B.. (2011). Investigation of bioremediation potential of zymogenous bacteria and fungi for crude oil degradation. in Environmental Chemistry Letters
Springer Heidelberg, Heidelberg., 9(1), 133-140.
https://doi.org/10.1007/s10311-009-0257-3

Ilić M, Antić M, Antić V, Schwarzbauer J, Vrvić MM, Jovančićević B. Investigation of bioremediation potential of zymogenous bacteria and fungi for crude oil degradation. in Environmental Chemistry Letters. 2011;9(1):133-140.
doi:10.1007/s10311-009-0257-3 .

Ilić, Mila, Antić, Mališa, Antić, Vesna, Schwarzbauer, Jan, Vrvić, Miroslav M., Jovančićević, Branimir, "Investigation of bioremediation potential of zymogenous bacteria and fungi for crude oil degradation" in Environmental Chemistry Letters, 9, no. 1 (2011):133-140,
https://doi.org/10.1007/s10311-009-0257-3 . .

TY  - JOUR
AU  - Pergal, Marija V.
AU  - Antić, Vesna
AU  - Ostojić, Sanja
AU  - Marinović-Cincović, Milena
AU  - Djonlagić, Jasna
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2697
AB  - A series of novel thermoplastic urethane-siloxane copolymers (TPUSs) based on a α,ω-dihydroxy-[poly(ε-caprolactone)-b-poly(dimethylsiloxane)-b- -poly(ε-caprolactone)] (α,ω-dihydroxy-PCL-PDMS-PCL) triblock copolymer, 4,4'-methylenediphenyl diisocyanate (MDI) and 1,4-butanediol (BD) was synthesized. The effects of the content (9-63 mass %) of hard urethane segments and their degree of polymerization on the properties of the segmented TPUSs were investigated. The structure, composition and hard segment degree of polymerization of the hard segments were examined using 1H- and quantitative 13C-NMR spectroscopy. The degree of crystallinity of the synthesized copolymers was determined using wide-angle X-ray scattering (WAXS). The surface properties were evaluated by measuring the water contact angle and water absorption. In the series of the TPUSs, the average degree of polymerization of the hard segments was varied from 1.2 to 14.4 MDI-BD units. It was found that average values from 3.8 to 14.4 MDI-BD units were effective segment lengths for crystallization of hard segments, which resulted in an increase in the degree of microphase separation of the copolymers. Spherulite-like superstructures were observed in copolymer films by scanning electron microscopy (SEM), which are believed to arise from the crystallization of the hard segments and/or PCL segments, depending on the content of the hard segments. The surface of the copolymers became more hydrophobic with increasing weight fraction of PDMS. The synthesized copolymers based on a PCL-PDMS-PCL segment showed good thermal stability, which increased with increasing content of soft PDMS segments, as was confirmed by the value of the starting temperature of thermal degradation.
AB  - U ovom radu prikazana je struktura i neka svojstva serije novih termoplastičnih uretan-siloksanskih kopolimera (TPUSs) na bazi α,ω-dihidroksi-[poli(ε-kaprolakton)-b-poli(dimetilsiloksan)-b-poli(ε-kaprolakton)] triblok kopolimera (α,ω-dihidroksi-PCL-PDMS-PCL), 4,4'-metilendifenildiizocijanata (MDI) i 1,4-butandiola (BD). Ispitan je uticaj sadržaja uretanskog tvrdog segmenta (9-63 mas. %) i njegove dužine, tj. stepena polimerizacije, izražene preko broja MDI-BD ostataka, na svojstva segmentiranih TPUSs. Struktura, sastav i stepen polimerizacije tvrdog segmenta su ispitani pomoću 1H- i kvantitativne 13C-NMR spektroskopije. Stepen kristaliničnosti kopolimera je određen metodom difrakcije X-zraka na velikim uglovima (WAXS). Površinska svojstva kopolimera su ispitana određivanjem kontaktnih uglova sa vodom i merenjem apsorpcije vode. U seriji kopolimera dužina tvrdog segmenta izražena preko broja ponavljajućih MDI-BD jedinica je varirana od 1,2 do 14,4. Utvrđeno je da tvrdi segmenti sa 3,8 do 14,4 ponavljajućih MDI-BD jedinica efikasno kristališu, što je rezultovalo u povećanju stepena mikrofazne separacije kopolimera. SEM analiza je pokazala prisustvo sferulitne strukture u kopolimernim filmovima, koja najverovatnije potiče od kristalizacije tvrdih i/ili PCL segmenata, zavisno od sadržaja tvrdih segmenata. Hidrofobnost površine kopolimera je rasla sa povećanjem masenog udela PDMS-a u odgovarajućem uzorku. Sintetisani poliuretani na bazi PCL-PDMS-PCL pokazuju povećanje termičke stabilnosti sa povećanjem sadržaja mekih PDMS segmenata, što je potvrđeno porastom početne temperature degradacije, određene TG analizom.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Influence of the content of hard segments on the properties of novel urethane-siloxane copolymers based on a poly(ε-caprolactone)-b-poly(dimethylsiloxane)-b-poly(ε-caprolactone) triblock copolymer
T1  - Uticaj sadržaja tvrdog segmenta na svojstva novih uretan-siloksanskih kopolimera na bazi poli(e-kaprolakton)-b-poli(dimetilsiloksan)-b-poli(e-kaprolaktona)
EP  - 1723
IS  - 12
SP  - 1703
VL  - 76
DO  - 10.2298/JSC110307146P
ER  - 

@article{
author = "Pergal, Marija V. and Antić, Vesna and Ostojić, Sanja and Marinović-Cincović, Milena and Djonlagić, Jasna",
year = "2011",
abstract = "A series of novel thermoplastic urethane-siloxane copolymers (TPUSs) based on a α,ω-dihydroxy-[poly(ε-caprolactone)-b-poly(dimethylsiloxane)-b- -poly(ε-caprolactone)] (α,ω-dihydroxy-PCL-PDMS-PCL) triblock copolymer, 4,4'-methylenediphenyl diisocyanate (MDI) and 1,4-butanediol (BD) was synthesized. The effects of the content (9-63 mass %) of hard urethane segments and their degree of polymerization on the properties of the segmented TPUSs were investigated. The structure, composition and hard segment degree of polymerization of the hard segments were examined using 1H- and quantitative 13C-NMR spectroscopy. The degree of crystallinity of the synthesized copolymers was determined using wide-angle X-ray scattering (WAXS). The surface properties were evaluated by measuring the water contact angle and water absorption. In the series of the TPUSs, the average degree of polymerization of the hard segments was varied from 1.2 to 14.4 MDI-BD units. It was found that average values from 3.8 to 14.4 MDI-BD units were effective segment lengths for crystallization of hard segments, which resulted in an increase in the degree of microphase separation of the copolymers. Spherulite-like superstructures were observed in copolymer films by scanning electron microscopy (SEM), which are believed to arise from the crystallization of the hard segments and/or PCL segments, depending on the content of the hard segments. The surface of the copolymers became more hydrophobic with increasing weight fraction of PDMS. The synthesized copolymers based on a PCL-PDMS-PCL segment showed good thermal stability, which increased with increasing content of soft PDMS segments, as was confirmed by the value of the starting temperature of thermal degradation., U ovom radu prikazana je struktura i neka svojstva serije novih termoplastičnih uretan-siloksanskih kopolimera (TPUSs) na bazi α,ω-dihidroksi-[poli(ε-kaprolakton)-b-poli(dimetilsiloksan)-b-poli(ε-kaprolakton)] triblok kopolimera (α,ω-dihidroksi-PCL-PDMS-PCL), 4,4'-metilendifenildiizocijanata (MDI) i 1,4-butandiola (BD). Ispitan je uticaj sadržaja uretanskog tvrdog segmenta (9-63 mas. %) i njegove dužine, tj. stepena polimerizacije, izražene preko broja MDI-BD ostataka, na svojstva segmentiranih TPUSs. Struktura, sastav i stepen polimerizacije tvrdog segmenta su ispitani pomoću 1H- i kvantitativne 13C-NMR spektroskopije. Stepen kristaliničnosti kopolimera je određen metodom difrakcije X-zraka na velikim uglovima (WAXS). Površinska svojstva kopolimera su ispitana određivanjem kontaktnih uglova sa vodom i merenjem apsorpcije vode. U seriji kopolimera dužina tvrdog segmenta izražena preko broja ponavljajućih MDI-BD jedinica je varirana od 1,2 do 14,4. Utvrđeno je da tvrdi segmenti sa 3,8 do 14,4 ponavljajućih MDI-BD jedinica efikasno kristališu, što je rezultovalo u povećanju stepena mikrofazne separacije kopolimera. SEM analiza je pokazala prisustvo sferulitne strukture u kopolimernim filmovima, koja najverovatnije potiče od kristalizacije tvrdih i/ili PCL segmenata, zavisno od sadržaja tvrdih segmenata. Hidrofobnost površine kopolimera je rasla sa povećanjem masenog udela PDMS-a u odgovarajućem uzorku. Sintetisani poliuretani na bazi PCL-PDMS-PCL pokazuju povećanje termičke stabilnosti sa povećanjem sadržaja mekih PDMS segmenata, što je potvrđeno porastom početne temperature degradacije, određene TG analizom.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Influence of the content of hard segments on the properties of novel urethane-siloxane copolymers based on a poly(ε-caprolactone)-b-poly(dimethylsiloxane)-b-poly(ε-caprolactone) triblock copolymer, Uticaj sadržaja tvrdog segmenta na svojstva novih uretan-siloksanskih kopolimera na bazi poli(e-kaprolakton)-b-poli(dimetilsiloksan)-b-poli(e-kaprolaktona)",
pages = "1723-1703",
number = "12",
volume = "76",
doi = "10.2298/JSC110307146P"
}

Pergal, M. V., Antić, V., Ostojić, S., Marinović-Cincović, M.,& Djonlagić, J.. (2011). Influence of the content of hard segments on the properties of novel urethane-siloxane copolymers based on a poly(ε-caprolactone)-b-poly(dimethylsiloxane)-b-poly(ε-caprolactone) triblock copolymer. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 76(12), 1703-1723.
https://doi.org/10.2298/JSC110307146P

Pergal MV, Antić V, Ostojić S, Marinović-Cincović M, Djonlagić J. Influence of the content of hard segments on the properties of novel urethane-siloxane copolymers based on a poly(ε-caprolactone)-b-poly(dimethylsiloxane)-b-poly(ε-caprolactone) triblock copolymer. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2011;76(12):1703-1723.
doi:10.2298/JSC110307146P .

Pergal, Marija V., Antić, Vesna, Ostojić, Sanja, Marinović-Cincović, Milena, Djonlagić, Jasna, "Influence of the content of hard segments on the properties of novel urethane-siloxane copolymers based on a poly(ε-caprolactone)-b-poly(dimethylsiloxane)-b-poly(ε-caprolactone) triblock copolymer" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 76, no. 12 (2011):1703-1723,
https://doi.org/10.2298/JSC110307146P . .

TY  - JOUR
AU  - Antić, Vesna
AU  - Antić, Mališa
AU  - Kronimus, Alexander
AU  - Oing, Katja
AU  - Schwarzbauer, Jan
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2721
AB  - Poly(vinylpyrrolidone) (PVP) is a widely used and environmentally stable synthetic polymer whose occurrence in wastewater is likely. However, an appropriate method for identification and quantification of this polymer in environmental samples is still lacking. Hence, in this study an analytical method based on continuous-flow off-line pyrolysis-gas chromatography/mass spectrometry (pyrolysis-GC/MS) was developed to identify and quantify PVP in waste and surface water samples. Pyrolysis of commercial PVP, of some personal care products, of spiked water samples as well as of wastewater samples and river water samples was performed in a tube furnace at 500 degrees C under a continuous nitrogen flow. GC/MS was used for identification of specific degradation products, while GC-FID analysis was performed for quantitative determination. The concentration of PVP was calculated on the basis of the main pyrolytic product, N-vinylpyrrolidone (NVP). Very good linear correlation between initial amounts of PVP and released amounts of NVP was obtained and used as external calibration. The detected level of PVP in investigated personal care products was 6.4 (hair gel), 0.8 (laundry detergent) and 1.4%(tablets for throat disinfection). Spiked water samples, wastewater samples and river water samples were pre-extracted with hexane and diethyl ether prior to pyrolysis. It was found that the recovery of spiked samples was 94.6 +/- 1.6% which indicated that pre-extraction did not provoke significant loss of polymer. Finally, application of the developed method on real environmental samples (river water) revealed that PVP was present in effluents from wastewater treatment plants in concentrations between 0.9 mg/L and 7 mg/L, as well as in river water affected by municipal sewage emissions with concentrations around 0.1 mg/L.
PB  - Elsevier, Amsterdam
T2  - Journal of Analytical and Applied Pyrolysis
T1  - Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS
EP  - 99
IS  - 2
SP  - 93
VL  - 90
DO  - 10.1016/j.jaap.2010.10.011
ER  - 

@article{
author = "Antić, Vesna and Antić, Mališa and Kronimus, Alexander and Oing, Katja and Schwarzbauer, Jan",
year = "2011",
abstract = "Poly(vinylpyrrolidone) (PVP) is a widely used and environmentally stable synthetic polymer whose occurrence in wastewater is likely. However, an appropriate method for identification and quantification of this polymer in environmental samples is still lacking. Hence, in this study an analytical method based on continuous-flow off-line pyrolysis-gas chromatography/mass spectrometry (pyrolysis-GC/MS) was developed to identify and quantify PVP in waste and surface water samples. Pyrolysis of commercial PVP, of some personal care products, of spiked water samples as well as of wastewater samples and river water samples was performed in a tube furnace at 500 degrees C under a continuous nitrogen flow. GC/MS was used for identification of specific degradation products, while GC-FID analysis was performed for quantitative determination. The concentration of PVP was calculated on the basis of the main pyrolytic product, N-vinylpyrrolidone (NVP). Very good linear correlation between initial amounts of PVP and released amounts of NVP was obtained and used as external calibration. The detected level of PVP in investigated personal care products was 6.4 (hair gel), 0.8 (laundry detergent) and 1.4%(tablets for throat disinfection). Spiked water samples, wastewater samples and river water samples were pre-extracted with hexane and diethyl ether prior to pyrolysis. It was found that the recovery of spiked samples was 94.6 +/- 1.6% which indicated that pre-extraction did not provoke significant loss of polymer. Finally, application of the developed method on real environmental samples (river water) revealed that PVP was present in effluents from wastewater treatment plants in concentrations between 0.9 mg/L and 7 mg/L, as well as in river water affected by municipal sewage emissions with concentrations around 0.1 mg/L.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Analytical and Applied Pyrolysis",
title = "Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS",
pages = "99-93",
number = "2",
volume = "90",
doi = "10.1016/j.jaap.2010.10.011"
}

Antić, V., Antić, M., Kronimus, A., Oing, K.,& Schwarzbauer, J.. (2011). Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS. in Journal of Analytical and Applied Pyrolysis
Elsevier, Amsterdam., 90(2), 93-99.
https://doi.org/10.1016/j.jaap.2010.10.011

Antić V, Antić M, Kronimus A, Oing K, Schwarzbauer J. Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS. in Journal of Analytical and Applied Pyrolysis. 2011;90(2):93-99.
doi:10.1016/j.jaap.2010.10.011 .

Antić, Vesna, Antić, Mališa, Kronimus, Alexander, Oing, Katja, Schwarzbauer, Jan, "Quantitative determination of poly(vinylpyrrolidone) by continuous-flow off-line pyrolysis-GC/MS" in Journal of Analytical and Applied Pyrolysis, 90, no. 2 (2011):93-99,
https://doi.org/10.1016/j.jaap.2010.10.011 . .

TY  - JOUR
AU  - Antić, Vesna
AU  - Pergal, Marija V.
AU  - Antić, Mališa
AU  - Djonlagić, Jasna
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2261
AB  - Two series of thermoplastic elastomers (TPES), based on poly(dimethylsiloxane) (PDMS) as the soft segment and poly(butylene terephthalate) (PBT) as the hard segment, were analyzed by dynamic mechanical spectroscopy. In the first TPES series the lengths of both hard and soft segments were varied while the mass ratio of the hard to soft segments was nearly constant (about 60 mass%). In the second series, the mass ratio of hard and soft segments was varied in the range from 60/40 to 40/60, with a constant length of soft PDMS segments. The influence of the structure and composition of TPESs on the rheological properties, such as complex dynamic viscosity, μ*, the storage, G', and loss, G', shear modulus as well as the microphase separation transition temperature, TMST, was examined. The obtained results showed that the storage modulus of the TPESs increased in a rubbery plateau region with increase in degree of crystallinity. The rheological measurements of TPESs also showed that a microphase reorganization occurred during the melting process. The microphase separation transition temperatures were in the range from 220 to 234°C. In the isotropic molten state, the complex dynamic viscosity increased with increasing both the content and length of hard PBT segments.
AB  - Dve serije termoplastičnih elastomera (TPES) na bazi poli(dimetilsiloksana) kao mekog segmenta i poli(butilentereftalata) kao tvrdog segmenta su analizirane dinamičko-mehaničkom spektroskopijom. U prvoj TPES seriji varirane su dužine tvrdih i mekih segmenata dok je njihov maseni odnos bio skoro konstantan (oko 60 mas%). U drugoj seriji, odnos tvrdih i mekih segmenata je variran u opsegu od 60/40 do 40/60, dok je dužina mekih PDMS segmenata bila konstantna. Ispitan je uticaj strukture i sastava TPES kopolimera na reološka svojstva, kao što su kompleksni dinamički viskozitet, μ*, moduli sačuvane, G', i izgubljene energije, G', i temperatura mikrofaznog razdvajanja, TMST. Dobijeni rezultati su pokazali da su uzorci sa većim stepenom kristaliničnosti imali i veće module sačuvane energije u gumolikom platou. Reološka merenja su takođe pokazala da svi TPES uzorci ispoljavaju mikrofaznu reorganizaciju u procesu topljenja. Temperature mikrofaznog razdvajanja su bile u opsegu od 220 do 234°C. U izotropskom rastopu, kompleksni dinamički viskoziteti su rasli sa povećanjem sadržaja i dužine PBT segmenata.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Rheological behaviour of thermoplastic poly(ester-siloxane)s
T1  - Reološko ponašanje termoplastičnih poli(estar-siloksana)
EP  - 545
IS  - 6
SP  - 537
VL  - 64
DO  - 10.2298/HEMIND101015067A
ER  - 

@article{
author = "Antić, Vesna and Pergal, Marija V. and Antić, Mališa and Djonlagić, Jasna",
year = "2010",
abstract = "Two series of thermoplastic elastomers (TPES), based on poly(dimethylsiloxane) (PDMS) as the soft segment and poly(butylene terephthalate) (PBT) as the hard segment, were analyzed by dynamic mechanical spectroscopy. In the first TPES series the lengths of both hard and soft segments were varied while the mass ratio of the hard to soft segments was nearly constant (about 60 mass%). In the second series, the mass ratio of hard and soft segments was varied in the range from 60/40 to 40/60, with a constant length of soft PDMS segments. The influence of the structure and composition of TPESs on the rheological properties, such as complex dynamic viscosity, μ*, the storage, G', and loss, G', shear modulus as well as the microphase separation transition temperature, TMST, was examined. The obtained results showed that the storage modulus of the TPESs increased in a rubbery plateau region with increase in degree of crystallinity. The rheological measurements of TPESs also showed that a microphase reorganization occurred during the melting process. The microphase separation transition temperatures were in the range from 220 to 234°C. In the isotropic molten state, the complex dynamic viscosity increased with increasing both the content and length of hard PBT segments., Dve serije termoplastičnih elastomera (TPES) na bazi poli(dimetilsiloksana) kao mekog segmenta i poli(butilentereftalata) kao tvrdog segmenta su analizirane dinamičko-mehaničkom spektroskopijom. U prvoj TPES seriji varirane su dužine tvrdih i mekih segmenata dok je njihov maseni odnos bio skoro konstantan (oko 60 mas%). U drugoj seriji, odnos tvrdih i mekih segmenata je variran u opsegu od 60/40 do 40/60, dok je dužina mekih PDMS segmenata bila konstantna. Ispitan je uticaj strukture i sastava TPES kopolimera na reološka svojstva, kao što su kompleksni dinamički viskozitet, μ*, moduli sačuvane, G', i izgubljene energije, G', i temperatura mikrofaznog razdvajanja, TMST. Dobijeni rezultati su pokazali da su uzorci sa većim stepenom kristaliničnosti imali i veće module sačuvane energije u gumolikom platou. Reološka merenja su takođe pokazala da svi TPES uzorci ispoljavaju mikrofaznu reorganizaciju u procesu topljenja. Temperature mikrofaznog razdvajanja su bile u opsegu od 220 do 234°C. U izotropskom rastopu, kompleksni dinamički viskoziteti su rasli sa povećanjem sadržaja i dužine PBT segmenata.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Rheological behaviour of thermoplastic poly(ester-siloxane)s, Reološko ponašanje termoplastičnih poli(estar-siloksana)",
pages = "545-537",
number = "6",
volume = "64",
doi = "10.2298/HEMIND101015067A"
}

Antić, V., Pergal, M. V., Antić, M.,& Djonlagić, J.. (2010). Rheological behaviour of thermoplastic poly(ester-siloxane)s. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 64(6), 537-545.
https://doi.org/10.2298/HEMIND101015067A

Antić V, Pergal MV, Antić M, Djonlagić J. Rheological behaviour of thermoplastic poly(ester-siloxane)s. in Hemijska industrija. 2010;64(6):537-545.
doi:10.2298/HEMIND101015067A .

Antić, Vesna, Pergal, Marija V., Antić, Mališa, Djonlagić, Jasna, "Rheological behaviour of thermoplastic poly(ester-siloxane)s" in Hemijska industrija, 64, no. 6 (2010):537-545,
https://doi.org/10.2298/HEMIND101015067A . .

TY  - JOUR
AU  - Antić, Vesna
AU  - Vucković, Marija V.
AU  - Dojčinović, Biljana
AU  - Antić, Mališa
AU  - Barać, Miroljub
AU  - Govedarica, Milutin N.
PY  - 2008
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1801
AB  - The modality of the incorporation of silanol-terminated siloxanes into copolymers with butylene terephthalate were investigated and determined. Besides siloxanes, the other participants in this well-known copolymerization, called the catalyzed two-step transesterification/polycondensation reaction, are dimethyl terephthalate and 1,4-butanediol. The employed approach to this problem was to exactly examine all the possibilities of the reactions between particular pairs of reactants, as well as of single reactants. The final results were, firstly, that reactions between siloxanes and dimethyl terephthalate did not occur and, secondly, that the only possibility for silanol-terminated siloxanes to be incorporated into the copolymers was by means of their condensation with 1,4-butanediol. This means that siloxanes are incorporated into the copolymer by ether and not by ester linkages.
PB  - Elsevier, Amsterdam
T2  - Reactive & Functional Polymers
T1  - About the mode of incorporation of silanol-terminated polysiloxanes into butylene terephthalate-b-dimethylsiloxane copolymers
EP  - 860
IS  - 4
SP  - 851
VL  - 68
DO  - 10.1016/j.reactfunctpolym.2007.12.004
ER  - 

@article{
author = "Antić, Vesna and Vucković, Marija V. and Dojčinović, Biljana and Antić, Mališa and Barać, Miroljub and Govedarica, Milutin N.",
year = "2008",
abstract = "The modality of the incorporation of silanol-terminated siloxanes into copolymers with butylene terephthalate were investigated and determined. Besides siloxanes, the other participants in this well-known copolymerization, called the catalyzed two-step transesterification/polycondensation reaction, are dimethyl terephthalate and 1,4-butanediol. The employed approach to this problem was to exactly examine all the possibilities of the reactions between particular pairs of reactants, as well as of single reactants. The final results were, firstly, that reactions between siloxanes and dimethyl terephthalate did not occur and, secondly, that the only possibility for silanol-terminated siloxanes to be incorporated into the copolymers was by means of their condensation with 1,4-butanediol. This means that siloxanes are incorporated into the copolymer by ether and not by ester linkages.",
publisher = "Elsevier, Amsterdam",
journal = "Reactive & Functional Polymers",
title = "About the mode of incorporation of silanol-terminated polysiloxanes into butylene terephthalate-b-dimethylsiloxane copolymers",
pages = "860-851",
number = "4",
volume = "68",
doi = "10.1016/j.reactfunctpolym.2007.12.004"
}

Antić, V., Vucković, M. V., Dojčinović, B., Antić, M., Barać, M.,& Govedarica, M. N.. (2008). About the mode of incorporation of silanol-terminated polysiloxanes into butylene terephthalate-b-dimethylsiloxane copolymers. in Reactive & Functional Polymers
Elsevier, Amsterdam., 68(4), 851-860.
https://doi.org/10.1016/j.reactfunctpolym.2007.12.004

Antić V, Vucković MV, Dojčinović B, Antić M, Barać M, Govedarica MN. About the mode of incorporation of silanol-terminated polysiloxanes into butylene terephthalate-b-dimethylsiloxane copolymers. in Reactive & Functional Polymers. 2008;68(4):851-860.
doi:10.1016/j.reactfunctpolym.2007.12.004 .

Antić, Vesna, Vucković, Marija V., Dojčinović, Biljana, Antić, Mališa, Barać, Miroljub, Govedarica, Milutin N., "About the mode of incorporation of silanol-terminated polysiloxanes into butylene terephthalate-b-dimethylsiloxane copolymers" in Reactive & Functional Polymers, 68, no. 4 (2008):851-860,
https://doi.org/10.1016/j.reactfunctpolym.2007.12.004 . .