TY  - JOUR
AU  - Kalifa, Mustafa
AU  - Tomić, Nataša Z.
AU  - Vuksanović, Marija M.
AU  - Stevanović, Sanja
AU  - Dokić, Veljko
AU  - Volkov-Husović, Tatjana
AU  - Pavlović, Vladimir
AU  - Jancić-Heinemann, Radmila
AU  - Marinković, Aleksandar D.
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5401
AB  - Cavitation erosion of hybrid acrylate composite films with polyhedral oligosilsesquioxanes (POSS) was investigated in this study. The hybrid films are made with 1, 3 and 5 wt% of POSS reagents containing: (a) hydroxyl (POSS-M), (b) both hydroxyl and allyl (POSS-M-A) and (c) methacryloyl groups (POSS-M-Cl). Addition of 5 wt% POSS-M-A caused the highest microhardness increase for 49.8%, in comparison to the pure matrix material. Cavitation resistance of hybrid films, estimated as the time-dependent mass loss, was improved by POSS addition. POSS-M-A addition (5 wt%) contributed to 94% lower mass loss comparing to pure Bis-GMA/TEGDMA film. Scanning electron (SEM) and atomic force microscopy (AFM) showed the lowest surface roughness obtained for composite with POSS-M-A. The improved hardness and wear resistance of the composite films indicated that POSS-M-A filler enhanced interfacial adhesion and reinforcing of the Bis-GMA/TEGDMA matrix.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films
EP  - 3410
IS  - 8
SP  - 3403
VL  - 41
DO  - 10.1002/pc.25629
ER  - 

@article{
author = "Kalifa, Mustafa and Tomić, Nataša Z. and Vuksanović, Marija M. and Stevanović, Sanja and Dokić, Veljko and Volkov-Husović, Tatjana and Pavlović, Vladimir and Jancić-Heinemann, Radmila and Marinković, Aleksandar D.",
year = "2020",
abstract = "Cavitation erosion of hybrid acrylate composite films with polyhedral oligosilsesquioxanes (POSS) was investigated in this study. The hybrid films are made with 1, 3 and 5 wt% of POSS reagents containing: (a) hydroxyl (POSS-M), (b) both hydroxyl and allyl (POSS-M-A) and (c) methacryloyl groups (POSS-M-Cl). Addition of 5 wt% POSS-M-A caused the highest microhardness increase for 49.8%, in comparison to the pure matrix material. Cavitation resistance of hybrid films, estimated as the time-dependent mass loss, was improved by POSS addition. POSS-M-A addition (5 wt%) contributed to 94% lower mass loss comparing to pure Bis-GMA/TEGDMA film. Scanning electron (SEM) and atomic force microscopy (AFM) showed the lowest surface roughness obtained for composite with POSS-M-A. The improved hardness and wear resistance of the composite films indicated that POSS-M-A filler enhanced interfacial adhesion and reinforcing of the Bis-GMA/TEGDMA matrix.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films",
pages = "3410-3403",
number = "8",
volume = "41",
doi = "10.1002/pc.25629"
}

Kalifa, M., Tomić, N. Z., Vuksanović, M. M., Stevanović, S., Dokić, V., Volkov-Husović, T., Pavlović, V., Jancić-Heinemann, R.,& Marinković, A. D.. (2020). The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films. in Polymer Composites
Wiley, Hoboken., 41(8), 3403-3410.
https://doi.org/10.1002/pc.25629

Kalifa M, Tomić NZ, Vuksanović MM, Stevanović S, Dokić V, Volkov-Husović T, Pavlović V, Jancić-Heinemann R, Marinković AD. The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films. in Polymer Composites. 2020;41(8):3403-3410.
doi:10.1002/pc.25629 .

Kalifa, Mustafa, Tomić, Nataša Z., Vuksanović, Marija M., Stevanović, Sanja, Dokić, Veljko, Volkov-Husović, Tatjana, Pavlović, Vladimir, Jancić-Heinemann, Radmila, Marinković, Aleksandar D., "The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films" in Polymer Composites, 41, no. 8 (2020):3403-3410,
https://doi.org/10.1002/pc.25629 . .

TY  - JOUR
AU  - Tomić, Nataša Z.
AU  - Vuksanović, Marija M.
AU  - Djokić, Veljko
AU  - Mitrić, Miodrag
AU  - Simić, Milena R.
AU  - Pavlović, Vladimir
AU  - Jancić-Heinemann, Radmila
AU  - Marinković, Aleksandar D.
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5002
AB  - A facile synthesis was employed for three polyhedral oligo silsequioxanes (POSS), obtaining incompletely condensed structures with fern-like and cubic morphologies. Proton nuclear magnetic resonance spectroscopy (H-1 NMR) indicated the successful synthesis of the proposed POSS structures. The hydroxyl groups affected the manner and type of POSS morphology, as seen under a scanning electron microscope (SEM) and a transmission electron microscope (TEM). Fourier-transform infrared spectroscopy (FTIR) showed the availability of surface hydroxyl groups that contributed to the formation of a higher amount of char residue, as found from TGA analysis. The highest decomposition temperature (281 degrees C) and the least char residue were found for a cross-linkable POSS, obtained by esterification of the hydroxyl groups with methacryloyl chloride.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Polyhedron
T1  - Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities
EP  - 304
SP  - 299
VL  - 171
DO  - 10.1016/j.poly.2019.06.059
ER  - 

@article{
author = "Tomić, Nataša Z. and Vuksanović, Marija M. and Djokić, Veljko and Mitrić, Miodrag and Simić, Milena R. and Pavlović, Vladimir and Jancić-Heinemann, Radmila and Marinković, Aleksandar D.",
year = "2019",
abstract = "A facile synthesis was employed for three polyhedral oligo silsequioxanes (POSS), obtaining incompletely condensed structures with fern-like and cubic morphologies. Proton nuclear magnetic resonance spectroscopy (H-1 NMR) indicated the successful synthesis of the proposed POSS structures. The hydroxyl groups affected the manner and type of POSS morphology, as seen under a scanning electron microscope (SEM) and a transmission electron microscope (TEM). Fourier-transform infrared spectroscopy (FTIR) showed the availability of surface hydroxyl groups that contributed to the formation of a higher amount of char residue, as found from TGA analysis. The highest decomposition temperature (281 degrees C) and the least char residue were found for a cross-linkable POSS, obtained by esterification of the hydroxyl groups with methacryloyl chloride.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Polyhedron",
title = "Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities",
pages = "304-299",
volume = "171",
doi = "10.1016/j.poly.2019.06.059"
}

Tomić, N. Z., Vuksanović, M. M., Djokić, V., Mitrić, M., Simić, M. R., Pavlović, V., Jancić-Heinemann, R.,& Marinković, A. D.. (2019). Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities. in Polyhedron
Pergamon-Elsevier Science Ltd, Oxford., 171, 299-304.
https://doi.org/10.1016/j.poly.2019.06.059

Tomić NZ, Vuksanović MM, Djokić V, Mitrić M, Simić MR, Pavlović V, Jancić-Heinemann R, Marinković AD. Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities. in Polyhedron. 2019;171:299-304.
doi:10.1016/j.poly.2019.06.059 .

Tomić, Nataša Z., Vuksanović, Marija M., Djokić, Veljko, Mitrić, Miodrag, Simić, Milena R., Pavlović, Vladimir, Jancić-Heinemann, Radmila, Marinković, Aleksandar D., "Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities" in Polyhedron, 171 (2019):299-304,
https://doi.org/10.1016/j.poly.2019.06.059 . .

TY  - JOUR
AU  - Tomić, Nataša Z.
AU  - Marinković, Aleksandar D.
AU  - Veljović, Djordje
AU  - Trifković, Kata
AU  - Lević, Steva
AU  - Radojević, Vesna
AU  - Jancić-Heinemann, Radmila
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4749
AB  - Mechanical, morphological and thermal properties of optical fiber adhesives, based on poly(ethylene-co-vinyl acetate) (EVA) with 18 and 40% of vinyl acetate, polymer blend of EVA/poly(methyl methacrylate) (PMMA), and graft polymer, raw EVA-g-PMMA, prepared via in situ free radical polymerization, were studied. Extraction of PMMA homopolymer from raw EVA-g-PMMA produced purified EVA-g-PMMA, which enable quantitative determination of graft initiating centers by NMR spectroscopy. FTIR and image analysis allowed determination of the graft content/level in purified EVA-g-PMMA. Grafting effect to compatibilization efficiency in EVA-g-PMMA was monitored by image analysis of gelation processes and determination of wetting angle. Single lap joint of adhesives/optical fibers were subjected to adhesive testing before and after aging on 60 degrees C for 60 h and 120 h. Thermogravimetry coupled with mass spectrometry showed different thermal stability and degradation pathways of adhesives, and reduced the degree of deacetylation of thermally treated EVA-g-PMMA adhesive. DSC analysis showed higher thermal stability of EVA-g-PMMA adhesive. Better mechanical properties of EVA-g-PMMA, i.e. 62.4% higher Charpy impact strength value in relation to EVA, was obtained.
PB  - Elsevier Sci Ltd, Oxford
T2  - International Journal of Adhesion and Adhesives
T1  - A new approach to compatibilization study of EVA/PMMA polymer blend used as an optical fibers adhesive: Mechanical, morphological and thermal properties
EP  - 20
SP  - 11
VL  - 81
DO  - 10.1016/j.ijadhadh.2017.11.002
ER  - 

@article{
author = "Tomić, Nataša Z. and Marinković, Aleksandar D. and Veljović, Djordje and Trifković, Kata and Lević, Steva and Radojević, Vesna and Jancić-Heinemann, Radmila",
year = "2018",
abstract = "Mechanical, morphological and thermal properties of optical fiber adhesives, based on poly(ethylene-co-vinyl acetate) (EVA) with 18 and 40% of vinyl acetate, polymer blend of EVA/poly(methyl methacrylate) (PMMA), and graft polymer, raw EVA-g-PMMA, prepared via in situ free radical polymerization, were studied. Extraction of PMMA homopolymer from raw EVA-g-PMMA produced purified EVA-g-PMMA, which enable quantitative determination of graft initiating centers by NMR spectroscopy. FTIR and image analysis allowed determination of the graft content/level in purified EVA-g-PMMA. Grafting effect to compatibilization efficiency in EVA-g-PMMA was monitored by image analysis of gelation processes and determination of wetting angle. Single lap joint of adhesives/optical fibers were subjected to adhesive testing before and after aging on 60 degrees C for 60 h and 120 h. Thermogravimetry coupled with mass spectrometry showed different thermal stability and degradation pathways of adhesives, and reduced the degree of deacetylation of thermally treated EVA-g-PMMA adhesive. DSC analysis showed higher thermal stability of EVA-g-PMMA adhesive. Better mechanical properties of EVA-g-PMMA, i.e. 62.4% higher Charpy impact strength value in relation to EVA, was obtained.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "International Journal of Adhesion and Adhesives",
title = "A new approach to compatibilization study of EVA/PMMA polymer blend used as an optical fibers adhesive: Mechanical, morphological and thermal properties",
pages = "20-11",
volume = "81",
doi = "10.1016/j.ijadhadh.2017.11.002"
}

Tomić, N. Z., Marinković, A. D., Veljović, D., Trifković, K., Lević, S., Radojević, V.,& Jancić-Heinemann, R.. (2018). A new approach to compatibilization study of EVA/PMMA polymer blend used as an optical fibers adhesive: Mechanical, morphological and thermal properties. in International Journal of Adhesion and Adhesives
Elsevier Sci Ltd, Oxford., 81, 11-20.
https://doi.org/10.1016/j.ijadhadh.2017.11.002

Tomić NZ, Marinković AD, Veljović D, Trifković K, Lević S, Radojević V, Jancić-Heinemann R. A new approach to compatibilization study of EVA/PMMA polymer blend used as an optical fibers adhesive: Mechanical, morphological and thermal properties. in International Journal of Adhesion and Adhesives. 2018;81:11-20.
doi:10.1016/j.ijadhadh.2017.11.002 .

Tomić, Nataša Z., Marinković, Aleksandar D., Veljović, Djordje, Trifković, Kata, Lević, Steva, Radojević, Vesna, Jancić-Heinemann, Radmila, "A new approach to compatibilization study of EVA/PMMA polymer blend used as an optical fibers adhesive: Mechanical, morphological and thermal properties" in International Journal of Adhesion and Adhesives, 81 (2018):11-20,
https://doi.org/10.1016/j.ijadhadh.2017.11.002 . .

TY  - JOUR
AU  - Zec, Jelena
AU  - Tomić, Nataša Z.
AU  - Zrilić, Milorad
AU  - Lević, Steva
AU  - Marinković, Aleksandar
AU  - Jancić-Heinemann, Radmila
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4694
AB  - Ultra-high molecular weight polyethylene (UHMWPE, PE)/oxidized PE (ox-PE) fibers and alumina reinforcement were used in preparation of poly (ethylene-co-vinyl acetate) (EVA)/hydrolyzed EVA (EVAOH) based composites. Different alumina particles were used: nanoparticles (n-Al2O3), whiskers (w-Al2O3), synthesized (mu-Al2O3) and the one doped with iron oxide (Fe-Al2O3). Modification of alumina with (3-glycidyloxypropyl)trimethoxysilane (GLYMO), without pretreatment (S) and subjected to hydrolysis (HS), produced Al2O3/S and Al2O3/HS particles. Optical microscopy was employed in determination of system compatibility. A high increase in tensile strength with 3% Fe-Al2O3/HS and n-Al2O3/HS was a result of improved Al2O3/matrix interfacial interactions in PE/EVAOH based composite.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties
EP  - 48
SP  - 36
VL  - 153
DO  - 10.1016/j.compositesb.2018.07.031
ER  - 

@article{
author = "Zec, Jelena and Tomić, Nataša Z. and Zrilić, Milorad and Lević, Steva and Marinković, Aleksandar and Jancić-Heinemann, Radmila",
year = "2018",
abstract = "Ultra-high molecular weight polyethylene (UHMWPE, PE)/oxidized PE (ox-PE) fibers and alumina reinforcement were used in preparation of poly (ethylene-co-vinyl acetate) (EVA)/hydrolyzed EVA (EVAOH) based composites. Different alumina particles were used: nanoparticles (n-Al2O3), whiskers (w-Al2O3), synthesized (mu-Al2O3) and the one doped with iron oxide (Fe-Al2O3). Modification of alumina with (3-glycidyloxypropyl)trimethoxysilane (GLYMO), without pretreatment (S) and subjected to hydrolysis (HS), produced Al2O3/S and Al2O3/HS particles. Optical microscopy was employed in determination of system compatibility. A high increase in tensile strength with 3% Fe-Al2O3/HS and n-Al2O3/HS was a result of improved Al2O3/matrix interfacial interactions in PE/EVAOH based composite.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties",
pages = "48-36",
volume = "153",
doi = "10.1016/j.compositesb.2018.07.031"
}

Zec, J., Tomić, N. Z., Zrilić, M., Lević, S., Marinković, A.,& Jancić-Heinemann, R.. (2018). Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 153, 36-48.
https://doi.org/10.1016/j.compositesb.2018.07.031

Zec J, Tomić NZ, Zrilić M, Lević S, Marinković A, Jancić-Heinemann R. Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties. in Composites Part B-Engineering. 2018;153:36-48.
doi:10.1016/j.compositesb.2018.07.031 .

Zec, Jelena, Tomić, Nataša Z., Zrilić, Milorad, Lević, Steva, Marinković, Aleksandar, Jancić-Heinemann, Radmila, "Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties" in Composites Part B-Engineering, 153 (2018):36-48,
https://doi.org/10.1016/j.compositesb.2018.07.031 . .

TY  - JOUR
AU  - Grković, Mirjana
AU  - Stojanović, Dušica B.
AU  - Pavlović, Vladimir
AU  - Rajilić-Stojanović, Mirjana
AU  - Bjelović, Milos
AU  - Uskoković, Petar S.
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4459
AB  - In this study conditions for green crosslinking with citric acid of chitosan/PEO (polyethylene oxide) nanofibers were evaluated. The thermal in situ crosslinking enabled penetration of crosslinking agent into the matrix providing an improvement of antibacterial activity, thermal stability and mechanical properties of the prepared material. With an increase of temperature above 80 degrees C antibacterial activity against Staphylococcus aureus and Escherichia coil, inversely decreased. Moreover crosslinking provided prolonged controlled drug release with outstanding increase of mechanical properties observed by nanoindentation measurements. Results of the investigation indicated crosslinking as an important parameter for producing material with multifunctional characteristics suitable for drug delivery and tissue engineering.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Improvement of mechanical properties and antibacterial activity of crosslinked electrospun chitosan/poly (ethylene oxide) nanofibers
EP  - 67
SP  - 58
VL  - 121
DO  - 10.1016/j.compositesb.2017.03.024
ER  - 

@article{
author = "Grković, Mirjana and Stojanović, Dušica B. and Pavlović, Vladimir and Rajilić-Stojanović, Mirjana and Bjelović, Milos and Uskoković, Petar S.",
year = "2017",
abstract = "In this study conditions for green crosslinking with citric acid of chitosan/PEO (polyethylene oxide) nanofibers were evaluated. The thermal in situ crosslinking enabled penetration of crosslinking agent into the matrix providing an improvement of antibacterial activity, thermal stability and mechanical properties of the prepared material. With an increase of temperature above 80 degrees C antibacterial activity against Staphylococcus aureus and Escherichia coil, inversely decreased. Moreover crosslinking provided prolonged controlled drug release with outstanding increase of mechanical properties observed by nanoindentation measurements. Results of the investigation indicated crosslinking as an important parameter for producing material with multifunctional characteristics suitable for drug delivery and tissue engineering.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Improvement of mechanical properties and antibacterial activity of crosslinked electrospun chitosan/poly (ethylene oxide) nanofibers",
pages = "67-58",
volume = "121",
doi = "10.1016/j.compositesb.2017.03.024"
}

Grković, M., Stojanović, D. B., Pavlović, V., Rajilić-Stojanović, M., Bjelović, M.,& Uskoković, P. S.. (2017). Improvement of mechanical properties and antibacterial activity of crosslinked electrospun chitosan/poly (ethylene oxide) nanofibers. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 121, 58-67.
https://doi.org/10.1016/j.compositesb.2017.03.024

Grković M, Stojanović DB, Pavlović V, Rajilić-Stojanović M, Bjelović M, Uskoković PS. Improvement of mechanical properties and antibacterial activity of crosslinked electrospun chitosan/poly (ethylene oxide) nanofibers. in Composites Part B-Engineering. 2017;121:58-67.
doi:10.1016/j.compositesb.2017.03.024 .

Grković, Mirjana, Stojanović, Dušica B., Pavlović, Vladimir, Rajilić-Stojanović, Mirjana, Bjelović, Milos, Uskoković, Petar S., "Improvement of mechanical properties and antibacterial activity of crosslinked electrospun chitosan/poly (ethylene oxide) nanofibers" in Composites Part B-Engineering, 121 (2017):58-67,
https://doi.org/10.1016/j.compositesb.2017.03.024 . .