TY  - CHAP
AU  - Simić, Danica M.
AU  - Stojanović, Dušica B.
AU  - Ristović, Novica
AU  - Zrilić, Milorad
AU  - Burzić, Zijah
AU  - Marjanović, Milica
AU  - Uskoković, Petar S.
AU  - Aleksić, Radoslav
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6672
AB  - This research considers a possibility of improving the impact and ballistic resistance of composite materials based on aramid fabric impregnated with poly (vinyl butyral), PVB, with the application of multi-layer inorganic nanotubes of tungsten disulfide (INT-WS2) as the reinforcement. Multi-layered nano-structures of tungsten disulfide are known by their excellent mechanical resistance, especially shock absorbing properties, which promote their use as a reinforcement in composite materials. INT-WS2 used in this research were observed using scanning electron microscope and the obtained images were analyzed in program Image Pro Plus. Before the application in the composite they were ultrasonically deagglomerated. Ballistic composites were prepared impregnating the aramid fabric with system PVB/INT-WS2 and by pressing defined number of layers under high pressure and defined temperature. Charpy impact test, ballistic shooting with two different ammunition calibers and stab resistance test with controlled knife penetration were performed on prepared composite samples, and resulted in significant improvements for samples with nano-reinforcement regarding the absorbed energy of impact, toughness and the ballistic resistance.
PB  - Springer Nature
T2  - Springer Proceedings in Materials. Advanced Materials for Defense: Development, Analysis and Applications
T1  - Ballistic Composites Reinforced with Inorganic Nanotubes of Tungsten Disulfide
EP  - 43
SP  - 35
VL  - 4
DO  - 10.1007/978-3-030-34123-7_4
ER  - 

@inbook{
author = "Simić, Danica M. and Stojanović, Dušica B. and Ristović, Novica and Zrilić, Milorad and Burzić, Zijah and Marjanović, Milica and Uskoković, Petar S. and Aleksić, Radoslav",
year = "2020",
abstract = "This research considers a possibility of improving the impact and ballistic resistance of composite materials based on aramid fabric impregnated with poly (vinyl butyral), PVB, with the application of multi-layer inorganic nanotubes of tungsten disulfide (INT-WS2) as the reinforcement. Multi-layered nano-structures of tungsten disulfide are known by their excellent mechanical resistance, especially shock absorbing properties, which promote their use as a reinforcement in composite materials. INT-WS2 used in this research were observed using scanning electron microscope and the obtained images were analyzed in program Image Pro Plus. Before the application in the composite they were ultrasonically deagglomerated. Ballistic composites were prepared impregnating the aramid fabric with system PVB/INT-WS2 and by pressing defined number of layers under high pressure and defined temperature. Charpy impact test, ballistic shooting with two different ammunition calibers and stab resistance test with controlled knife penetration were performed on prepared composite samples, and resulted in significant improvements for samples with nano-reinforcement regarding the absorbed energy of impact, toughness and the ballistic resistance.",
publisher = "Springer Nature",
journal = "Springer Proceedings in Materials. Advanced Materials for Defense: Development, Analysis and Applications",
booktitle = "Ballistic Composites Reinforced with Inorganic Nanotubes of Tungsten Disulfide",
pages = "43-35",
volume = "4",
doi = "10.1007/978-3-030-34123-7_4"
}

Simić, D. M., Stojanović, D. B., Ristović, N., Zrilić, M., Burzić, Z., Marjanović, M., Uskoković, P. S.,& Aleksić, R.. (2020). Ballistic Composites Reinforced with Inorganic Nanotubes of Tungsten Disulfide. in Springer Proceedings in Materials. Advanced Materials for Defense: Development, Analysis and Applications
Springer Nature., 4, 35-43.
https://doi.org/10.1007/978-3-030-34123-7_4

Simić DM, Stojanović DB, Ristović N, Zrilić M, Burzić Z, Marjanović M, Uskoković PS, Aleksić R. Ballistic Composites Reinforced with Inorganic Nanotubes of Tungsten Disulfide. in Springer Proceedings in Materials. Advanced Materials for Defense: Development, Analysis and Applications. 2020;4:35-43.
doi:10.1007/978-3-030-34123-7_4 .

Simić, Danica M., Stojanović, Dušica B., Ristović, Novica, Zrilić, Milorad, Burzić, Zijah, Marjanović, Milica, Uskoković, Petar S., Aleksić, Radoslav, "Ballistic Composites Reinforced with Inorganic Nanotubes of Tungsten Disulfide" in Springer Proceedings in Materials. Advanced Materials for Defense: Development, Analysis and Applications, 4 (2020):35-43,
https://doi.org/10.1007/978-3-030-34123-7_4 . .

TY  - CONF
AU  - Simić, Danica M.
AU  - Stojanović, Dušica B.
AU  - Ristović, Novica
AU  - Zrilić, Milorad
AU  - Burzić, Zijah
AU  - Marjanović, Milica
AU  - Uskoković, Petar S.
AU  - Aleksić, Radoslav
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6673
AB  - This research considers a possibility of improving the impact and ballistic resistance of composite materials based on aramid fabric impregnated with poly (vinyl butyral), PVB, with the application of multi-layer inorganic nanotubes of tungsten disulfide (INT-WS2) as the reinforcement. Charpy impact test, ballistic shooting and knife penetration test were performed and resulted in significant improvements for composite samples with nano-reinforcement.
PB  - TECMINHO - ASSOCIAÇÃO UNIVERSIDADE-EMPRESA PARA O DESENVOLVIMENTO
C3  - Book of Abstracts / AuxDefense 2018 - Proceedings of the 1st World Conference on Advanced Materials for Defense,  3-4 September 2018. Lisabon, Portugal
T1  - BALLISTIC COMPOSITES REINFORCED WITH INORGANIC NANOTUBES OF TUNGSTEN DISULFIDE
EP  - 210
SP  - 209
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6673
ER  - 

@conference{
author = "Simić, Danica M. and Stojanović, Dušica B. and Ristović, Novica and Zrilić, Milorad and Burzić, Zijah and Marjanović, Milica and Uskoković, Petar S. and Aleksić, Radoslav",
year = "2018",
abstract = "This research considers a possibility of improving the impact and ballistic resistance of composite materials based on aramid fabric impregnated with poly (vinyl butyral), PVB, with the application of multi-layer inorganic nanotubes of tungsten disulfide (INT-WS2) as the reinforcement. Charpy impact test, ballistic shooting and knife penetration test were performed and resulted in significant improvements for composite samples with nano-reinforcement.",
publisher = "TECMINHO - ASSOCIAÇÃO UNIVERSIDADE-EMPRESA PARA O DESENVOLVIMENTO",
journal = "Book of Abstracts / AuxDefense 2018 - Proceedings of the 1st World Conference on Advanced Materials for Defense,  3-4 September 2018. Lisabon, Portugal",
title = "BALLISTIC COMPOSITES REINFORCED WITH INORGANIC NANOTUBES OF TUNGSTEN DISULFIDE",
pages = "210-209",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6673"
}

Simić, D. M., Stojanović, D. B., Ristović, N., Zrilić, M., Burzić, Z., Marjanović, M., Uskoković, P. S.,& Aleksić, R.. (2018). BALLISTIC COMPOSITES REINFORCED WITH INORGANIC NANOTUBES OF TUNGSTEN DISULFIDE. in Book of Abstracts / AuxDefense 2018 - Proceedings of the 1st World Conference on Advanced Materials for Defense,  3-4 September 2018. Lisabon, Portugal
TECMINHO - ASSOCIAÇÃO UNIVERSIDADE-EMPRESA PARA O DESENVOLVIMENTO., 209-210.
https://hdl.handle.net/21.15107/rcub_technorep_6673

Simić DM, Stojanović DB, Ristović N, Zrilić M, Burzić Z, Marjanović M, Uskoković PS, Aleksić R. BALLISTIC COMPOSITES REINFORCED WITH INORGANIC NANOTUBES OF TUNGSTEN DISULFIDE. in Book of Abstracts / AuxDefense 2018 - Proceedings of the 1st World Conference on Advanced Materials for Defense,  3-4 September 2018. Lisabon, Portugal. 2018;:209-210.
https://hdl.handle.net/21.15107/rcub_technorep_6673 .

Simić, Danica M., Stojanović, Dušica B., Ristović, Novica, Zrilić, Milorad, Burzić, Zijah, Marjanović, Milica, Uskoković, Petar S., Aleksić, Radoslav, "BALLISTIC COMPOSITES REINFORCED WITH INORGANIC NANOTUBES OF TUNGSTEN DISULFIDE" in Book of Abstracts / AuxDefense 2018 - Proceedings of the 1st World Conference on Advanced Materials for Defense,  3-4 September 2018. Lisabon, Portugal (2018):209-210,
https://hdl.handle.net/21.15107/rcub_technorep_6673 .

TY  - JOUR
AU  - Radović, Ivana M.
AU  - Stojanović, Dušica
AU  - Kojović, Aleksandar
AU  - Petrović, Miloš
AU  - Uskoković, Petar
AU  - Radojević, Vesna
AU  - Aleksić, Radoslav
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3592
AB  - The study presents a novel method for the protection of Grubbs' catalyst, by incorporation in polystyrene fibres via electrospinning technique. Epoxy-glass fibre composite with embedded self-healing agents (polystyrene fibres with Grubbs' and microcapsules with dicyclopentadiene) was processed. Fibres retained pale purple colour during processing, revealing that fibres provided good protection of the catalyst from the amine hardener. The influence of self-healing agents' content and thermal treatment on self-healing efficiency was investigated. Fourier transform infrared spectroscopy revealed that a polydicyclopentadiene formed at the healed interface. Thermal analysis revealed that bleed' at the healing sites from different samples had similar concentration of polydicyclopentadiene, indicating that the same amount of the catalyst has been provided to dicyclopentadiene for polymerization. This finding lead to assumption that electrospun polymer fibres enabled good dispersion of the catalyst in the composites. The low energy impact tests of the samples showed a recovery of 90% after 24h at room temperature and up to 111% after repeated heating cycles.
PB  - Sage Publications Ltd, London
T2  - Journal of Composite Materials
T1  - Healing efficiency of polystyrene electrospun nanofibers with Grubbs' catalyst in thermosetting composite
EP  - 3016
IS  - 21
SP  - 3003
VL  - 51
DO  - 10.1177/0021998316681832
ER  - 

@article{
author = "Radović, Ivana M. and Stojanović, Dušica and Kojović, Aleksandar and Petrović, Miloš and Uskoković, Petar and Radojević, Vesna and Aleksić, Radoslav",
year = "2017",
abstract = "The study presents a novel method for the protection of Grubbs' catalyst, by incorporation in polystyrene fibres via electrospinning technique. Epoxy-glass fibre composite with embedded self-healing agents (polystyrene fibres with Grubbs' and microcapsules with dicyclopentadiene) was processed. Fibres retained pale purple colour during processing, revealing that fibres provided good protection of the catalyst from the amine hardener. The influence of self-healing agents' content and thermal treatment on self-healing efficiency was investigated. Fourier transform infrared spectroscopy revealed that a polydicyclopentadiene formed at the healed interface. Thermal analysis revealed that bleed' at the healing sites from different samples had similar concentration of polydicyclopentadiene, indicating that the same amount of the catalyst has been provided to dicyclopentadiene for polymerization. This finding lead to assumption that electrospun polymer fibres enabled good dispersion of the catalyst in the composites. The low energy impact tests of the samples showed a recovery of 90% after 24h at room temperature and up to 111% after repeated heating cycles.",
publisher = "Sage Publications Ltd, London",
journal = "Journal of Composite Materials",
title = "Healing efficiency of polystyrene electrospun nanofibers with Grubbs' catalyst in thermosetting composite",
pages = "3016-3003",
number = "21",
volume = "51",
doi = "10.1177/0021998316681832"
}

Radović, I. M., Stojanović, D., Kojović, A., Petrović, M., Uskoković, P., Radojević, V.,& Aleksić, R.. (2017). Healing efficiency of polystyrene electrospun nanofibers with Grubbs' catalyst in thermosetting composite. in Journal of Composite Materials
Sage Publications Ltd, London., 51(21), 3003-3016.
https://doi.org/10.1177/0021998316681832

Radović IM, Stojanović D, Kojović A, Petrović M, Uskoković P, Radojević V, Aleksić R. Healing efficiency of polystyrene electrospun nanofibers with Grubbs' catalyst in thermosetting composite. in Journal of Composite Materials. 2017;51(21):3003-3016.
doi:10.1177/0021998316681832 .

Radović, Ivana M., Stojanović, Dušica, Kojović, Aleksandar, Petrović, Miloš, Uskoković, Petar, Radojević, Vesna, Aleksić, Radoslav, "Healing efficiency of polystyrene electrospun nanofibers with Grubbs' catalyst in thermosetting composite" in Journal of Composite Materials, 51, no. 21 (2017):3003-3016,
https://doi.org/10.1177/0021998316681832 . .

TY  - JOUR
AU  - Radović, Ivana M.
AU  - Stojanović, Dušica
AU  - Kojović, Aleksandar
AU  - Petrović, Miloš
AU  - Uskoković, Petar
AU  - Radojević, Vesna
AU  - Aleksić, Radoslav
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3719
AB  - The study presents a novel method for protection of the first- and the second-generation Grubbs' catalyst, by incorporation in poly(styrene) fibers through electrospinning technique. Both catalysts are sensitive to the presence of the amine hardeners in the epoxy-based self-healing composites and require protection from deactivation to retain their ability to promote polymerization reaction of the healing agent. Comparison of healing efficiencies of both catalysts suggested that poly(styrene) fibers offer better protection and dispersion for the first-generation Grubbs' catalyst, although all the samples exhibited high-healing efficiency. Difference in stereoselectivity between two catalysts was also indicated. [GRAPHICS] .
PB  - Taylor & Francis Inc, Philadelphia
T2  - Polymer-Plastics Technology and Engineering
T1  - Electrospun Poly(styrene) Fibers as a Protection for the First- and the Second-Generation Grubbs' Catalyst
EP  - 1195
IS  - 11
SP  - 1188
VL  - 56
DO  - 10.1080/03602559.2016.1260734
ER  - 

@article{
author = "Radović, Ivana M. and Stojanović, Dušica and Kojović, Aleksandar and Petrović, Miloš and Uskoković, Petar and Radojević, Vesna and Aleksić, Radoslav",
year = "2017",
abstract = "The study presents a novel method for protection of the first- and the second-generation Grubbs' catalyst, by incorporation in poly(styrene) fibers through electrospinning technique. Both catalysts are sensitive to the presence of the amine hardeners in the epoxy-based self-healing composites and require protection from deactivation to retain their ability to promote polymerization reaction of the healing agent. Comparison of healing efficiencies of both catalysts suggested that poly(styrene) fibers offer better protection and dispersion for the first-generation Grubbs' catalyst, although all the samples exhibited high-healing efficiency. Difference in stereoselectivity between two catalysts was also indicated. [GRAPHICS] .",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Polymer-Plastics Technology and Engineering",
title = "Electrospun Poly(styrene) Fibers as a Protection for the First- and the Second-Generation Grubbs' Catalyst",
pages = "1195-1188",
number = "11",
volume = "56",
doi = "10.1080/03602559.2016.1260734"
}

Radović, I. M., Stojanović, D., Kojović, A., Petrović, M., Uskoković, P., Radojević, V.,& Aleksić, R.. (2017). Electrospun Poly(styrene) Fibers as a Protection for the First- and the Second-Generation Grubbs' Catalyst. in Polymer-Plastics Technology and Engineering
Taylor & Francis Inc, Philadelphia., 56(11), 1188-1195.
https://doi.org/10.1080/03602559.2016.1260734

Radović IM, Stojanović D, Kojović A, Petrović M, Uskoković P, Radojević V, Aleksić R. Electrospun Poly(styrene) Fibers as a Protection for the First- and the Second-Generation Grubbs' Catalyst. in Polymer-Plastics Technology and Engineering. 2017;56(11):1188-1195.
doi:10.1080/03602559.2016.1260734 .

Radović, Ivana M., Stojanović, Dušica, Kojović, Aleksandar, Petrović, Miloš, Uskoković, Petar, Radojević, Vesna, Aleksić, Radoslav, "Electrospun Poly(styrene) Fibers as a Protection for the First- and the Second-Generation Grubbs' Catalyst" in Polymer-Plastics Technology and Engineering, 56, no. 11 (2017):1188-1195,
https://doi.org/10.1080/03602559.2016.1260734 . .

TY  - JOUR
AU  - Obradović, Vera
AU  - Stojanović, Dušica
AU  - Jokić, Bojan
AU  - Zrilić, Milorad
AU  - Radojević, Vesna
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3662
AB  - In this study carbon nanotubes (CNT) and silica nanoparticles (SiO2) were added to enhance the dynamic mechanical and anti-stabbing properties of the polyurethaneip-aramid multiaxial fabric (Kolon fabric) composites for ballistic protection. The SiO2 were modified (mSiO(2)) and CNT were oxidised (o-CNT) in order to fabricate o-CNT/mSiO(2) hybrid nanoparticles. Various kinds of nanoreinforcement particles were added into poly (vinyl butyral) (PVB)/ethanol solution. The results revealed that the films PVB/oMWCNT/mSiO(2) and PVB/o-SWCNT/mSiO(2) yielded 101% and 141% improvement in indentation hardness together with 89% and 117% improvement in reduced elastic modulus, respectively, compared to the neat PVB film. The experiments demonstrated that the Kolon/PVB/o-SWCNT/mSiO(2) fabric sample yielded 35% improvement in absorbed energy and 50% improvement in the storage modulus compared to the Kolon/PVB sample.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Nanomechanical and anti-stabbing properties of Kolon fabric composites reinforced with hybrid nanoparticles
EP  - 152
SP  - 143
VL  - 108
DO  - 10.1016/j.compositesb.2016.09.095
ER  - 

@article{
author = "Obradović, Vera and Stojanović, Dušica and Jokić, Bojan and Zrilić, Milorad and Radojević, Vesna and Uskoković, Petar and Aleksić, Radoslav",
year = "2017",
abstract = "In this study carbon nanotubes (CNT) and silica nanoparticles (SiO2) were added to enhance the dynamic mechanical and anti-stabbing properties of the polyurethaneip-aramid multiaxial fabric (Kolon fabric) composites for ballistic protection. The SiO2 were modified (mSiO(2)) and CNT were oxidised (o-CNT) in order to fabricate o-CNT/mSiO(2) hybrid nanoparticles. Various kinds of nanoreinforcement particles were added into poly (vinyl butyral) (PVB)/ethanol solution. The results revealed that the films PVB/oMWCNT/mSiO(2) and PVB/o-SWCNT/mSiO(2) yielded 101% and 141% improvement in indentation hardness together with 89% and 117% improvement in reduced elastic modulus, respectively, compared to the neat PVB film. The experiments demonstrated that the Kolon/PVB/o-SWCNT/mSiO(2) fabric sample yielded 35% improvement in absorbed energy and 50% improvement in the storage modulus compared to the Kolon/PVB sample.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Nanomechanical and anti-stabbing properties of Kolon fabric composites reinforced with hybrid nanoparticles",
pages = "152-143",
volume = "108",
doi = "10.1016/j.compositesb.2016.09.095"
}

Obradović, V., Stojanović, D., Jokić, B., Zrilić, M., Radojević, V., Uskoković, P.,& Aleksić, R.. (2017). Nanomechanical and anti-stabbing properties of Kolon fabric composites reinforced with hybrid nanoparticles. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 108, 143-152.
https://doi.org/10.1016/j.compositesb.2016.09.095

Obradović V, Stojanović D, Jokić B, Zrilić M, Radojević V, Uskoković P, Aleksić R. Nanomechanical and anti-stabbing properties of Kolon fabric composites reinforced with hybrid nanoparticles. in Composites Part B-Engineering. 2017;108:143-152.
doi:10.1016/j.compositesb.2016.09.095 .

Obradović, Vera, Stojanović, Dušica, Jokić, Bojan, Zrilić, Milorad, Radojević, Vesna, Uskoković, Petar, Aleksić, Radoslav, "Nanomechanical and anti-stabbing properties of Kolon fabric composites reinforced with hybrid nanoparticles" in Composites Part B-Engineering, 108 (2017):143-152,
https://doi.org/10.1016/j.compositesb.2016.09.095 . .

TY  - JOUR
AU  - Simić, Danica
AU  - Stojanović, Dušica
AU  - Brzić, Sasa J.
AU  - Totovski, Ljubica
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3565
AB  - Combination of phenolic resin with poly (vinyl butyral), PVB, is often used as impregnation of aramid fabrics in prepregs for the ballistic protection products. In this study an effect of inorganic fullerene-like tungsten disulfide nanoparticles (IF-WS2) in aramid/phenolic resin/PVB composite for improving its viscoelastic and mechanical properties is examined. The effect of IF-WS2 on mechanical properties improvement was first proved by nanoindentation on thin film samples PVB/IF-WS2. The quality of aramid fabrics impregnation with PVB/phenolic resin/IF-WS2, and the nanoparticles dispersion were analyzed by scanning electron microscope with energy dispersive spectrometer. Viscoelastic properties of the composites were examined by dynamic mechanical thermal analysis, observing the storage and loss modulus, mechanical loss factor and glass transition temperature versus temperature and frequency. Time-temperature superposition principle was applied for the construction of master curves. IF-WS2 causes increase of glass transition temperature and improvement in mechanical properties of examined composites.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Aramid hybrid composite laminates reinforced with inorganic fullerene-like tungsten disulfide nanoparticles
EP  - 18
SP  - 10
VL  - 123
DO  - 10.1016/j.compositesb.2017.05.002
ER  - 

@article{
author = "Simić, Danica and Stojanović, Dušica and Brzić, Sasa J. and Totovski, Ljubica and Uskoković, Petar and Aleksić, Radoslav",
year = "2017",
abstract = "Combination of phenolic resin with poly (vinyl butyral), PVB, is often used as impregnation of aramid fabrics in prepregs for the ballistic protection products. In this study an effect of inorganic fullerene-like tungsten disulfide nanoparticles (IF-WS2) in aramid/phenolic resin/PVB composite for improving its viscoelastic and mechanical properties is examined. The effect of IF-WS2 on mechanical properties improvement was first proved by nanoindentation on thin film samples PVB/IF-WS2. The quality of aramid fabrics impregnation with PVB/phenolic resin/IF-WS2, and the nanoparticles dispersion were analyzed by scanning electron microscope with energy dispersive spectrometer. Viscoelastic properties of the composites were examined by dynamic mechanical thermal analysis, observing the storage and loss modulus, mechanical loss factor and glass transition temperature versus temperature and frequency. Time-temperature superposition principle was applied for the construction of master curves. IF-WS2 causes increase of glass transition temperature and improvement in mechanical properties of examined composites.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Aramid hybrid composite laminates reinforced with inorganic fullerene-like tungsten disulfide nanoparticles",
pages = "18-10",
volume = "123",
doi = "10.1016/j.compositesb.2017.05.002"
}

Simić, D., Stojanović, D., Brzić, S. J., Totovski, L., Uskoković, P.,& Aleksić, R.. (2017). Aramid hybrid composite laminates reinforced with inorganic fullerene-like tungsten disulfide nanoparticles. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 123, 10-18.
https://doi.org/10.1016/j.compositesb.2017.05.002

Simić D, Stojanović D, Brzić SJ, Totovski L, Uskoković P, Aleksić R. Aramid hybrid composite laminates reinforced with inorganic fullerene-like tungsten disulfide nanoparticles. in Composites Part B-Engineering. 2017;123:10-18.
doi:10.1016/j.compositesb.2017.05.002 .

Simić, Danica, Stojanović, Dušica, Brzić, Sasa J., Totovski, Ljubica, Uskoković, Petar, Aleksić, Radoslav, "Aramid hybrid composite laminates reinforced with inorganic fullerene-like tungsten disulfide nanoparticles" in Composites Part B-Engineering, 123 (2017):10-18,
https://doi.org/10.1016/j.compositesb.2017.05.002 . .

TY  - JOUR
AU  - Yerro, Omar
AU  - Radojević, Vesna
AU  - Radović, Ivana
AU  - Petrović, Miloš
AU  - Uskoković, Petar
AU  - Stojanović, Dušica
AU  - Aleksić, Radoslav
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3452
AB  - This article presents a novel processing method of a self-healing acrylic thermoplastic material starting from a healing agent in solution form. The self-healing system consisted of a solution of the healing agent dicyclopentadiene (DCPD) in dimethylformamide (DMF) and a solution of the catalyst bis(tricyclohexylphosphine) benzylidene ruthenium (IV) dichloride (called Grubbs' catalyst) in dichloromethane (DCM). Hollow glass tubes filled with the self-healing components were incorporated into autopolymerizing acrylic resins. The one set of tubes was filled with a solution of DCPD (containing the dye Rhodamine B as a marker) and the other set with a solution of Grubbs' catalyst in dichloromethane. FTIR and DSC analyses revealed that a poly(DCPD) film formed at the healed interface. The low energy impact tests of the samples showed a recovery of 83% after 4 days. The benefits of the Grubb's catalyst solution are twofold; besides the repair of the cracks, which is common for such a system, the reaction could decrease the content of residual monomer in the acrylic resin, which could reduce diffusion of residual monomer out of the resins. POLYM. ENG. SCI., 56:251-257, 2016.
PB  - Wiley, Hoboken
T2  - Polymer Engineering and Science
T1  - Thermoplastic acrylic resin with self-healing properties
EP  - 257
IS  - 3
SP  - 251
VL  - 56
DO  - 10.1002/pen.24244
ER  - 

@article{
author = "Yerro, Omar and Radojević, Vesna and Radović, Ivana and Petrović, Miloš and Uskoković, Petar and Stojanović, Dušica and Aleksić, Radoslav",
year = "2016",
abstract = "This article presents a novel processing method of a self-healing acrylic thermoplastic material starting from a healing agent in solution form. The self-healing system consisted of a solution of the healing agent dicyclopentadiene (DCPD) in dimethylformamide (DMF) and a solution of the catalyst bis(tricyclohexylphosphine) benzylidene ruthenium (IV) dichloride (called Grubbs' catalyst) in dichloromethane (DCM). Hollow glass tubes filled with the self-healing components were incorporated into autopolymerizing acrylic resins. The one set of tubes was filled with a solution of DCPD (containing the dye Rhodamine B as a marker) and the other set with a solution of Grubbs' catalyst in dichloromethane. FTIR and DSC analyses revealed that a poly(DCPD) film formed at the healed interface. The low energy impact tests of the samples showed a recovery of 83% after 4 days. The benefits of the Grubb's catalyst solution are twofold; besides the repair of the cracks, which is common for such a system, the reaction could decrease the content of residual monomer in the acrylic resin, which could reduce diffusion of residual monomer out of the resins. POLYM. ENG. SCI., 56:251-257, 2016.",
publisher = "Wiley, Hoboken",
journal = "Polymer Engineering and Science",
title = "Thermoplastic acrylic resin with self-healing properties",
pages = "257-251",
number = "3",
volume = "56",
doi = "10.1002/pen.24244"
}

Yerro, O., Radojević, V., Radović, I., Petrović, M., Uskoković, P., Stojanović, D.,& Aleksić, R.. (2016). Thermoplastic acrylic resin with self-healing properties. in Polymer Engineering and Science
Wiley, Hoboken., 56(3), 251-257.
https://doi.org/10.1002/pen.24244

Yerro O, Radojević V, Radović I, Petrović M, Uskoković P, Stojanović D, Aleksić R. Thermoplastic acrylic resin with self-healing properties. in Polymer Engineering and Science. 2016;56(3):251-257.
doi:10.1002/pen.24244 .

Yerro, Omar, Radojević, Vesna, Radović, Ivana, Petrović, Miloš, Uskoković, Petar, Stojanović, Dušica, Aleksić, Radoslav, "Thermoplastic acrylic resin with self-healing properties" in Polymer Engineering and Science, 56, no. 3 (2016):251-257,
https://doi.org/10.1002/pen.24244 . .

TY  - JOUR
AU  - Tomić, Nataša
AU  - Međo, Bojan
AU  - Stojanović, Dušica
AU  - Radojević, Vesna
AU  - Rakin, Marko
AU  - Jančić-Heinemann, Radmila
AU  - Aleksić, Radoslav
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3267
AB  - Optical fibers are transported on a drum and on some occasions it is essential to fix them and to keep them fixed to the drum. Adhesives are used in such situations to obtain the best and durable fixation. This research shows a new approach for the examination of the adhesion effects and forces between the optical fibers and the adhesive during a tensile test. A solution of ethylene-vinyl acetate (EVA) copolymer in toluene was used as the adhesive for optical fibers and applied using specially designed apparatus. The testing procedure consisted of optical fiber characterization using optical microscopy for measurement of geomertrical parameters; tensile test to obtain the strength of adhesion that keeps the fibers together; nanoindentation of the optical final layer; SEM for precise geometry measurements and insight in the adhesive aspect after the test, and FOR analysis to find out the chemical composition of polymer protective coating to have an obtain information about chemical environment for the adhesive. The optical fiber with outstanding mechanical characteristics was used to examine adhesives. A sample of two fibers connected with EVA was subjected to the tensile test to examine the adhesion forces. Finite element modeling was used to simulate the behavior and stress distribution of the adhesion layer. This method could assist in reaching a conclusion about the quality of the adhesion obtained in an experimental procedure.
PB  - Elsevier Sci Ltd, Oxford
T2  - International Journal of Adhesion and Adhesives
T1  - A rapid test to measure adhesion between optical fibers and ethylene-vinyl acetate copolymer (EVA)
EP  - 350
SP  - 341
VL  - 68
DO  - 10.1016/j.ijadhadh.2016.04.012
ER  - 

@article{
author = "Tomić, Nataša and Međo, Bojan and Stojanović, Dušica and Radojević, Vesna and Rakin, Marko and Jančić-Heinemann, Radmila and Aleksić, Radoslav",
year = "2016",
abstract = "Optical fibers are transported on a drum and on some occasions it is essential to fix them and to keep them fixed to the drum. Adhesives are used in such situations to obtain the best and durable fixation. This research shows a new approach for the examination of the adhesion effects and forces between the optical fibers and the adhesive during a tensile test. A solution of ethylene-vinyl acetate (EVA) copolymer in toluene was used as the adhesive for optical fibers and applied using specially designed apparatus. The testing procedure consisted of optical fiber characterization using optical microscopy for measurement of geomertrical parameters; tensile test to obtain the strength of adhesion that keeps the fibers together; nanoindentation of the optical final layer; SEM for precise geometry measurements and insight in the adhesive aspect after the test, and FOR analysis to find out the chemical composition of polymer protective coating to have an obtain information about chemical environment for the adhesive. The optical fiber with outstanding mechanical characteristics was used to examine adhesives. A sample of two fibers connected with EVA was subjected to the tensile test to examine the adhesion forces. Finite element modeling was used to simulate the behavior and stress distribution of the adhesion layer. This method could assist in reaching a conclusion about the quality of the adhesion obtained in an experimental procedure.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "International Journal of Adhesion and Adhesives",
title = "A rapid test to measure adhesion between optical fibers and ethylene-vinyl acetate copolymer (EVA)",
pages = "350-341",
volume = "68",
doi = "10.1016/j.ijadhadh.2016.04.012"
}

Tomić, N., Međo, B., Stojanović, D., Radojević, V., Rakin, M., Jančić-Heinemann, R.,& Aleksić, R.. (2016). A rapid test to measure adhesion between optical fibers and ethylene-vinyl acetate copolymer (EVA). in International Journal of Adhesion and Adhesives
Elsevier Sci Ltd, Oxford., 68, 341-350.
https://doi.org/10.1016/j.ijadhadh.2016.04.012

Tomić N, Međo B, Stojanović D, Radojević V, Rakin M, Jančić-Heinemann R, Aleksić R. A rapid test to measure adhesion between optical fibers and ethylene-vinyl acetate copolymer (EVA). in International Journal of Adhesion and Adhesives. 2016;68:341-350.
doi:10.1016/j.ijadhadh.2016.04.012 .

Tomić, Nataša, Međo, Bojan, Stojanović, Dušica, Radojević, Vesna, Rakin, Marko, Jančić-Heinemann, Radmila, Aleksić, Radoslav, "A rapid test to measure adhesion between optical fibers and ethylene-vinyl acetate copolymer (EVA)" in International Journal of Adhesion and Adhesives, 68 (2016):341-350,
https://doi.org/10.1016/j.ijadhadh.2016.04.012 . .

TY  - JOUR
AU  - Simić, Danica
AU  - Stojanović, Dušica
AU  - Dimić, Mirjana
AU  - Totovski, Ljubica
AU  - Brzić, Saša
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3196
AB  - A possibility of using inorganic fullerene-like tungsten disulfide, IF-WS2, nanoparticles as a filler in poly (vinyl butyral), PVB, for improving its thermal and rheological properties is examined. PVB is a thermoplastic polymer with excellent properties, widely used: in ballistic protection, for protection of safety glass, in metal primers and coatings, temporary binders. Two different molecular weights of PVB were previously examined in this research: Mowital B60H and B75H. Both grades of PVB were dissolved in different solvents: ethanol and 2-propanol. Thin films were prepared by solvent casting technique. The glass transition temperature (Tg) of the tested samples was determined using differential scanning calorimetry (DSC), at three different heating rates (5°C/min, 10°C/min and 20°C/min). After choosing a solvent and PVB grade, IF-WS2 nanoparticles were added to PVB solutions and dispersed by ultrasonic irradiation. Compatibility, i.e. interaction of IF-WS2 with the dissolved PVB was examined by microcalorimetry method. The nanoparticles dispersion and deagglomeration in matrix of PVB was analyzed by scanning electron microscope (SEM). The effect of IF-WS2 on rheological properties of the chosen samples has been examined using Dynamic Mechanical Thermal Analysis (DMTA), observing storage modulus, loss modulus and the loss factor as functions of temperature for the tested composites.
AB  - Ispitana je mogućnost upotrebe fulerenskih nanočestica volfram disulfida, IF-WS2 kao punioca poli (vinil butirala), PVB, radi poboljšanja termalnih i reoloških svojstava. PVB je termoplastični polimer sa odličnim karakteristikama, široke primene: u balističkoj zaštiti, za zaštitu sigurnosnih stakala, u metalnim prajmerima i premazima, itd. U ovom istraživanju najpre su ispitane dve različite molekulske mase PVB: Mowital B60H i B75H. Rastvoreni su u različitim rastvaračima: etanol i 2- propanol. Uzorci u vidu tankih filmova su pripremljeni i temperatura ostakljivanja je određena korišćenjem diferencijalne skenirajuće kalorimetrije na tri različite brzine zagrevanja (5°C/min, 10°C/min i 20°C/min). Nakon izbora optimalnog rastvarača i molekulske mase PVB, IF-WS2 nanočestice su dodate u rastvor PVB i ultrazvučno dispergovane. Kompatibilnost, odnosno interakcija IF-WS2 sa rastvorenim PVB je ispitana metodom mikrokalorimetrije. Deaglomeracija nanočestica i disperzija u matrici PVB su analizirane pomoću skenirajućeg elektronskog mikroskopa. Efekat dodavanja IF-WS2 na reološka svojstva odabranih uzoraka je ispitana korišćenjem dinamičko-mehaničko-termičke analize (DMTA), posmatrajući modul sačuvane energije, modul gubitaka i mehanički faktor gubitaka kao funkcije temperature za ispitne kompozite.
PB  - Military Technical Institute, Belgrade
T2  - Scientific Technical Review
T1  - Preliminary analysis of the possibility of preparing PVB/IF-WS2 composites. Effect of nanoparticles addition on thermal and rheological behavior of PVB
T1  - Predvaritel'nyj analiz vozmožnosti podgotovki kompozitov PVB / IF- WS2 i ëffekty vlijanija dobavki nanočastic na termičeskoe i reologičeskoe povedenija PVB / (francuski) Analyse préliminaire de la possibilité de préparation des composites PVB/IF-WS2 et effet de l'addition des nano particules sur le comportement thermique et rhéologique de PVB
T1  - Preliminarna analiza mogućnosti izrade kompozita PVB/IF-WS2 i efekat dodataka nanočestica na termičko i reološko ponašanje PVB
EP  - 21
IS  - 4
SP  - 15
VL  - 66
DO  - 10.5937/STR1604015S
ER  - 

@article{
author = "Simić, Danica and Stojanović, Dušica and Dimić, Mirjana and Totovski, Ljubica and Brzić, Saša and Uskoković, Petar and Aleksić, Radoslav",
year = "2016",
abstract = "A possibility of using inorganic fullerene-like tungsten disulfide, IF-WS2, nanoparticles as a filler in poly (vinyl butyral), PVB, for improving its thermal and rheological properties is examined. PVB is a thermoplastic polymer with excellent properties, widely used: in ballistic protection, for protection of safety glass, in metal primers and coatings, temporary binders. Two different molecular weights of PVB were previously examined in this research: Mowital B60H and B75H. Both grades of PVB were dissolved in different solvents: ethanol and 2-propanol. Thin films were prepared by solvent casting technique. The glass transition temperature (Tg) of the tested samples was determined using differential scanning calorimetry (DSC), at three different heating rates (5°C/min, 10°C/min and 20°C/min). After choosing a solvent and PVB grade, IF-WS2 nanoparticles were added to PVB solutions and dispersed by ultrasonic irradiation. Compatibility, i.e. interaction of IF-WS2 with the dissolved PVB was examined by microcalorimetry method. The nanoparticles dispersion and deagglomeration in matrix of PVB was analyzed by scanning electron microscope (SEM). The effect of IF-WS2 on rheological properties of the chosen samples has been examined using Dynamic Mechanical Thermal Analysis (DMTA), observing storage modulus, loss modulus and the loss factor as functions of temperature for the tested composites., Ispitana je mogućnost upotrebe fulerenskih nanočestica volfram disulfida, IF-WS2 kao punioca poli (vinil butirala), PVB, radi poboljšanja termalnih i reoloških svojstava. PVB je termoplastični polimer sa odličnim karakteristikama, široke primene: u balističkoj zaštiti, za zaštitu sigurnosnih stakala, u metalnim prajmerima i premazima, itd. U ovom istraživanju najpre su ispitane dve različite molekulske mase PVB: Mowital B60H i B75H. Rastvoreni su u različitim rastvaračima: etanol i 2- propanol. Uzorci u vidu tankih filmova su pripremljeni i temperatura ostakljivanja je određena korišćenjem diferencijalne skenirajuće kalorimetrije na tri različite brzine zagrevanja (5°C/min, 10°C/min i 20°C/min). Nakon izbora optimalnog rastvarača i molekulske mase PVB, IF-WS2 nanočestice su dodate u rastvor PVB i ultrazvučno dispergovane. Kompatibilnost, odnosno interakcija IF-WS2 sa rastvorenim PVB je ispitana metodom mikrokalorimetrije. Deaglomeracija nanočestica i disperzija u matrici PVB su analizirane pomoću skenirajućeg elektronskog mikroskopa. Efekat dodavanja IF-WS2 na reološka svojstva odabranih uzoraka je ispitana korišćenjem dinamičko-mehaničko-termičke analize (DMTA), posmatrajući modul sačuvane energije, modul gubitaka i mehanički faktor gubitaka kao funkcije temperature za ispitne kompozite.",
publisher = "Military Technical Institute, Belgrade",
journal = "Scientific Technical Review",
title = "Preliminary analysis of the possibility of preparing PVB/IF-WS2 composites. Effect of nanoparticles addition on thermal and rheological behavior of PVB, Predvaritel'nyj analiz vozmožnosti podgotovki kompozitov PVB / IF- WS2 i ëffekty vlijanija dobavki nanočastic na termičeskoe i reologičeskoe povedenija PVB / (francuski) Analyse préliminaire de la possibilité de préparation des composites PVB/IF-WS2 et effet de l'addition des nano particules sur le comportement thermique et rhéologique de PVB, Preliminarna analiza mogućnosti izrade kompozita PVB/IF-WS2 i efekat dodataka nanočestica na termičko i reološko ponašanje PVB",
pages = "21-15",
number = "4",
volume = "66",
doi = "10.5937/STR1604015S"
}

Simić, D., Stojanović, D., Dimić, M., Totovski, L., Brzić, S., Uskoković, P.,& Aleksić, R.. (2016). Preliminary analysis of the possibility of preparing PVB/IF-WS2 composites. Effect of nanoparticles addition on thermal and rheological behavior of PVB. in Scientific Technical Review
Military Technical Institute, Belgrade., 66(4), 15-21.
https://doi.org/10.5937/STR1604015S

Simić D, Stojanović D, Dimić M, Totovski L, Brzić S, Uskoković P, Aleksić R. Preliminary analysis of the possibility of preparing PVB/IF-WS2 composites. Effect of nanoparticles addition on thermal and rheological behavior of PVB. in Scientific Technical Review. 2016;66(4):15-21.
doi:10.5937/STR1604015S .

Simić, Danica, Stojanović, Dušica, Dimić, Mirjana, Totovski, Ljubica, Brzić, Saša, Uskoković, Petar, Aleksić, Radoslav, "Preliminary analysis of the possibility of preparing PVB/IF-WS2 composites. Effect of nanoparticles addition on thermal and rheological behavior of PVB" in Scientific Technical Review, 66, no. 4 (2016):15-21,
https://doi.org/10.5937/STR1604015S . .

TY  - JOUR
AU  - Yerro, Omar
AU  - Radojević, Vesna
AU  - Radović, Ivana
AU  - Kojović, Aleksandar
AU  - Uskoković, Petar
AU  - Stojanović, Dušica
AU  - Aleksić, Radoslav
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3247
AB  - The acrylic resin reinforced with silanized alumina whiskers with self-healing (SH) agents was synthesized. The self-healing system consisted of microcapsules with the healing agent dicyclopentadiene (DCPD) and modified Grubbs' catalyst in PS electrospun nanofibers. The content of alumina whiskers was 3% w/w, and the concentration of PS fibers and OF microcapsules in the samples were 1% wow each. The embedded silanized alumina whiskers achieved higher T-g and absorbed impact energy in relation to unmodified alumina whiskers. The nanoindentation test revealed the reduced modulus increased for about 65% and hardness increased is about 90% for composites with silanized whiskers. Cracks were induced on the composite surface using the low energy impact test machine. The self-healing efficiency of 74% was approved by the repeated impact test after 96 h.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers
EP  - 10786
IS  - 9
SP  - 10779
VL  - 42
DO  - 10.1016/j.ceramint.2016.03.205
ER  - 

@article{
author = "Yerro, Omar and Radojević, Vesna and Radović, Ivana and Kojović, Aleksandar and Uskoković, Petar and Stojanović, Dušica and Aleksić, Radoslav",
year = "2016",
abstract = "The acrylic resin reinforced with silanized alumina whiskers with self-healing (SH) agents was synthesized. The self-healing system consisted of microcapsules with the healing agent dicyclopentadiene (DCPD) and modified Grubbs' catalyst in PS electrospun nanofibers. The content of alumina whiskers was 3% w/w, and the concentration of PS fibers and OF microcapsules in the samples were 1% wow each. The embedded silanized alumina whiskers achieved higher T-g and absorbed impact energy in relation to unmodified alumina whiskers. The nanoindentation test revealed the reduced modulus increased for about 65% and hardness increased is about 90% for composites with silanized whiskers. Cracks were induced on the composite surface using the low energy impact test machine. The self-healing efficiency of 74% was approved by the repeated impact test after 96 h.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers",
pages = "10786-10779",
number = "9",
volume = "42",
doi = "10.1016/j.ceramint.2016.03.205"
}

Yerro, O., Radojević, V., Radović, I., Kojović, A., Uskoković, P., Stojanović, D.,& Aleksić, R.. (2016). Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers. in Ceramics International
Elsevier Sci Ltd, Oxford., 42(9), 10779-10786.
https://doi.org/10.1016/j.ceramint.2016.03.205

Yerro O, Radojević V, Radović I, Kojović A, Uskoković P, Stojanović D, Aleksić R. Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers. in Ceramics International. 2016;42(9):10779-10786.
doi:10.1016/j.ceramint.2016.03.205 .

Yerro, Omar, Radojević, Vesna, Radović, Ivana, Kojović, Aleksandar, Uskoković, Petar, Stojanović, Dušica, Aleksić, Radoslav, "Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers" in Ceramics International, 42, no. 9 (2016):10779-10786,
https://doi.org/10.1016/j.ceramint.2016.03.205 . .

TY  - JOUR
AU  - Simić, Danica
AU  - Stojanović, Dušica
AU  - Kojović, Aleksandar
AU  - Dimić, Mirjana
AU  - Totovski, Ljubica
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3301
AB  - The subject of this research is to explore the possibility of preparation of nanocomposite material of improved thermo-mechanical and tribological properties, using inorganic fullerene-like tungsten disulfide nanostructures (IF-WS2) as reinforcement in poly(vinyl butyral) (PVB). This paper also reports investigation of the effects of using different solvents in preparation of PVB/IF-WS2 nanocomposite on the thermo-mechanical behavior of the resulting material. PVB was dissolved in ethanol, isopropanol, n-butanol and ethyl acetate. IF-WS2 nanoparticles were added to these PVB solutions and dispersed by different deagglomeration techniques. Samples were dried and thin films were obtained. Their microstructure and the quality of IF-WS2 dispersion and deagglomeration in PVE matrix was analyzed by scanning electron microscope (SEM). The reinforcing effect of IF-WS2 is examined by determining hardness, reduced modulus of elasticity and coefficient of friction, by nanoindentation and nanoscratch test, in terms of the different solvents applied in preparation of the samples, mode of stirring and different contents of IF-WS2. The glass transition temperature (T-g) was determined for the prepared samples using differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMA). Storage modulus and mechanical loss factor were observed in a defined temperature range using DMA.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Inorganic fullerene-like IF-WS2/PVB nanocomposites of improved thermo-mechanical and tribological properties
EP  - 344
SP  - 335
VL  - 184
DO  - 10.1016/j.matchemphys.2016.09.060
ER  - 

@article{
author = "Simić, Danica and Stojanović, Dušica and Kojović, Aleksandar and Dimić, Mirjana and Totovski, Ljubica and Uskoković, Petar and Aleksić, Radoslav",
year = "2016",
abstract = "The subject of this research is to explore the possibility of preparation of nanocomposite material of improved thermo-mechanical and tribological properties, using inorganic fullerene-like tungsten disulfide nanostructures (IF-WS2) as reinforcement in poly(vinyl butyral) (PVB). This paper also reports investigation of the effects of using different solvents in preparation of PVB/IF-WS2 nanocomposite on the thermo-mechanical behavior of the resulting material. PVB was dissolved in ethanol, isopropanol, n-butanol and ethyl acetate. IF-WS2 nanoparticles were added to these PVB solutions and dispersed by different deagglomeration techniques. Samples were dried and thin films were obtained. Their microstructure and the quality of IF-WS2 dispersion and deagglomeration in PVE matrix was analyzed by scanning electron microscope (SEM). The reinforcing effect of IF-WS2 is examined by determining hardness, reduced modulus of elasticity and coefficient of friction, by nanoindentation and nanoscratch test, in terms of the different solvents applied in preparation of the samples, mode of stirring and different contents of IF-WS2. The glass transition temperature (T-g) was determined for the prepared samples using differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMA). Storage modulus and mechanical loss factor were observed in a defined temperature range using DMA.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Inorganic fullerene-like IF-WS2/PVB nanocomposites of improved thermo-mechanical and tribological properties",
pages = "344-335",
volume = "184",
doi = "10.1016/j.matchemphys.2016.09.060"
}

Simić, D., Stojanović, D., Kojović, A., Dimić, M., Totovski, L., Uskoković, P.,& Aleksić, R.. (2016). Inorganic fullerene-like IF-WS2/PVB nanocomposites of improved thermo-mechanical and tribological properties. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 184, 335-344.
https://doi.org/10.1016/j.matchemphys.2016.09.060

Simić D, Stojanović D, Kojović A, Dimić M, Totovski L, Uskoković P, Aleksić R. Inorganic fullerene-like IF-WS2/PVB nanocomposites of improved thermo-mechanical and tribological properties. in Materials Chemistry and Physics. 2016;184:335-344.
doi:10.1016/j.matchemphys.2016.09.060 .

Simić, Danica, Stojanović, Dušica, Kojović, Aleksandar, Dimić, Mirjana, Totovski, Ljubica, Uskoković, Petar, Aleksić, Radoslav, "Inorganic fullerene-like IF-WS2/PVB nanocomposites of improved thermo-mechanical and tribological properties" in Materials Chemistry and Physics, 184 (2016):335-344,
https://doi.org/10.1016/j.matchemphys.2016.09.060 . .

TY  - JOUR
AU  - Perišić, Srđan
AU  - Awhida, Ahmed
AU  - Radojević, Vesna
AU  - Davidović, Dejan
AU  - Trifunović, Dejan
AU  - Jančić-Heinemann, Radmila
AU  - Aleksić, Radoslav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2913
AB  - The mathematical model for heat transfer during the Bridgeman crystal growth, using the finite element method and the obtained result are presented. Some modifications to the method were introduced in order to incorporate the data obtained experimentally. Solving the model enabled comparison of the experimental and numerical data and to obtain sufficient accuracy. The model was used to calculate the temperature gradient in the sample and the calculated gradient was in accordance with the observed crystal growth regime.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Numerical simulation of temperature field in the vertical bridgman method crystal growth
EP  - 33
IS  - 1
SP  - 25
VL  - 21
DO  - 10.30544/130
ER  - 

@article{
author = "Perišić, Srđan and Awhida, Ahmed and Radojević, Vesna and Davidović, Dejan and Trifunović, Dejan and Jančić-Heinemann, Radmila and Aleksić, Radoslav",
year = "2015",
abstract = "The mathematical model for heat transfer during the Bridgeman crystal growth, using the finite element method and the obtained result are presented. Some modifications to the method were introduced in order to incorporate the data obtained experimentally. Solving the model enabled comparison of the experimental and numerical data and to obtain sufficient accuracy. The model was used to calculate the temperature gradient in the sample and the calculated gradient was in accordance with the observed crystal growth regime.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Numerical simulation of temperature field in the vertical bridgman method crystal growth",
pages = "33-25",
number = "1",
volume = "21",
doi = "10.30544/130"
}

Perišić, S., Awhida, A., Radojević, V., Davidović, D., Trifunović, D., Jančić-Heinemann, R.,& Aleksić, R.. (2015). Numerical simulation of temperature field in the vertical bridgman method crystal growth. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 21(1), 25-33.
https://doi.org/10.30544/130

Perišić S, Awhida A, Radojević V, Davidović D, Trifunović D, Jančić-Heinemann R, Aleksić R. Numerical simulation of temperature field in the vertical bridgman method crystal growth. in Metallurgical & Materials Engineering. 2015;21(1):25-33.
doi:10.30544/130 .

Perišić, Srđan, Awhida, Ahmed, Radojević, Vesna, Davidović, Dejan, Trifunović, Dejan, Jančić-Heinemann, Radmila, Aleksić, Radoslav, "Numerical simulation of temperature field in the vertical bridgman method crystal growth" in Metallurgical & Materials Engineering, 21, no. 1 (2015):25-33,
https://doi.org/10.30544/130 . .

TY  - JOUR
AU  - Grković, Mirjana
AU  - Stojanović, Dušica
AU  - Kojović, Aleksandar
AU  - Strnad, Simona
AU  - Kreže, Tatjana
AU  - Aleksić, Radoslav
AU  - Uskoković, Petar
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3068
AB  - Polyethylene oxide (PEO) functionalized graphene (f-G) was prepared by ultrasonication of pristine graphene in PEO aqueous solution. The feasible sonication protocol of PEO degradation and graphene functionalization enabled fabrication of solvent cast nanocomposites. Additionally, the steps to form new bio-nanocomposite films have been described. Taking the advantage of the combination of graphene, PEO and keratin fibers from poultry feather waste, the aforementioned bio-nanocomposite films were designed with extraordinary properties allowing the films to have promising applications as eventual packaging materials and enabling bio-waste keratin to be converted into value-added materials. Compared to neat PEO, addition of only 0.3 wt% f-G provided an increase of 92% to the storage modulus. These findings are similar to the nanoindentation results, which yielded increases in the reduced modulus of the same composition by about 92%. Nanoindentation testing shows that the incorporation of 0.3 wt% f-G increased the reduced modulus and hardness of the keratin-PEO blend by about 155 and 99%, respectively.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Keratin-polyethylene oxide bio-nanocomposites reinforced with ultrasonically functionalized graphene
EP  - 91287
IS  - 111
SP  - 91280
VL  - 5
DO  - 10.1039/c5ra12402f
ER  - 

@article{
author = "Grković, Mirjana and Stojanović, Dušica and Kojović, Aleksandar and Strnad, Simona and Kreže, Tatjana and Aleksić, Radoslav and Uskoković, Petar",
year = "2015",
abstract = "Polyethylene oxide (PEO) functionalized graphene (f-G) was prepared by ultrasonication of pristine graphene in PEO aqueous solution. The feasible sonication protocol of PEO degradation and graphene functionalization enabled fabrication of solvent cast nanocomposites. Additionally, the steps to form new bio-nanocomposite films have been described. Taking the advantage of the combination of graphene, PEO and keratin fibers from poultry feather waste, the aforementioned bio-nanocomposite films were designed with extraordinary properties allowing the films to have promising applications as eventual packaging materials and enabling bio-waste keratin to be converted into value-added materials. Compared to neat PEO, addition of only 0.3 wt% f-G provided an increase of 92% to the storage modulus. These findings are similar to the nanoindentation results, which yielded increases in the reduced modulus of the same composition by about 92%. Nanoindentation testing shows that the incorporation of 0.3 wt% f-G increased the reduced modulus and hardness of the keratin-PEO blend by about 155 and 99%, respectively.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Keratin-polyethylene oxide bio-nanocomposites reinforced with ultrasonically functionalized graphene",
pages = "91287-91280",
number = "111",
volume = "5",
doi = "10.1039/c5ra12402f"
}

Grković, M., Stojanović, D., Kojović, A., Strnad, S., Kreže, T., Aleksić, R.,& Uskoković, P.. (2015). Keratin-polyethylene oxide bio-nanocomposites reinforced with ultrasonically functionalized graphene. in RSC Advances
Royal Society of Chemistry., 5(111), 91280-91287.
https://doi.org/10.1039/c5ra12402f

Grković M, Stojanović D, Kojović A, Strnad S, Kreže T, Aleksić R, Uskoković P. Keratin-polyethylene oxide bio-nanocomposites reinforced with ultrasonically functionalized graphene. in RSC Advances. 2015;5(111):91280-91287.
doi:10.1039/c5ra12402f .

Grković, Mirjana, Stojanović, Dušica, Kojović, Aleksandar, Strnad, Simona, Kreže, Tatjana, Aleksić, Radoslav, Uskoković, Petar, "Keratin-polyethylene oxide bio-nanocomposites reinforced with ultrasonically functionalized graphene" in RSC Advances, 5, no. 111 (2015):91280-91287,
https://doi.org/10.1039/c5ra12402f . .

TY  - JOUR
AU  - Obradović, Vera
AU  - Stojanović, Dušica
AU  - Radojević, Vesna
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2904
AB  - The physical and mechanical properties of the six samples of polyurethane/p-aramid multiaxial fabric forms (Kolon fabrics) were analyzed by high speed impact tester. The samples were impregnated with 10 wt.% poly (vinyl butyral) (PVB)/ethanol solution and modified with γ-aminopropyltriethoxysilane (AMEO silane)/ethanol solution. Unmodified silica (SiO2) nanoparticles, tungsten disulfide (WS2) nanoparticles and multiwalled carbon nanotubes (MWCNT) were used as reinforcement for multiaxial Kolon fabrics. The SiO2/PVB mass fraction was 10 wt.%, while the WS2/PVB and MWCNT/PVB mass fractions were the same - 1 wt.%. The results revealed the increase of the maximal impact force and the total energy absorbed for all the samples compared to the unmodified Kolon fabric sample and the application possibilities of these materials for the antiballistic protection.
AB  - Fizička i mehanička svojstva šest uzoraka poliuretan/p-aramidnih multiaksijalnih tkanina (Kolon lamina) su analizirana pomoću impakt tester uređaja. Uzorci su impregnisani sa 10 mas.% rastvorom poli (vinil butiral)(PVB)/etanol i modifikovani 2 mas.% rastvorom γ-aminopropiltrietoksisilana (AMEO silan) u etanolu. Nemodifikovane silika (SiO2) nanočestice, volfram disulfid (WS2) nanočestice i višeslojne ugljenične nanocevi (MWCNT) su korišćene kao ojačanja multiaksijalnih Kolon lamina. Maseni udeo ojačanja SiO2/PVB je bio 10 mas.%, dok su maseni udeli WS2/PVB i MWCNT/PVB bili 1 mas.%. Rezultati pokazuju povećanje maksimalne udarne sile i ukupne apsorbovane energije kod svih uzoraka u odnosu na nemodifikovani Kolon uzorak i mogućnosti primene ovih materijala za antibalističku zaštitu.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Impact testing with controlled energy of multiaxial aramid fabrics with various types of reinforcement
T1  - Ispitivanje udarima kontrolisane energije multiaksijalnih aramidnih lamina sa različitim tipovima ojačanja
EP  - 589
IS  - 4
SP  - 585
VL  - 70
DO  - 10.5937/tehnika1504585O
ER  - 

@article{
author = "Obradović, Vera and Stojanović, Dušica and Radojević, Vesna and Uskoković, Petar and Aleksić, Radoslav",
year = "2015",
abstract = "The physical and mechanical properties of the six samples of polyurethane/p-aramid multiaxial fabric forms (Kolon fabrics) were analyzed by high speed impact tester. The samples were impregnated with 10 wt.% poly (vinyl butyral) (PVB)/ethanol solution and modified with γ-aminopropyltriethoxysilane (AMEO silane)/ethanol solution. Unmodified silica (SiO2) nanoparticles, tungsten disulfide (WS2) nanoparticles and multiwalled carbon nanotubes (MWCNT) were used as reinforcement for multiaxial Kolon fabrics. The SiO2/PVB mass fraction was 10 wt.%, while the WS2/PVB and MWCNT/PVB mass fractions were the same - 1 wt.%. The results revealed the increase of the maximal impact force and the total energy absorbed for all the samples compared to the unmodified Kolon fabric sample and the application possibilities of these materials for the antiballistic protection., Fizička i mehanička svojstva šest uzoraka poliuretan/p-aramidnih multiaksijalnih tkanina (Kolon lamina) su analizirana pomoću impakt tester uređaja. Uzorci su impregnisani sa 10 mas.% rastvorom poli (vinil butiral)(PVB)/etanol i modifikovani 2 mas.% rastvorom γ-aminopropiltrietoksisilana (AMEO silan) u etanolu. Nemodifikovane silika (SiO2) nanočestice, volfram disulfid (WS2) nanočestice i višeslojne ugljenične nanocevi (MWCNT) su korišćene kao ojačanja multiaksijalnih Kolon lamina. Maseni udeo ojačanja SiO2/PVB je bio 10 mas.%, dok su maseni udeli WS2/PVB i MWCNT/PVB bili 1 mas.%. Rezultati pokazuju povećanje maksimalne udarne sile i ukupne apsorbovane energije kod svih uzoraka u odnosu na nemodifikovani Kolon uzorak i mogućnosti primene ovih materijala za antibalističku zaštitu.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Impact testing with controlled energy of multiaxial aramid fabrics with various types of reinforcement, Ispitivanje udarima kontrolisane energije multiaksijalnih aramidnih lamina sa različitim tipovima ojačanja",
pages = "589-585",
number = "4",
volume = "70",
doi = "10.5937/tehnika1504585O"
}

Obradović, V., Stojanović, D., Radojević, V., Uskoković, P.,& Aleksić, R.. (2015). Impact testing with controlled energy of multiaxial aramid fabrics with various types of reinforcement. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 70(4), 585-589.
https://doi.org/10.5937/tehnika1504585O

Obradović V, Stojanović D, Radojević V, Uskoković P, Aleksić R. Impact testing with controlled energy of multiaxial aramid fabrics with various types of reinforcement. in Tehnika. 2015;70(4):585-589.
doi:10.5937/tehnika1504585O .

Obradović, Vera, Stojanović, Dušica, Radojević, Vesna, Uskoković, Petar, Aleksić, Radoslav, "Impact testing with controlled energy of multiaxial aramid fabrics with various types of reinforcement" in Tehnika, 70, no. 4 (2015):585-589,
https://doi.org/10.5937/tehnika1504585O . .

TY  - JOUR
AU  - Obradović, Vera
AU  - Stojanović, Dušica
AU  - Živković, Irena
AU  - Radojević, Vesna
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3038
AB  - This study presents dynamic mechanical and impact properties of the new form of hybrid thermoplastic composites. The six composites of polyurethane/p-aramid multiaxial fabric forms (Kolon fabrics) were impregnated with 10 wt% poly(vinyl. butyral) (PVB)/ethanol solution with the addition of pristine multiwalled carbon nanotubes (MWCNT) where the PVB/fabric ratio was 20 wt%. All the composites consisted of four layers of the impregnated fabrics. The MWCNT/PVB content was 0, 0.5 and 1 wt%. The surface of the three composites with different MWCNT/PVB content was modified with gamma-aminopropyltriethoxy silane (AMEO silane)/ethanol solution.. The physical and dynamic mechanical properties of the prepared composite samples were analyzed by dynamic mechanical analysis (DMA) and high speed puncture impact tester. The structures of the composite samples were investigated by scanning electron microscopy (SEM). The results showed that the Kolon/AMEO/PVB/1 wt% MWCNT sample yielded a 60 % improvement in the storage modulus and a 73 % improvement in the impact absorbed energy compared to the Kolon/PVB sample. The carbon nanotubes (MWCNT) were added to improve the dynamic mechanical and impact properties of the materials for ballistic protection.
PB  - Korean Fiber Soc, Seoul
T2  - Fibers and Polymers
T1  - Dynamic Mechanical and Impact Properties of Composites Reinforced with Carbon Nanotubes
EP  - 145
IS  - 1
SP  - 138
VL  - 16
DO  - 10.1007/s12221-015-0138-2
ER  - 

@article{
author = "Obradović, Vera and Stojanović, Dušica and Živković, Irena and Radojević, Vesna and Uskoković, Petar and Aleksić, Radoslav",
year = "2015",
abstract = "This study presents dynamic mechanical and impact properties of the new form of hybrid thermoplastic composites. The six composites of polyurethane/p-aramid multiaxial fabric forms (Kolon fabrics) were impregnated with 10 wt% poly(vinyl. butyral) (PVB)/ethanol solution with the addition of pristine multiwalled carbon nanotubes (MWCNT) where the PVB/fabric ratio was 20 wt%. All the composites consisted of four layers of the impregnated fabrics. The MWCNT/PVB content was 0, 0.5 and 1 wt%. The surface of the three composites with different MWCNT/PVB content was modified with gamma-aminopropyltriethoxy silane (AMEO silane)/ethanol solution.. The physical and dynamic mechanical properties of the prepared composite samples were analyzed by dynamic mechanical analysis (DMA) and high speed puncture impact tester. The structures of the composite samples were investigated by scanning electron microscopy (SEM). The results showed that the Kolon/AMEO/PVB/1 wt% MWCNT sample yielded a 60 % improvement in the storage modulus and a 73 % improvement in the impact absorbed energy compared to the Kolon/PVB sample. The carbon nanotubes (MWCNT) were added to improve the dynamic mechanical and impact properties of the materials for ballistic protection.",
publisher = "Korean Fiber Soc, Seoul",
journal = "Fibers and Polymers",
title = "Dynamic Mechanical and Impact Properties of Composites Reinforced with Carbon Nanotubes",
pages = "145-138",
number = "1",
volume = "16",
doi = "10.1007/s12221-015-0138-2"
}

Obradović, V., Stojanović, D., Živković, I., Radojević, V., Uskoković, P.,& Aleksić, R.. (2015). Dynamic Mechanical and Impact Properties of Composites Reinforced with Carbon Nanotubes. in Fibers and Polymers
Korean Fiber Soc, Seoul., 16(1), 138-145.
https://doi.org/10.1007/s12221-015-0138-2

Obradović V, Stojanović D, Živković I, Radojević V, Uskoković P, Aleksić R. Dynamic Mechanical and Impact Properties of Composites Reinforced with Carbon Nanotubes. in Fibers and Polymers. 2015;16(1):138-145.
doi:10.1007/s12221-015-0138-2 .

Obradović, Vera, Stojanović, Dušica, Živković, Irena, Radojević, Vesna, Uskoković, Petar, Aleksić, Radoslav, "Dynamic Mechanical and Impact Properties of Composites Reinforced with Carbon Nanotubes" in Fibers and Polymers, 16, no. 1 (2015):138-145,
https://doi.org/10.1007/s12221-015-0138-2 . .

TY  - JOUR
AU  - Alzarrug, Faisal Ali
AU  - Dimitrijević, Marija
AU  - Jančić-Heinemann, Radmila
AU  - Radojević, Vesna
AU  - Stojanović, Dušica
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3110
AB  - Alumina fillers having different morphologies were used for reinforcement of PMMA-based composite materials. The employed fillers had the same chemical composition but morphologically were spherical nanoparticles, whiskers and an electrospun product that was composed of micro-sized mostly spherical particles and nanofibers. The electrospun product was obtained from aluminum chloride hydroxide/PVA/water solution. All fillers were added without surface treatment and mechanical characteristics of obtained composites were determined using dynamic mechanical analysis (DMA) and nanoindentation. From the nanoindentation results, the reduced elastic modulus for the obtained specimens using 3 wt.% of electrospun product was 134% of the one obtained with the polymer alone and the hardness was improved to 157.8% compared to the polymer without any additive. DMA shows that the storage modulus at room temperature was twice that of the polymer alone.
PB  - Elsevier Sci Ltd, Oxford
T2  - Materials & Design
T1  - The use of different alumina fillers for improvement of the mechanical properties of hybrid PMMA composites
EP  - 581
SP  - 575
VL  - 86
DO  - 10.1016/j.matdes.2015.07.069
ER  - 

@article{
author = "Alzarrug, Faisal Ali and Dimitrijević, Marija and Jančić-Heinemann, Radmila and Radojević, Vesna and Stojanović, Dušica and Uskoković, Petar and Aleksić, Radoslav",
year = "2015",
abstract = "Alumina fillers having different morphologies were used for reinforcement of PMMA-based composite materials. The employed fillers had the same chemical composition but morphologically were spherical nanoparticles, whiskers and an electrospun product that was composed of micro-sized mostly spherical particles and nanofibers. The electrospun product was obtained from aluminum chloride hydroxide/PVA/water solution. All fillers were added without surface treatment and mechanical characteristics of obtained composites were determined using dynamic mechanical analysis (DMA) and nanoindentation. From the nanoindentation results, the reduced elastic modulus for the obtained specimens using 3 wt.% of electrospun product was 134% of the one obtained with the polymer alone and the hardness was improved to 157.8% compared to the polymer without any additive. DMA shows that the storage modulus at room temperature was twice that of the polymer alone.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Materials & Design",
title = "The use of different alumina fillers for improvement of the mechanical properties of hybrid PMMA composites",
pages = "581-575",
volume = "86",
doi = "10.1016/j.matdes.2015.07.069"
}

Alzarrug, F. A., Dimitrijević, M., Jančić-Heinemann, R., Radojević, V., Stojanović, D., Uskoković, P.,& Aleksić, R.. (2015). The use of different alumina fillers for improvement of the mechanical properties of hybrid PMMA composites. in Materials & Design
Elsevier Sci Ltd, Oxford., 86, 575-581.
https://doi.org/10.1016/j.matdes.2015.07.069

Alzarrug FA, Dimitrijević M, Jančić-Heinemann R, Radojević V, Stojanović D, Uskoković P, Aleksić R. The use of different alumina fillers for improvement of the mechanical properties of hybrid PMMA composites. in Materials & Design. 2015;86:575-581.
doi:10.1016/j.matdes.2015.07.069 .

Alzarrug, Faisal Ali, Dimitrijević, Marija, Jančić-Heinemann, Radmila, Radojević, Vesna, Stojanović, Dušica, Uskoković, Petar, Aleksić, Radoslav, "The use of different alumina fillers for improvement of the mechanical properties of hybrid PMMA composites" in Materials & Design, 86 (2015):575-581,
https://doi.org/10.1016/j.matdes.2015.07.069 . .

TY  - JOUR
AU  - El Swie, H.
AU  - Radojević, Vesna
AU  - Brajović, Ljiljana
AU  - Stajić-Trošić, Jasna
AU  - Ćosović, Vladan
AU  - Grujić, Aleksandar
AU  - Aleksić, Radoslav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3084
AB  - The commercial multi-mode optical fiber was coated with magnetic composite material prepared using Nd-Fe-B permanent magnet powder dispersed in poly (ethylene-co-vinyl acetate)-EVA. Characterization of microstructure, thermal stability and mechanical properties of the composite coatings with different Nd-Fe-B powder content were performed using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and standard tensile tester, respectively. Experimental results show that composites with higher content of Nd-Fe-B powder have improved thermal and mechanical properties. Propagation characteristics of the constructed optical fiber magnetic sensing element (OFMSE) in the external magnetic field were investigated in relation to quality and composition of the applied composite coatings. The attenuation of optical signal with applied external magnetic field intensity was monitored and the results suggest that the sample with 50 wt-% of Nd-Fe-B provides the greatest sensitivity of the sensor element.
PB  - Inst Materials Physics, Bucharest
T2  - Digest Journal of Nanomaterials and Biostructures
T1  - Synthesis and performance of polymer based magnetic composite sensing element
EP  - 1483
IS  - 4
SP  - 1475
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3084
ER  - 

@article{
author = "El Swie, H. and Radojević, Vesna and Brajović, Ljiljana and Stajić-Trošić, Jasna and Ćosović, Vladan and Grujić, Aleksandar and Aleksić, Radoslav",
year = "2015",
abstract = "The commercial multi-mode optical fiber was coated with magnetic composite material prepared using Nd-Fe-B permanent magnet powder dispersed in poly (ethylene-co-vinyl acetate)-EVA. Characterization of microstructure, thermal stability and mechanical properties of the composite coatings with different Nd-Fe-B powder content were performed using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and standard tensile tester, respectively. Experimental results show that composites with higher content of Nd-Fe-B powder have improved thermal and mechanical properties. Propagation characteristics of the constructed optical fiber magnetic sensing element (OFMSE) in the external magnetic field were investigated in relation to quality and composition of the applied composite coatings. The attenuation of optical signal with applied external magnetic field intensity was monitored and the results suggest that the sample with 50 wt-% of Nd-Fe-B provides the greatest sensitivity of the sensor element.",
publisher = "Inst Materials Physics, Bucharest",
journal = "Digest Journal of Nanomaterials and Biostructures",
title = "Synthesis and performance of polymer based magnetic composite sensing element",
pages = "1483-1475",
number = "4",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3084"
}

El Swie, H., Radojević, V., Brajović, L., Stajić-Trošić, J., Ćosović, V., Grujić, A.,& Aleksić, R.. (2015). Synthesis and performance of polymer based magnetic composite sensing element. in Digest Journal of Nanomaterials and Biostructures
Inst Materials Physics, Bucharest., 10(4), 1475-1483.
https://hdl.handle.net/21.15107/rcub_technorep_3084

El Swie H, Radojević V, Brajović L, Stajić-Trošić J, Ćosović V, Grujić A, Aleksić R. Synthesis and performance of polymer based magnetic composite sensing element. in Digest Journal of Nanomaterials and Biostructures. 2015;10(4):1475-1483.
https://hdl.handle.net/21.15107/rcub_technorep_3084 .

El Swie, H., Radojević, Vesna, Brajović, Ljiljana, Stajić-Trošić, Jasna, Ćosović, Vladan, Grujić, Aleksandar, Aleksić, Radoslav, "Synthesis and performance of polymer based magnetic composite sensing element" in Digest Journal of Nanomaterials and Biostructures, 10, no. 4 (2015):1475-1483,
https://hdl.handle.net/21.15107/rcub_technorep_3084 .

TY  - JOUR
AU  - Dukali, R. M.
AU  - Radović, I.
AU  - Stojanović, Dušica
AU  - Uskoković, Petar
AU  - Romčević, Nebojša Ž.
AU  - Radojević, Vesna
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2805
AB  - This paper investigates processing and characterization of polymer composite material PMMA-Bi12SiO20 (BSO). Thin films of pure PMMA and composites with 0.5 and 1.0 wt% of Bi12SiO20 powder were made using solution casting method. Characterization of starting components and composites was performed with XRD, FTIR, Raman spectroscopy, SEM, DCS, tensile tests, nanoindentation and spectroscopic ellipsometry method in order to obtain information of their morphology, structure, thermal stability, mechanical and optical properties. Refractive index measurements using spectroscopic ellipsometry method have shown that refractive index of composites increases with the powder content. Nanoindentation and tensile tests have shown mechanical improvements with the addition of the crystal through Young's and reduced Young's modulus and hardness values. DSC analysis has shown an increase in T-g for composite with BSO.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Preparation, characterization and mechanical properties of Bi12SiO20-PMMA composite films
EP  - 381
SP  - 376
VL  - 583
DO  - 10.1016/j.jallcom.2013.08.206
ER  - 

@article{
author = "Dukali, R. M. and Radović, I. and Stojanović, Dušica and Uskoković, Petar and Romčević, Nebojša Ž. and Radojević, Vesna and Aleksić, Radoslav",
year = "2014",
abstract = "This paper investigates processing and characterization of polymer composite material PMMA-Bi12SiO20 (BSO). Thin films of pure PMMA and composites with 0.5 and 1.0 wt% of Bi12SiO20 powder were made using solution casting method. Characterization of starting components and composites was performed with XRD, FTIR, Raman spectroscopy, SEM, DCS, tensile tests, nanoindentation and spectroscopic ellipsometry method in order to obtain information of their morphology, structure, thermal stability, mechanical and optical properties. Refractive index measurements using spectroscopic ellipsometry method have shown that refractive index of composites increases with the powder content. Nanoindentation and tensile tests have shown mechanical improvements with the addition of the crystal through Young's and reduced Young's modulus and hardness values. DSC analysis has shown an increase in T-g for composite with BSO.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Preparation, characterization and mechanical properties of Bi12SiO20-PMMA composite films",
pages = "381-376",
volume = "583",
doi = "10.1016/j.jallcom.2013.08.206"
}

Dukali, R. M., Radović, I., Stojanović, D., Uskoković, P., Romčević, N. Ž., Radojević, V.,& Aleksić, R.. (2014). Preparation, characterization and mechanical properties of Bi12SiO20-PMMA composite films. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 583, 376-381.
https://doi.org/10.1016/j.jallcom.2013.08.206

Dukali RM, Radović I, Stojanović D, Uskoković P, Romčević NŽ, Radojević V, Aleksić R. Preparation, characterization and mechanical properties of Bi12SiO20-PMMA composite films. in Journal of Alloys and Compounds. 2014;583:376-381.
doi:10.1016/j.jallcom.2013.08.206 .

Dukali, R. M., Radović, I., Stojanović, Dušica, Uskoković, Petar, Romčević, Nebojša Ž., Radojević, Vesna, Aleksić, Radoslav, "Preparation, characterization and mechanical properties of Bi12SiO20-PMMA composite films" in Journal of Alloys and Compounds, 583 (2014):376-381,
https://doi.org/10.1016/j.jallcom.2013.08.206 . .

TY  - JOUR
AU  - Pavlović, Miroslav M.
AU  - Pavlović, Miomir
AU  - Ćosović, Vladan
AU  - Bojanić, Vaso
AU  - Nikolić, Nebojša D.
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5778
AB  - Composites based on polymers with conductive fillers have been gaining more significant roles in a variety of technological domains and they are getting in the research focus of numerous studies as a part of growing research trend. Galvanostatically produced copper powder with high values of specific area was used as filler for synthesis of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder. This article is concerned with characterization of these composites. Analysis of the most significant properties of prepared composites and its components included measurements of electrical conductivity, impedance spectroscopy (IS) behavior and structural and morphological analysis. Volume fraction of the copper powder was varied from 2.0-29.8% (v/v). The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold (PT). It was shown that PT depends on both particle shape and type of spatial distribution. IS measurements have shown that particle morphology having pronounced grain boundaries has great effect on appearance of electric conductive layers. The packaging effect and more pronounced interpartical contact with copper powder particles lead to "movement" of PT, which for the particles  LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). IS response of the composites showed existence of electrical conductive layers, each having different resistivity which increases towards interior of the composite.
PB  - Electrochemical Science Group
T2  - International Journal of Electrochemical Science
T1  - Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways
EP  - 8366
IS  - 12
SP  - 8355
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_cer_1415
ER  - 

@article{
author = "Pavlović, Miroslav M. and Pavlović, Miomir and Ćosović, Vladan and Bojanić, Vaso and Nikolić, Nebojša D. and Aleksić, Radoslav",
year = "2014",
abstract = "Composites based on polymers with conductive fillers have been gaining more significant roles in a variety of technological domains and they are getting in the research focus of numerous studies as a part of growing research trend. Galvanostatically produced copper powder with high values of specific area was used as filler for synthesis of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder. This article is concerned with characterization of these composites. Analysis of the most significant properties of prepared composites and its components included measurements of electrical conductivity, impedance spectroscopy (IS) behavior and structural and morphological analysis. Volume fraction of the copper powder was varied from 2.0-29.8% (v/v). The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold (PT). It was shown that PT depends on both particle shape and type of spatial distribution. IS measurements have shown that particle morphology having pronounced grain boundaries has great effect on appearance of electric conductive layers. The packaging effect and more pronounced interpartical contact with copper powder particles lead to "movement" of PT, which for the particles  LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). IS response of the composites showed existence of electrical conductive layers, each having different resistivity which increases towards interior of the composite.",
publisher = "Electrochemical Science Group",
journal = "International Journal of Electrochemical Science",
title = "Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways",
pages = "8366-8355",
number = "12",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_cer_1415"
}

Pavlović, M. M., Pavlović, M., Ćosović, V., Bojanić, V., Nikolić, N. D.,& Aleksić, R.. (2014). Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways. in International Journal of Electrochemical Science
Electrochemical Science Group., 9(12), 8355-8366.
https://hdl.handle.net/21.15107/rcub_cer_1415

Pavlović MM, Pavlović M, Ćosović V, Bojanić V, Nikolić ND, Aleksić R. Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways. in International Journal of Electrochemical Science. 2014;9(12):8355-8366.
https://hdl.handle.net/21.15107/rcub_cer_1415 .

Pavlović, Miroslav M., Pavlović, Miomir, Ćosović, Vladan, Bojanić, Vaso, Nikolić, Nebojša D., Aleksić, Radoslav, "Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways" in International Journal of Electrochemical Science, 9, no. 12 (2014):8355-8366,
https://hdl.handle.net/21.15107/rcub_cer_1415 .

TY  - JOUR
AU  - Ben Hasan, Somaya Ahmed
AU  - Stojanović, Dušica
AU  - Kojović, Aleksandar
AU  - Janković-Častvan, Ivona
AU  - Janaćković, Đorđe
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2794
AB  - This study presents an investigation of the effects of the processing conditions on the uniformity, morphology and structure of patterned nanofibrous mats of electrospun poly(vinyl butyral)/sepiolite (PVB/Sep) nanocomposite fibers, which is a novel system for applications in materials for antiballistic protection, biomedical scaffolds and sorption for water purification. Aqueous suspensions of sepiolite exhibit thixotropic behavior because of their fibrous structure, porosity, large specific surface area and the presence of silanol groups on the surface. Functionalization of the sepiolite fibers in an aqueous thixotropic gel was realized on the surface of individual fibers using amino silanes as coupling agents. Different contents (3 wt%, 30 wt% and 50 wt%) of neat and modified sepiolite fibers were dispersed by ultrasonic irradiation in an ethanolic solution of PVB and were used to obtain nanocomposite fibers by electrospinning. The modified PVB/Sep nanocomposite fibers showed a decrease in the mean fiber diameter by about 75% and an increase in the composite storage modulus by about 31% in comparison to the neat PVB fibers. The optimal uniformity of the diameter of the fabricated.nanofibers was obtained using a low flow rate (0.5 mL/h), high collector distance (15 cm) and a constant applied voltage of 24 kV. The advantages of the systems lay primarily in improved mechanical properties, which enabled proper manipulation through the achieved mechanical integrity of nanofilter structures in real applications.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite
EP  - 1146
IS  - 1
SP  - 1139
VL  - 40
DO  - 10.1016/j.ceramint.2013.06.115
ER  - 

@article{
author = "Ben Hasan, Somaya Ahmed and Stojanović, Dušica and Kojović, Aleksandar and Janković-Častvan, Ivona and Janaćković, Đorđe and Uskoković, Petar and Aleksić, Radoslav",
year = "2014",
abstract = "This study presents an investigation of the effects of the processing conditions on the uniformity, morphology and structure of patterned nanofibrous mats of electrospun poly(vinyl butyral)/sepiolite (PVB/Sep) nanocomposite fibers, which is a novel system for applications in materials for antiballistic protection, biomedical scaffolds and sorption for water purification. Aqueous suspensions of sepiolite exhibit thixotropic behavior because of their fibrous structure, porosity, large specific surface area and the presence of silanol groups on the surface. Functionalization of the sepiolite fibers in an aqueous thixotropic gel was realized on the surface of individual fibers using amino silanes as coupling agents. Different contents (3 wt%, 30 wt% and 50 wt%) of neat and modified sepiolite fibers were dispersed by ultrasonic irradiation in an ethanolic solution of PVB and were used to obtain nanocomposite fibers by electrospinning. The modified PVB/Sep nanocomposite fibers showed a decrease in the mean fiber diameter by about 75% and an increase in the composite storage modulus by about 31% in comparison to the neat PVB fibers. The optimal uniformity of the diameter of the fabricated.nanofibers was obtained using a low flow rate (0.5 mL/h), high collector distance (15 cm) and a constant applied voltage of 24 kV. The advantages of the systems lay primarily in improved mechanical properties, which enabled proper manipulation through the achieved mechanical integrity of nanofilter structures in real applications.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite",
pages = "1146-1139",
number = "1",
volume = "40",
doi = "10.1016/j.ceramint.2013.06.115"
}

Ben Hasan, S. A., Stojanović, D., Kojović, A., Janković-Častvan, I., Janaćković, Đ., Uskoković, P.,& Aleksić, R.. (2014). Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(1), 1139-1146.
https://doi.org/10.1016/j.ceramint.2013.06.115

Ben Hasan SA, Stojanović D, Kojović A, Janković-Častvan I, Janaćković Đ, Uskoković P, Aleksić R. Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite. in Ceramics International. 2014;40(1):1139-1146.
doi:10.1016/j.ceramint.2013.06.115 .

Ben Hasan, Somaya Ahmed, Stojanović, Dušica, Kojović, Aleksandar, Janković-Častvan, Ivona, Janaćković, Đorđe, Uskoković, Petar, Aleksić, Radoslav, "Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite" in Ceramics International, 40, no. 1 (2014):1139-1146,
https://doi.org/10.1016/j.ceramint.2013.06.115 . .

TY  - JOUR
AU  - Tomić, Nataša
AU  - Dimitrijević, Marija
AU  - Međo, Bojan
AU  - Rakin, Marko
AU  - Jančić-Heinemann, Radmila
AU  - Radojević, Vesna
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2729
AB  - Silicon carbide is the material that in sintered form is suiTab. for protection from impact as part of the multilayered structure. Its role is to accumulate energy from the projectile, to plastically deform the projectile and to protect other layers of the material. Standard procedures for material testing include structure testing, surface defect shape and size determination and mechanical testing. The obtained information about surface defects was used to calculate the behavior of the sample exposed to bending and the finite element method was used for this simulation. The obtained results are in accordance with the experimental ones.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Comparison of Mechanical Behavior of SiC Sintered Specimen to Analysis of Surface Defects
EP  - 233
IS  - 2
SP  - 225
VL  - 46
DO  - 10.2298/SOS1402225T
ER  - 

@article{
author = "Tomić, Nataša and Dimitrijević, Marija and Međo, Bojan and Rakin, Marko and Jančić-Heinemann, Radmila and Radojević, Vesna and Aleksić, Radoslav",
year = "2014",
abstract = "Silicon carbide is the material that in sintered form is suiTab. for protection from impact as part of the multilayered structure. Its role is to accumulate energy from the projectile, to plastically deform the projectile and to protect other layers of the material. Standard procedures for material testing include structure testing, surface defect shape and size determination and mechanical testing. The obtained information about surface defects was used to calculate the behavior of the sample exposed to bending and the finite element method was used for this simulation. The obtained results are in accordance with the experimental ones.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Comparison of Mechanical Behavior of SiC Sintered Specimen to Analysis of Surface Defects",
pages = "233-225",
number = "2",
volume = "46",
doi = "10.2298/SOS1402225T"
}

Tomić, N., Dimitrijević, M., Međo, B., Rakin, M., Jančić-Heinemann, R., Radojević, V.,& Aleksić, R.. (2014). Comparison of Mechanical Behavior of SiC Sintered Specimen to Analysis of Surface Defects. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 46(2), 225-233.
https://doi.org/10.2298/SOS1402225T

Tomić N, Dimitrijević M, Međo B, Rakin M, Jančić-Heinemann R, Radojević V, Aleksić R. Comparison of Mechanical Behavior of SiC Sintered Specimen to Analysis of Surface Defects. in Science of Sintering. 2014;46(2):225-233.
doi:10.2298/SOS1402225T .

Tomić, Nataša, Dimitrijević, Marija, Međo, Bojan, Rakin, Marko, Jančić-Heinemann, Radmila, Radojević, Vesna, Aleksić, Radoslav, "Comparison of Mechanical Behavior of SiC Sintered Specimen to Analysis of Surface Defects" in Science of Sintering, 46, no. 2 (2014):225-233,
https://doi.org/10.2298/SOS1402225T . .

TY  - JOUR
AU  - Obradović, Vera
AU  - Stojanović, Dušica
AU  - Jančić-Heinemann, Radmila
AU  - Zivković, Irena
AU  - Radojević, Vesna
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2705
AB  - Multi-axial aramid fabrics have a wide range of applications in the construction of composite structures for body armor. Nanoparticles, which include nanosilica, are one of the most common nanofillers for these structures. The particles of nanosilica possess nanometer dimensions with high specific surface area. Silane coupling agents are mostly used for modifying nanosilica surface in order to prevent silica agglomeration. Incorporation of nanosilica treated with silane adhesion promoter, in the matrix part of the hybrid composite form, leads to increased resistance to the bullet shock impact. In this study, the resistance to penetration of a shot bullet was tested for four samples of the aramid fabric composite forms. All fabrics were coated with gamma-aminopropyl triethoxysilane (AMEO silane)/ethanol solution. Two samples were impregnated with poly (vinyl butyral) (PVB)/ethanol solution, while the other two were impregnated with the same solution, but with the addition of the 30 wt.% AMEO silane modified silica nanoparticles as reinforcement. The samples were both hard and flexible options. The bullet-shooting test was applied to all the composites by two different bullet types. The structural design of the samples improved the ballistic resistance after the bullets were shot. Some ballistic image analyses for print and penetration depth of the samples were performed using Image Pro-Plus software.
PB  - Inda, Cary
T2  - Journal of Engineered Fibers and Fabrics
T1  - Ballistic Properties of Hybrid Thermoplastic Composites with Silica Nanoparticles
EP  - 107
IS  - 4
SP  - 97
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2705
ER  - 

@article{
author = "Obradović, Vera and Stojanović, Dušica and Jančić-Heinemann, Radmila and Zivković, Irena and Radojević, Vesna and Uskoković, Petar and Aleksić, Radoslav",
year = "2014",
abstract = "Multi-axial aramid fabrics have a wide range of applications in the construction of composite structures for body armor. Nanoparticles, which include nanosilica, are one of the most common nanofillers for these structures. The particles of nanosilica possess nanometer dimensions with high specific surface area. Silane coupling agents are mostly used for modifying nanosilica surface in order to prevent silica agglomeration. Incorporation of nanosilica treated with silane adhesion promoter, in the matrix part of the hybrid composite form, leads to increased resistance to the bullet shock impact. In this study, the resistance to penetration of a shot bullet was tested for four samples of the aramid fabric composite forms. All fabrics were coated with gamma-aminopropyl triethoxysilane (AMEO silane)/ethanol solution. Two samples were impregnated with poly (vinyl butyral) (PVB)/ethanol solution, while the other two were impregnated with the same solution, but with the addition of the 30 wt.% AMEO silane modified silica nanoparticles as reinforcement. The samples were both hard and flexible options. The bullet-shooting test was applied to all the composites by two different bullet types. The structural design of the samples improved the ballistic resistance after the bullets were shot. Some ballistic image analyses for print and penetration depth of the samples were performed using Image Pro-Plus software.",
publisher = "Inda, Cary",
journal = "Journal of Engineered Fibers and Fabrics",
title = "Ballistic Properties of Hybrid Thermoplastic Composites with Silica Nanoparticles",
pages = "107-97",
number = "4",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2705"
}

Obradović, V., Stojanović, D., Jančić-Heinemann, R., Zivković, I., Radojević, V., Uskoković, P.,& Aleksić, R.. (2014). Ballistic Properties of Hybrid Thermoplastic Composites with Silica Nanoparticles. in Journal of Engineered Fibers and Fabrics
Inda, Cary., 9(4), 97-107.
https://hdl.handle.net/21.15107/rcub_technorep_2705

Obradović V, Stojanović D, Jančić-Heinemann R, Zivković I, Radojević V, Uskoković P, Aleksić R. Ballistic Properties of Hybrid Thermoplastic Composites with Silica Nanoparticles. in Journal of Engineered Fibers and Fabrics. 2014;9(4):97-107.
https://hdl.handle.net/21.15107/rcub_technorep_2705 .

Obradović, Vera, Stojanović, Dušica, Jančić-Heinemann, Radmila, Zivković, Irena, Radojević, Vesna, Uskoković, Petar, Aleksić, Radoslav, "Ballistic Properties of Hybrid Thermoplastic Composites with Silica Nanoparticles" in Journal of Engineered Fibers and Fabrics, 9, no. 4 (2014):97-107,
https://hdl.handle.net/21.15107/rcub_technorep_2705 .

TY  - JOUR
AU  - Obradović, Vera
AU  - Stojanović, Dušica
AU  - Kojović, Aleksandar
AU  - Živković, Irena
AU  - Radojević, Vesna
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2603
AB  - In this study, the electrospun nanofibers, nanoparticles and nanotubes were used as reinforcement in order to improve mechanical properties of materials for ballistic protection. The samples of polyurethane/p-aramid multiaxial fabric forms (Twaron fabrics and Colon fabrics) were impregnated with poly (vinyl butyral) (PVB) ethanol solution with the different content of reinforcement. Due to the improvement in mechanical, ballistic and impact properties, the surface modification of the fabrics with γ-aminopropyltriethoxysilane (AMEO silane)/ethanol solution was used and silica nanoparticles were modified with AMEO silane. This study is divided into three parts of research: electrospinning process, ballistic testing of the p-aramid composites and impact tester analysis of the Colon composites. The mechanical properties of all the composites were tested by the dynamic mechanical analysis (DMA).
AB  - U ovom istraživanju su se elektrospinovana vlakna, nanočestice i nanocevi koristili kao ojačanja koja bi unapredila mehanička svojstva materijala za balističku zaštitu. Uzorci poliuretan/paramidnih multiaksijalnih lamina (Twaron i Kolon lamine) su impregnisani sa poli(vinil butiral)(PVB)/etanol rastvorom sa različitim sadržajem ojačanja. Radi poboljšanja mehaničkih, balističkih i impakt svojstava, modifikovala se površina lamina sa γ-aminopropiltrietoksisilanom (AMEO silan)/etanol rastvorom i koristile su se silika nanočestice modifikovane AMEO silanom. Ovaj rad je podeljen na tri dela istraživanja: proces elektrospininga, balističko testiranje paramidnih kompozita i impakt tester analiza Kolon kompozita. Mehanička svojstva svih kompozita su bila testirana pomoću dinamičko mehaničke analize (DMA).
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Aramid composites impregnated with different reinforcement: Nanofibers, nanoparticles and nanotubes
T1  - Aramidni kompoziti impregnisani sa različitim ojačanjima - nanovlakna, nanočestice i nanocevi
EP  - 361
IS  - 4
SP  - 351
VL  - 55
DO  - 10.5937/ZasMat1404351O
ER  - 

@article{
author = "Obradović, Vera and Stojanović, Dušica and Kojović, Aleksandar and Živković, Irena and Radojević, Vesna and Uskoković, Petar and Aleksić, Radoslav",
year = "2014",
abstract = "In this study, the electrospun nanofibers, nanoparticles and nanotubes were used as reinforcement in order to improve mechanical properties of materials for ballistic protection. The samples of polyurethane/p-aramid multiaxial fabric forms (Twaron fabrics and Colon fabrics) were impregnated with poly (vinyl butyral) (PVB) ethanol solution with the different content of reinforcement. Due to the improvement in mechanical, ballistic and impact properties, the surface modification of the fabrics with γ-aminopropyltriethoxysilane (AMEO silane)/ethanol solution was used and silica nanoparticles were modified with AMEO silane. This study is divided into three parts of research: electrospinning process, ballistic testing of the p-aramid composites and impact tester analysis of the Colon composites. The mechanical properties of all the composites were tested by the dynamic mechanical analysis (DMA)., U ovom istraživanju su se elektrospinovana vlakna, nanočestice i nanocevi koristili kao ojačanja koja bi unapredila mehanička svojstva materijala za balističku zaštitu. Uzorci poliuretan/paramidnih multiaksijalnih lamina (Twaron i Kolon lamine) su impregnisani sa poli(vinil butiral)(PVB)/etanol rastvorom sa različitim sadržajem ojačanja. Radi poboljšanja mehaničkih, balističkih i impakt svojstava, modifikovala se površina lamina sa γ-aminopropiltrietoksisilanom (AMEO silan)/etanol rastvorom i koristile su se silika nanočestice modifikovane AMEO silanom. Ovaj rad je podeljen na tri dela istraživanja: proces elektrospininga, balističko testiranje paramidnih kompozita i impakt tester analiza Kolon kompozita. Mehanička svojstva svih kompozita su bila testirana pomoću dinamičko mehaničke analize (DMA).",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Aramid composites impregnated with different reinforcement: Nanofibers, nanoparticles and nanotubes, Aramidni kompoziti impregnisani sa različitim ojačanjima - nanovlakna, nanočestice i nanocevi",
pages = "361-351",
number = "4",
volume = "55",
doi = "10.5937/ZasMat1404351O"
}

Obradović, V., Stojanović, D., Kojović, A., Živković, I., Radojević, V., Uskoković, P.,& Aleksić, R.. (2014). Aramid composites impregnated with different reinforcement: Nanofibers, nanoparticles and nanotubes. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 55(4), 351-361.
https://doi.org/10.5937/ZasMat1404351O

Obradović V, Stojanović D, Kojović A, Živković I, Radojević V, Uskoković P, Aleksić R. Aramid composites impregnated with different reinforcement: Nanofibers, nanoparticles and nanotubes. in Zaštita materijala. 2014;55(4):351-361.
doi:10.5937/ZasMat1404351O .

Obradović, Vera, Stojanović, Dušica, Kojović, Aleksandar, Živković, Irena, Radojević, Vesna, Uskoković, Petar, Aleksić, Radoslav, "Aramid composites impregnated with different reinforcement: Nanofibers, nanoparticles and nanotubes" in Zaštita materijala, 55, no. 4 (2014):351-361,
https://doi.org/10.5937/ZasMat1404351O . .

TY  - JOUR
AU  - Dukali, Ramdan M.
AU  - Radović, Ivana M.
AU  - Stojanović, Dušica
AU  - Sević, Dragutin M.
AU  - Radojević, Vesna
AU  - Jocić, Dragan
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2693
AB  - The electrospinning of rhodamine B (RhB)-doped poly(methyl methacrylate) (PMMA) is presented as a promising technique for processing photoluminescent nanofibers. Nanofibers with concentrations of RhB in PMMA between 0.05 and 2.0 wt. % were studied. The FTIR spectrum, fiber morphology, thermal properties and optical properties of the nanofibers were investigated. Smooth, bead-free and nonporous nanofibers were obtained. Differential scanning calorimetry (DSC) results revealed that the glass transition temperature of the PMMA (T-g) increased with the increasing of RhB content up to 0.5 wt. % and thereafter decreased. The laser induced fluorescence (LIF) technique was used to study the fluorescence properties of the nanofibers. The maximum fluorescence emission was observed at a concentration of RhB of 0.2 wt. %.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers
EP  - 880
IS  - 7
SP  - 867
VL  - 79
DO  - 10.2298/JSC131014011D
ER  - 

@article{
author = "Dukali, Ramdan M. and Radović, Ivana M. and Stojanović, Dušica and Sević, Dragutin M. and Radojević, Vesna and Jocić, Dragan and Aleksić, Radoslav",
year = "2014",
abstract = "The electrospinning of rhodamine B (RhB)-doped poly(methyl methacrylate) (PMMA) is presented as a promising technique for processing photoluminescent nanofibers. Nanofibers with concentrations of RhB in PMMA between 0.05 and 2.0 wt. % were studied. The FTIR spectrum, fiber morphology, thermal properties and optical properties of the nanofibers were investigated. Smooth, bead-free and nonporous nanofibers were obtained. Differential scanning calorimetry (DSC) results revealed that the glass transition temperature of the PMMA (T-g) increased with the increasing of RhB content up to 0.5 wt. % and thereafter decreased. The laser induced fluorescence (LIF) technique was used to study the fluorescence properties of the nanofibers. The maximum fluorescence emission was observed at a concentration of RhB of 0.2 wt. %.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers",
pages = "880-867",
number = "7",
volume = "79",
doi = "10.2298/JSC131014011D"
}

Dukali, R. M., Radović, I. M., Stojanović, D., Sević, D. M., Radojević, V., Jocić, D.,& Aleksić, R.. (2014). Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 79(7), 867-880.
https://doi.org/10.2298/JSC131014011D

Dukali RM, Radović IM, Stojanović D, Sević DM, Radojević V, Jocić D, Aleksić R. Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers. in Journal of the Serbian Chemical Society. 2014;79(7):867-880.
doi:10.2298/JSC131014011D .

Dukali, Ramdan M., Radović, Ivana M., Stojanović, Dušica, Sević, Dragutin M., Radojević, Vesna, Jocić, Dragan, Aleksić, Radoslav, "Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers" in Journal of the Serbian Chemical Society, 79, no. 7 (2014):867-880,
https://doi.org/10.2298/JSC131014011D . .

TY  - JOUR
AU  - Radović, Ivana M.
AU  - Dukali, Radman A.
AU  - Yerro, Omar
AU  - Stojanović, Dušica
AU  - Uskoković, Petar
AU  - Radojević, Vesna
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2593
AB  - In this paper the process of electrospinning of PMMA nanofibers was investigated. The influence of process parameters (type of solvent, solution concentration, flow rate, distance of needle and collector) on the nanofibers diameter uniformity and porosity was investigated. Characterization of obtained samples was performed by FTIR, DSC, SEM and Image-pro picture analisys. The optimal process parameters were defined.
AB  - U okviru ovog rada ispitivana je mogućnost dobijanja poli-(metilmetakrilat)nih (PMMA) vlakana metodom elektropredenja (electrosinning.) Primenom različitih procesnih parametara (rastvarača, koncentracije rastvora, protoka rastvora i rastojanja izmenu vrha igle i kolektora bilo je moguće ispitati uticaj ovih parametara na ravnomernost prečnika i kvalitet dobijenih vlakana. Karakterizacija dobijenih vlakana izvedena je primenom FTIR metode, DSC metode, skenirajuće elektronske mikroskopije (SEM) i metodom analize slike Image-pro. Na ovaj našin odreneni su najoptimalniji procesni parametri za dobijanje nanovlakana ravnomernog prečnika i bez poroznosti.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Infuence of solvent on the stability of electrospinning of PMMA nanofibers
T1  - Uticaj rastvarača na stabilnost procesa elektropredenja polimernih nanovlakana
EP  - 23
IS  - 1
SP  - 19
VL  - 69
DO  - 10.5937/tehnika1401019R
ER  - 

@article{
author = "Radović, Ivana M. and Dukali, Radman A. and Yerro, Omar and Stojanović, Dušica and Uskoković, Petar and Radojević, Vesna and Aleksić, Radoslav",
year = "2014",
abstract = "In this paper the process of electrospinning of PMMA nanofibers was investigated. The influence of process parameters (type of solvent, solution concentration, flow rate, distance of needle and collector) on the nanofibers diameter uniformity and porosity was investigated. Characterization of obtained samples was performed by FTIR, DSC, SEM and Image-pro picture analisys. The optimal process parameters were defined., U okviru ovog rada ispitivana je mogućnost dobijanja poli-(metilmetakrilat)nih (PMMA) vlakana metodom elektropredenja (electrosinning.) Primenom različitih procesnih parametara (rastvarača, koncentracije rastvora, protoka rastvora i rastojanja izmenu vrha igle i kolektora bilo je moguće ispitati uticaj ovih parametara na ravnomernost prečnika i kvalitet dobijenih vlakana. Karakterizacija dobijenih vlakana izvedena je primenom FTIR metode, DSC metode, skenirajuće elektronske mikroskopije (SEM) i metodom analize slike Image-pro. Na ovaj našin odreneni su najoptimalniji procesni parametri za dobijanje nanovlakana ravnomernog prečnika i bez poroznosti.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Infuence of solvent on the stability of electrospinning of PMMA nanofibers, Uticaj rastvarača na stabilnost procesa elektropredenja polimernih nanovlakana",
pages = "23-19",
number = "1",
volume = "69",
doi = "10.5937/tehnika1401019R"
}

Radović, I. M., Dukali, R. A., Yerro, O., Stojanović, D., Uskoković, P., Radojević, V.,& Aleksić, R.. (2014). Infuence of solvent on the stability of electrospinning of PMMA nanofibers. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 69(1), 19-23.
https://doi.org/10.5937/tehnika1401019R

Radović IM, Dukali RA, Yerro O, Stojanović D, Uskoković P, Radojević V, Aleksić R. Infuence of solvent on the stability of electrospinning of PMMA nanofibers. in Tehnika. 2014;69(1):19-23.
doi:10.5937/tehnika1401019R .

Radović, Ivana M., Dukali, Radman A., Yerro, Omar, Stojanović, Dušica, Uskoković, Petar, Radojević, Vesna, Aleksić, Radoslav, "Infuence of solvent on the stability of electrospinning of PMMA nanofibers" in Tehnika, 69, no. 1 (2014):19-23,
https://doi.org/10.5937/tehnika1401019R . .