TY  - JOUR
AU  - Stojanovic, Dusica
AU  - Brajović, Ljiljana
AU  - Obradovic, Vera
AU  - Mijailovic, Daniel
AU  - Dramlic, Dragan
AU  - Kojovic, Aleksandar
AU  - Uskokovic, Petar
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1946
AB  - The composite nanofibers were used as reinforcement in acrylic polymer for the overall enhancement of thermomechanical
properties, adhesion between fibers and matrix, and fracture toughness of the final nanocomposite
since acrylic materials lack of this feature. So, a good balance between hardness/toughness and transparency is
obtained with the addition of poly (vinyl butyral) (PVB) and titania (TiO2) nanofibers simultaneously and
controlling their contents. Specifically, when compared to that of pure acrylic polymer, the fracture toughness of
the PMMA nanocomposite apparently increased 55 % with the addition of 3 wt.% titania nanoparticles, while
the produced nanocomposite maintained high transmittance above 75–80% in the visible domain. The transmission
spectrum modelling of the reinforced fiber materials and hybrid acrylic composites using Mie scattering
theory for different particle sizes and particle content is presented. The calculated transmission coefficients
versus wavelength are compared with the experimental ones.
PB  - Elsevier
T2  - Progress in Organic Coatings
T1  - Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance
SP  - 105437
VL  - 139
VL  - 139
DO  - 10.1016/j.porgcoat.2019.105437
ER  - 

@article{
author = "Stojanovic, Dusica and Brajović, Ljiljana and Obradovic, Vera and Mijailovic, Daniel and Dramlic, Dragan and Kojovic, Aleksandar and Uskokovic, Petar",
year = "2020",
abstract = "The composite nanofibers were used as reinforcement in acrylic polymer for the overall enhancement of thermomechanical
properties, adhesion between fibers and matrix, and fracture toughness of the final nanocomposite
since acrylic materials lack of this feature. So, a good balance between hardness/toughness and transparency is
obtained with the addition of poly (vinyl butyral) (PVB) and titania (TiO2) nanofibers simultaneously and
controlling their contents. Specifically, when compared to that of pure acrylic polymer, the fracture toughness of
the PMMA nanocomposite apparently increased 55 % with the addition of 3 wt.% titania nanoparticles, while
the produced nanocomposite maintained high transmittance above 75–80% in the visible domain. The transmission
spectrum modelling of the reinforced fiber materials and hybrid acrylic composites using Mie scattering
theory for different particle sizes and particle content is presented. The calculated transmission coefficients
versus wavelength are compared with the experimental ones.",
publisher = "Elsevier",
journal = "Progress in Organic Coatings",
title = "Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance",
pages = "105437",
volume = "139, 139",
doi = "10.1016/j.porgcoat.2019.105437"
}

Stojanovic, D., Brajović, L., Obradovic, V., Mijailovic, D., Dramlic, D., Kojovic, A.,& Uskokovic, P.. (2020). Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance. in Progress in Organic Coatings
Elsevier., 139, 105437.
https://doi.org/10.1016/j.porgcoat.2019.105437

Stojanovic D, Brajović L, Obradovic V, Mijailovic D, Dramlic D, Kojovic A, Uskokovic P. Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance. in Progress in Organic Coatings. 2020;139:105437.
doi:10.1016/j.porgcoat.2019.105437 .

Stojanovic, Dusica, Brajović, Ljiljana, Obradovic, Vera, Mijailovic, Daniel, Dramlic, Dragan, Kojovic, Aleksandar, Uskokovic, Petar, "Hybrid acrylic nanocomposites with excellent transparency and hardness/toughness balance" in Progress in Organic Coatings, 139 (2020):105437,
https://doi.org/10.1016/j.porgcoat.2019.105437 . .

TY  - JOUR
AU  - El Swie, H.
AU  - Radojević, Vesna
AU  - Brajović, Ljiljana
AU  - Stajic-Trosić, J.
AU  - Cosović, V.
AU  - Grujić, A.
AU  - Aleksić, Radoslav
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/706
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.
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_grafar_706
ER  - 

@article{
author = "El Swie, H. and Radojević, Vesna and Brajović, Ljiljana and Stajic-Trosić, J. and Cosović, V. and Grujić, A. 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.",
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_grafar_706"
}

El Swie, H., Radojević, V., Brajović, L., Stajic-Trosić, J., Cosović, V., Grujić, A.,& Aleksić, R.. (2015). Synthesis and performance of polymer based magnetic composite sensing element. in Digest Journal of Nanomaterials and Biostructures, 10(4), 1475-1483.
https://hdl.handle.net/21.15107/rcub_grafar_706

El Swie H, Radojević V, Brajović L, Stajic-Trosić J, Cosović 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_grafar_706 .

El Swie, H., Radojević, Vesna, Brajović, Ljiljana, Stajic-Trosić, J., Cosović, V., Grujić, A., 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_grafar_706 .

TY  - JOUR
AU  - Ilić, Nikola I.
AU  - Lazarević, Slavica S.
AU  - Rajaković-Ognjanović, Vladana
AU  - Rajaković, Ljubinka V.
AU  - Janacković, Đorđe T.
AU  - Petrović, Rada D.
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/611
AB  - The sorption of inorganic arsenic species, As(III) and As(V), from water by sepiolite modified with hydrated iron(III) oxide was investigated at 25 degrees C through batch studies. The influence of the initial pH value, the initial As concentration, the contact time and the type of water on the sorption capacity was investigated. Two types of water were used, deionised and groundwater. The maximal sorption capacity for As(III) dissolved in deionised water was observed at an initial and final pH value 7.0, while the bonding of As(V) was observed to be almost pH independent for pH value in the range from 2.0 to 7.0, while a significant decrease in the sorption capacity was observed at pH values above 7.0. The sorption capacity at initial pH 7.0 was about 10 mg g(-1) for As(III) and 4.2 mg g(-1) for As(V) in deionised water. The capacity in groundwater was decreased by 40 % for As(III) and by 20 % for As(V). The Langmuir model and pseudo-second order kinetic model revealed good agreement with the experimental results. The results showed that Fe(III)-modified sepiolite exhibits significant affinity for arsenic removal and it has the potential for application in water purification processes.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - The sorption of inorganic arsenic on modified sepiolite: the effect of hydrated iron(III) oxide
EP  - 828
IS  - 7
SP  - 815
VL  - 79
DO  - 10.2298/JSC130912017I
ER  - 

@article{
author = "Ilić, Nikola I. and Lazarević, Slavica S. and Rajaković-Ognjanović, Vladana and Rajaković, Ljubinka V. and Janacković, Đorđe T. and Petrović, Rada D.",
year = "2014",
abstract = "The sorption of inorganic arsenic species, As(III) and As(V), from water by sepiolite modified with hydrated iron(III) oxide was investigated at 25 degrees C through batch studies. The influence of the initial pH value, the initial As concentration, the contact time and the type of water on the sorption capacity was investigated. Two types of water were used, deionised and groundwater. The maximal sorption capacity for As(III) dissolved in deionised water was observed at an initial and final pH value 7.0, while the bonding of As(V) was observed to be almost pH independent for pH value in the range from 2.0 to 7.0, while a significant decrease in the sorption capacity was observed at pH values above 7.0. The sorption capacity at initial pH 7.0 was about 10 mg g(-1) for As(III) and 4.2 mg g(-1) for As(V) in deionised water. The capacity in groundwater was decreased by 40 % for As(III) and by 20 % for As(V). The Langmuir model and pseudo-second order kinetic model revealed good agreement with the experimental results. The results showed that Fe(III)-modified sepiolite exhibits significant affinity for arsenic removal and it has the potential for application in water purification processes.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "The sorption of inorganic arsenic on modified sepiolite: the effect of hydrated iron(III) oxide",
pages = "828-815",
number = "7",
volume = "79",
doi = "10.2298/JSC130912017I"
}

Ilić, N. I., Lazarević, S. S., Rajaković-Ognjanović, V., Rajaković, L. V., Janacković, Đ. T.,& Petrović, R. D.. (2014). The sorption of inorganic arsenic on modified sepiolite: the effect of hydrated iron(III) oxide. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 79(7), 815-828.
https://doi.org/10.2298/JSC130912017I

Ilić NI, Lazarević SS, Rajaković-Ognjanović V, Rajaković LV, Janacković ĐT, Petrović RD. The sorption of inorganic arsenic on modified sepiolite: the effect of hydrated iron(III) oxide. in Journal of the Serbian Chemical Society. 2014;79(7):815-828.
doi:10.2298/JSC130912017I .

Ilić, Nikola I., Lazarević, Slavica S., Rajaković-Ognjanović, Vladana, Rajaković, Ljubinka V., Janacković, Đorđe T., Petrović, Rada D., "The sorption of inorganic arsenic on modified sepiolite: the effect of hydrated iron(III) oxide" in Journal of the Serbian Chemical Society, 79, no. 7 (2014):815-828,
https://doi.org/10.2298/JSC130912017I . .