TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Trifković, Kata
AU  - Bugarski, Branko
AU  - Pavlović, Vladimir
AU  - Dzunuzović, J.
AU  - Tomić, M.
AU  - Marinković, A.D.
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4132
AB  - Influences of the vinyl modified nanosilica Aerosil (R) 380, i.e., vinyl and methacryloyl silane coupling agent and linseed oil fatty acids (BD) reactive residues, on the mechanical properties of the unsaturated polyester resins (UPes) based nanocomposites, was studied. The polycondensation of maleic anhydride and products of poly(ethylene terephthalate) (PET) depolymerization with propylene glycol, with and without separation of ethylene glycol, yields UPe1 and UPe2 resin, respectively. The hydroxyl terminated PET depolymerization products (glycolyzates) and UPes were characterized by acid and hydroxyl values, Fourier Transform Infrared (FTIR) and nuclear magneti resonance (NMR) spectroscopies. Transmission electron microscopy (TEM) confirmed that silica nanoparticles formed domains of aggregates in the polymer matrix. An increase from 195 to 247% of stress at break (sigma(b)), and from 109 to 131% of impact strength (sigma(i)) of UPes based nanocomposites was obtained for 1 wt% addition of vinyl modified silica. Flexural strength (sigma(f)) increase from 106 to 156% for both UPes based nanocomposites with 1 wt% addition of BD modified silica. Cross-linking density (nu), storage modulus (G'), tan delta and T-g of the nanocomposite were determined from the dynamic mechanical testing and discussed in relation to the structure of silica modification.
PB  - Budapest Univ Technol & Econ, Budapest
T2  - Express Polymer Letters
T1  - High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties
EP  - 159
IS  - 2
SP  - 139
VL  - 10
DO  - 10.3144/expresspolymlett.2016.14
ER  - 

@article{
author = "Rusmirović, Jelena D. and Trifković, Kata and Bugarski, Branko and Pavlović, Vladimir and Dzunuzović, J. and Tomić, M. and Marinković, A.D.",
year = "2016",
abstract = "Influences of the vinyl modified nanosilica Aerosil (R) 380, i.e., vinyl and methacryloyl silane coupling agent and linseed oil fatty acids (BD) reactive residues, on the mechanical properties of the unsaturated polyester resins (UPes) based nanocomposites, was studied. The polycondensation of maleic anhydride and products of poly(ethylene terephthalate) (PET) depolymerization with propylene glycol, with and without separation of ethylene glycol, yields UPe1 and UPe2 resin, respectively. The hydroxyl terminated PET depolymerization products (glycolyzates) and UPes were characterized by acid and hydroxyl values, Fourier Transform Infrared (FTIR) and nuclear magneti resonance (NMR) spectroscopies. Transmission electron microscopy (TEM) confirmed that silica nanoparticles formed domains of aggregates in the polymer matrix. An increase from 195 to 247% of stress at break (sigma(b)), and from 109 to 131% of impact strength (sigma(i)) of UPes based nanocomposites was obtained for 1 wt% addition of vinyl modified silica. Flexural strength (sigma(f)) increase from 106 to 156% for both UPes based nanocomposites with 1 wt% addition of BD modified silica. Cross-linking density (nu), storage modulus (G'), tan delta and T-g of the nanocomposite were determined from the dynamic mechanical testing and discussed in relation to the structure of silica modification.",
publisher = "Budapest Univ Technol & Econ, Budapest",
journal = "Express Polymer Letters",
title = "High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties",
pages = "159-139",
number = "2",
volume = "10",
doi = "10.3144/expresspolymlett.2016.14"
}

Rusmirović, J. D., Trifković, K., Bugarski, B., Pavlović, V., Dzunuzović, J., Tomić, M.,& Marinković, A.D.. (2016). High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties. in Express Polymer Letters
Budapest Univ Technol & Econ, Budapest., 10(2), 139-159.
https://doi.org/10.3144/expresspolymlett.2016.14

Rusmirović JD, Trifković K, Bugarski B, Pavlović V, Dzunuzović J, Tomić M, Marinković A. High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties. in Express Polymer Letters. 2016;10(2):139-159.
doi:10.3144/expresspolymlett.2016.14 .

Rusmirović, Jelena D., Trifković, Kata, Bugarski, Branko, Pavlović, Vladimir, Dzunuzović, J., Tomić, M., Marinković, A.D., "High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties" in Express Polymer Letters, 10, no. 2 (2016):139-159,
https://doi.org/10.3144/expresspolymlett.2016.14 . .

TY  - JOUR
AU  - Stanojević, Dušan D.
AU  - Rajković, Miloš
AU  - Tošković, D.V.
AU  - Tomić, M.V.
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1860
AB  - Nowadays, due to using many rare metals in the most advanced technologies, the demand for these metals is increasing. Rare metals, however, mostly don’t show the property of creating their own mineral deposits, making their production more complicated. Some rare metals, e.g. gallium, germanium, indium and thallium usually accompany zinc ore. In the procedure of hydrometallurgical zinc production, the concentrating of these metals occurs in some interproduct processes, out of which they can be extracted. The possibility of obtaining rare metals from these sources is directly caused by the contents and quantities in specific interproducts. This paper deals with controlling the distribution of rare metals Ga, Ge, In and Tl in hydrometallurgical zinc production, in zinc plant Chemical Industry „Zorka„ in Šabac, in order to determine the places and concentration level of controlled rare metals. It is determined that In and Ga are significantly concentrated in specific output mud and precipitates from the process, and that they exist in commercially significant quantities on existing depots of these materials, while it is not the case for Ga and Tl.
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production
EP  - 97
IS  - 1
SP  - 85
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1860
ER  - 

@article{
author = "Stanojević, Dušan D. and Rajković, Miloš and Tošković, D.V. and Tomić, M.V.",
year = "2009",
abstract = "Nowadays, due to using many rare metals in the most advanced technologies, the demand for these metals is increasing. Rare metals, however, mostly don’t show the property of creating their own mineral deposits, making their production more complicated. Some rare metals, e.g. gallium, germanium, indium and thallium usually accompany zinc ore. In the procedure of hydrometallurgical zinc production, the concentrating of these metals occurs in some interproduct processes, out of which they can be extracted. The possibility of obtaining rare metals from these sources is directly caused by the contents and quantities in specific interproducts. This paper deals with controlling the distribution of rare metals Ga, Ge, In and Tl in hydrometallurgical zinc production, in zinc plant Chemical Industry „Zorka„ in Šabac, in order to determine the places and concentration level of controlled rare metals. It is determined that In and Ga are significantly concentrated in specific output mud and precipitates from the process, and that they exist in commercially significant quantities on existing depots of these materials, while it is not the case for Ga and Tl.",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production",
pages = "97-85",
number = "1",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1860"
}

Stanojević, D. D., Rajković, M., Tošković, D.V.,& Tomić, M.V.. (2009). Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 1(1), 85-97.
https://hdl.handle.net/21.15107/rcub_agrospace_1860

Stanojević DD, Rajković M, Tošković D, Tomić M. Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production. in Journal of Engineering & Processing Management. 2009;1(1):85-97.
https://hdl.handle.net/21.15107/rcub_agrospace_1860 .

Stanojević, Dušan D., Rajković, Miloš, Tošković, D.V., Tomić, M.V., "Determination of germanium, gallium, indium and thallium distribution in interproducts of hydrometallurgical zinc production" in Journal of Engineering & Processing Management, 1, no. 1 (2009):85-97,
https://hdl.handle.net/21.15107/rcub_agrospace_1860 .