TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Lu, Chun-An
AU  - Paunović, Vesna
AU  - Radović, Ivana M.
AU  - Stajčić, Aleksandar
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9010
AB  - The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.
T2  - Applied Sciences
T1  - The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers
VL  - 10
IS  - 10
SP  - 3485
DO  - 10.3390/app10103485
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Lu, Chun-An and Paunović, Vesna and Radović, Ivana M. and Stajčić, Aleksandar and Vlahović, Branislav",
year = "2020",
abstract = "The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.",
journal = "Applied Sciences",
title = "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers",
volume = "10",
number = "10",
pages = "3485",
doi = "10.3390/app10103485"
}

Mitić, V. V., Lazović, G., Lu, C., Paunović, V., Radović, I. M., Stajčić, A.,& Vlahović, B.. (2020). The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences, 10(10), 3485.
https://doi.org/10.3390/app10103485

Mitić VV, Lazović G, Lu C, Paunović V, Radović IM, Stajčić A, Vlahović B. The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences. 2020;10(10):3485.
doi:10.3390/app10103485 .

Mitić, Vojislav V., Lazović, Goran, Lu, Chun-An, Paunović, Vesna, Radović, Ivana M., Stajčić, Aleksandar, Vlahović, Branislav, "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers" in Applied Sciences, 10, no. 10 (2020):3485,
https://doi.org/10.3390/app10103485 . .

TY  - JOUR
AU  - Janićijević, Željko
AU  - Vujčić, Ivica
AU  - Veljović, Đorđe N.
AU  - Vujisić, Miloš Lj.
AU  - Radovanović, Filip
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8514
AB  - Composite hydrogels capable of controlled drug delivery via ion exchange are an interesting group of materials for the construction of implantable drug reservoirs for electrically charged drugs. In this study, we synthesized composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) (PLGA-PAA) hydrogels by sequential application of UV or gamma irradiation and traditional phase inversion. Physicochemical properties of the composite PLGA-PAA hydrogels were investigated using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). We examined the ion exchange capacity (IEC) and swelling behavior of these materials to determine their potential as drug reservoirs. Composite PLGA-PAA hydrogel synthesized using UV irradiation (UV-PLGA-PAA) exhibited a porous microstructure with submicron-sized hydrogel-rich aggregates and homogeneous chemical composition. Swelling behavior and IEC of this material were highly reproducible. Composite PLGA-PAA hydrogels synthesized using gamma irradiation (G-PLGA-PAAs) had a less uniform microstructure with larger pores and micron-sized hydrogel-rich aggregates while exhibiting rather inhomogeneous chemical composition. These materials showed superior swelling properties, but a more variable IEC, compared to the material fabricated using UV irradiation. Results of DSC analysis showed a dose-dependent decrease in glass transition temperature for G-PLGA-PAAs indicating the effects of PLGA chain scission. Our findings indicate that gamma irradiation is a possible alternative to UV irradiation in the synthesis of composite PLGA-PAA hydrogels which can modify or control important material properties. However, the synthesis protocol using gamma irradiation should be further optimized to improve the IEC reproducibility. In our future research, we will investigate the in vitro release of charged drugs from synthesized composite PLGA-PAA hydrogels under physiological conditions. © 2019 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties
VL  - 166
SP  - 108466
DO  - 10.1016/j.radphyschem.2019.108466
ER  - 

@article{
author = "Janićijević, Željko and Vujčić, Ivica and Veljović, Đorđe N. and Vujisić, Miloš Lj. and Radovanović, Filip",
year = "2020",
abstract = "Composite hydrogels capable of controlled drug delivery via ion exchange are an interesting group of materials for the construction of implantable drug reservoirs for electrically charged drugs. In this study, we synthesized composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) (PLGA-PAA) hydrogels by sequential application of UV or gamma irradiation and traditional phase inversion. Physicochemical properties of the composite PLGA-PAA hydrogels were investigated using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). We examined the ion exchange capacity (IEC) and swelling behavior of these materials to determine their potential as drug reservoirs. Composite PLGA-PAA hydrogel synthesized using UV irradiation (UV-PLGA-PAA) exhibited a porous microstructure with submicron-sized hydrogel-rich aggregates and homogeneous chemical composition. Swelling behavior and IEC of this material were highly reproducible. Composite PLGA-PAA hydrogels synthesized using gamma irradiation (G-PLGA-PAAs) had a less uniform microstructure with larger pores and micron-sized hydrogel-rich aggregates while exhibiting rather inhomogeneous chemical composition. These materials showed superior swelling properties, but a more variable IEC, compared to the material fabricated using UV irradiation. Results of DSC analysis showed a dose-dependent decrease in glass transition temperature for G-PLGA-PAAs indicating the effects of PLGA chain scission. Our findings indicate that gamma irradiation is a possible alternative to UV irradiation in the synthesis of composite PLGA-PAA hydrogels which can modify or control important material properties. However, the synthesis protocol using gamma irradiation should be further optimized to improve the IEC reproducibility. In our future research, we will investigate the in vitro release of charged drugs from synthesized composite PLGA-PAA hydrogels under physiological conditions. © 2019 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties",
volume = "166",
pages = "108466",
doi = "10.1016/j.radphyschem.2019.108466"
}

Janićijević, Ž., Vujčić, I., Veljović, Đ. N., Vujisić, M. Lj.,& Radovanović, F.. (2020). Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. in Radiation Physics and Chemistry, 166, 108466.
https://doi.org/10.1016/j.radphyschem.2019.108466

Janićijević Ž, Vujčić I, Veljović ĐN, Vujisić ML, Radovanović F. Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. in Radiation Physics and Chemistry. 2020;166:108466.
doi:10.1016/j.radphyschem.2019.108466 .

Janićijević, Željko, Vujčić, Ivica, Veljović, Đorđe N., Vujisić, Miloš Lj., Radovanović, Filip, "Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties" in Radiation Physics and Chemistry, 166 (2020):108466,
https://doi.org/10.1016/j.radphyschem.2019.108466 . .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Spasojević, Vojislav
AU  - Dapčević, Aleksandra
AU  - Vuković, Zorica M.
AU  - Pavlović, Vladimir B.
AU  - Ranđelović, Danijela
AU  - Nastasović, Aleksandra B.
PY  - 2019
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0367-598X1901025M
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8148
AB  - Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful amino-functionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer. © 2019, Association of Chemists and Chemical Engineers of Serbia. All rights reserved.
T2  - Hemijska industrija
T1  - Characterization of glycidyl methacrylate based magnetic nanocomposites
VL  - 73
IS  - 1
SP  - 25
EP  - 35
DO  - 10.2298/HEMIND181113006M
ER  - 

@article{
author = "Marković, Bojana M. and Spasojević, Vojislav and Dapčević, Aleksandra and Vuković, Zorica M. and Pavlović, Vladimir B. and Ranđelović, Danijela and Nastasović, Aleksandra B.",
year = "2019",
abstract = "Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful amino-functionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer. © 2019, Association of Chemists and Chemical Engineers of Serbia. All rights reserved.",
journal = "Hemijska industrija",
title = "Characterization of glycidyl methacrylate based magnetic nanocomposites",
volume = "73",
number = "1",
pages = "25-35",
doi = "10.2298/HEMIND181113006M"
}

Marković, B. M., Spasojević, V., Dapčević, A., Vuković, Z. M., Pavlović, V. B., Ranđelović, D.,& Nastasović, A. B.. (2019). Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija, 73(1), 25-35.
https://doi.org/10.2298/HEMIND181113006M

Marković BM, Spasojević V, Dapčević A, Vuković ZM, Pavlović VB, Ranđelović D, Nastasović AB. Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija. 2019;73(1):25-35.
doi:10.2298/HEMIND181113006M .

Marković, Bojana M., Spasojević, Vojislav, Dapčević, Aleksandra, Vuković, Zorica M., Pavlović, Vladimir B., Ranđelović, Danijela, Nastasović, Aleksandra B., "Characterization of glycidyl methacrylate based magnetic nanocomposites" in Hemijska industrija, 73, no. 1 (2019):25-35,
https://doi.org/10.2298/HEMIND181113006M . .

TY  - CONF
AU  - Ekmeščić, Bojana
AU  - Janković, Drina
AU  - Vukadinović, Aleksandar
AU  - Ranđelović, Dragana
AU  - Stefanović, I. S.
AU  - Nastasović, Aleksandra B.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9254
AB  - A novel magnetic macroporous poly(glycidyl-co-ethylene glycol
dimethacrylate) (mPGME) synthesized by suspension copolymerization and
functionalized with diethylene triamine (mPGME-deta) was evaluated as
sorbent for pertechnetate ion (TcO4
-
) removal from aqueous solutions.
Atomic force microscopy (AFM) was used for characterization. The kinetics
of TcO4
-
adsorption onto mPGME-deta is relatively fast and depends on pH.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
T1  - A novel Tc 99m sorbent based on macroporous magnetic polymer
SP  - 641
EP  - 644
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9254
ER  - 

@conference{
author = "Ekmeščić, Bojana and Janković, Drina and Vukadinović, Aleksandar and Ranđelović, Dragana and Stefanović, I. S. and Nastasović, Aleksandra B.",
year = "2016",
abstract = "A novel magnetic macroporous poly(glycidyl-co-ethylene glycol
dimethacrylate) (mPGME) synthesized by suspension copolymerization and
functionalized with diethylene triamine (mPGME-deta) was evaluated as
sorbent for pertechnetate ion (TcO4
-
) removal from aqueous solutions.
Atomic force microscopy (AFM) was used for characterization. The kinetics
of TcO4
-
adsorption onto mPGME-deta is relatively fast and depends on pH.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry",
title = "A novel Tc 99m sorbent based on macroporous magnetic polymer",
pages = "641-644",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9254"
}

Ekmeščić, B., Janković, D., Vukadinović, A., Ranđelović, D., Stefanović, I. S.,& Nastasović, A. B.. (2016). A novel Tc 99m sorbent based on macroporous magnetic polymer. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 641-644.
https://hdl.handle.net/21.15107/rcub_vinar_9254

Ekmeščić B, Janković D, Vukadinović A, Ranđelović D, Stefanović IS, Nastasović AB. A novel Tc 99m sorbent based on macroporous magnetic polymer. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry. 2016;:641-644.
https://hdl.handle.net/21.15107/rcub_vinar_9254 .

Ekmeščić, Bojana, Janković, Drina, Vukadinović, Aleksandar, Ranđelović, Dragana, Stefanović, I. S., Nastasović, Aleksandra B., "A novel Tc 99m sorbent based on macroporous magnetic polymer" in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry (2016):641-644,
https://hdl.handle.net/21.15107/rcub_vinar_9254 .

TY  - JOUR
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Grgur, Branimir
AU  - Nastasović, Aleksandra B.
AU  - Vasiljević-Radović, Dana
AU  - Onjia, Antonije E.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1080
AB  - A novel method combining a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution was used to prepare asymmetric polyethersulfone membranes with submicron particles incorporating glycidyl methacrylate copolymer. In order to introduce sulfonic groups, the epoxide rings of glycidyl methacrylate were opened using two methods. The first method was functionalization with sodium sulfite, and the second was functionalization with sulfuric acid and then grafting with 2-acrylamido-2-methylpropanesulfonic acid. The obtained membranes were characterized using infrared spectroscopy, conductometric titration and water permeability measurements. Scanning electron microscopy and atomic force microscopy were used to investigate the surface morphology and topology of the membranes. Dynamic adsorption of rhodamine B as a model dye was used to demonstrate the suitability of these novel membranes for membrane adsorption since the adsorption capacity for dye cations was much better for the membranes functionalized with sodium sulfite and the membranes grafted with 2-acrylamido-2-methylpropanesulfonic acid compared to the non-functionalized membranes.
T2  - Journal of the Serbian Chemical Society
T1  - Novel negatively charged membrane adsorbers made using a combination of photopolymerization and immersion precipitation
VL  - 81
IS  - 4
SP  - 419
EP  - 431
DO  - 10.2298/JSC150805083T
ER  - 

@article{
author = "Tomković, Tanja and Radovanović, Filip and Grgur, Branimir and Nastasović, Aleksandra B. and Vasiljević-Radović, Dana and Onjia, Antonije E.",
year = "2016",
abstract = "A novel method combining a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution was used to prepare asymmetric polyethersulfone membranes with submicron particles incorporating glycidyl methacrylate copolymer. In order to introduce sulfonic groups, the epoxide rings of glycidyl methacrylate were opened using two methods. The first method was functionalization with sodium sulfite, and the second was functionalization with sulfuric acid and then grafting with 2-acrylamido-2-methylpropanesulfonic acid. The obtained membranes were characterized using infrared spectroscopy, conductometric titration and water permeability measurements. Scanning electron microscopy and atomic force microscopy were used to investigate the surface morphology and topology of the membranes. Dynamic adsorption of rhodamine B as a model dye was used to demonstrate the suitability of these novel membranes for membrane adsorption since the adsorption capacity for dye cations was much better for the membranes functionalized with sodium sulfite and the membranes grafted with 2-acrylamido-2-methylpropanesulfonic acid compared to the non-functionalized membranes.",
journal = "Journal of the Serbian Chemical Society",
title = "Novel negatively charged membrane adsorbers made using a combination of photopolymerization and immersion precipitation",
volume = "81",
number = "4",
pages = "419-431",
doi = "10.2298/JSC150805083T"
}

Tomković, T., Radovanović, F., Grgur, B., Nastasović, A. B., Vasiljević-Radović, D.,& Onjia, A. E.. (2016). Novel negatively charged membrane adsorbers made using a combination of photopolymerization and immersion precipitation. in Journal of the Serbian Chemical Society, 81(4), 419-431.
https://doi.org/10.2298/JSC150805083T

Tomković T, Radovanović F, Grgur B, Nastasović AB, Vasiljević-Radović D, Onjia AE. Novel negatively charged membrane adsorbers made using a combination of photopolymerization and immersion precipitation. in Journal of the Serbian Chemical Society. 2016;81(4):419-431.
doi:10.2298/JSC150805083T .

Tomković, Tanja, Radovanović, Filip, Grgur, Branimir, Nastasović, Aleksandra B., Vasiljević-Radović, Dana, Onjia, Antonije E., "Novel negatively charged membrane adsorbers made using a combination of photopolymerization and immersion precipitation" in Journal of the Serbian Chemical Society, 81, no. 4 (2016):419-431,
https://doi.org/10.2298/JSC150805083T . .

TY  - JOUR
AU  - Nastasović, Aleksandra B.
AU  - Ekmescic, Bojana M.
AU  - Sandić, Zvjezdana
AU  - Ranđelović, Danijela V.
AU  - Mozetic, Miran
AU  - Vesel, Alenka
AU  - Onjia, Antonije E.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1201
AB  - The mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (PGME) functionalized by reaction of the pendant epoxy groups with diethylene triamine (PGME-deta) was studied using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) analysis. Atomic force microscopy (AFM) and scanning energy-dispersive X-ray spectroscopy (SEM-EDX) were used for the determination of surface morphology of the copolymer particles. The sorption behavior of heavy metals Cu(II), Cd(II) and Pb(II) ions sorption was investigated in batch static experiments under non-competitive conditions at room temperature (298 K). The obtained results were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion kinetic model. The kinetics studies showed that Cu(II), Cd(II) and Pb(II) sorption obeys the pseudo-second-order model under all investigated operating conditions with evident influence of pore diffusion. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)
VL  - 385
SP  - 605
EP  - 615
DO  - 10.1016/j.apsusc.2016.05.165
ER  - 

@article{
author = "Nastasović, Aleksandra B. and Ekmescic, Bojana M. and Sandić, Zvjezdana and Ranđelović, Danijela V. and Mozetic, Miran and Vesel, Alenka and Onjia, Antonije E.",
year = "2016",
abstract = "The mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (PGME) functionalized by reaction of the pendant epoxy groups with diethylene triamine (PGME-deta) was studied using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) analysis. Atomic force microscopy (AFM) and scanning energy-dispersive X-ray spectroscopy (SEM-EDX) were used for the determination of surface morphology of the copolymer particles. The sorption behavior of heavy metals Cu(II), Cd(II) and Pb(II) ions sorption was investigated in batch static experiments under non-competitive conditions at room temperature (298 K). The obtained results were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion kinetic model. The kinetics studies showed that Cu(II), Cd(II) and Pb(II) sorption obeys the pseudo-second-order model under all investigated operating conditions with evident influence of pore diffusion. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)",
volume = "385",
pages = "605-615",
doi = "10.1016/j.apsusc.2016.05.165"
}

Nastasović, A. B., Ekmescic, B. M., Sandić, Z., Ranđelović, D. V., Mozetic, M., Vesel, A.,& Onjia, A. E.. (2016). Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate). in Applied Surface Science, 385, 605-615.
https://doi.org/10.1016/j.apsusc.2016.05.165

Nastasović AB, Ekmescic BM, Sandić Z, Ranđelović DV, Mozetic M, Vesel A, Onjia AE. Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate). in Applied Surface Science. 2016;385:605-615.
doi:10.1016/j.apsusc.2016.05.165 .

Nastasović, Aleksandra B., Ekmescic, Bojana M., Sandić, Zvjezdana, Ranđelović, Danijela V., Mozetic, Miran, Vesel, Alenka, Onjia, Antonije E., "Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)" in Applied Surface Science, 385 (2016):605-615,
https://doi.org/10.1016/j.apsusc.2016.05.165 . .

TY  - JOUR
AU  - Stajčić, Aleksandar
AU  - Nastasović, Aleksandra B.
AU  - Stajić-Trošić, Jasna T.
AU  - Marković, Jelena P.
AU  - Onjia, Antonije E.
AU  - Radovanović, Filip
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7530
AB  - Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly(acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2–3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model.
PB  - Elsevier
T2  - Journal of Environmental Chemical Engineering
T1  - Novel membrane-supported hydrogel for removal of heavy metals
VL  - 3
IS  - 1
SP  - 453
EP  - 461
DO  - 10.1016/j.jece.2015.01.005
ER  - 

@article{
author = "Stajčić, Aleksandar and Nastasović, Aleksandra B. and Stajić-Trošić, Jasna T. and Marković, Jelena P. and Onjia, Antonije E. and Radovanović, Filip",
year = "2015",
abstract = "Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly(acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2–3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model.",
publisher = "Elsevier",
journal = "Journal of Environmental Chemical Engineering",
title = "Novel membrane-supported hydrogel for removal of heavy metals",
volume = "3",
number = "1",
pages = "453-461",
doi = "10.1016/j.jece.2015.01.005"
}

Stajčić, A., Nastasović, A. B., Stajić-Trošić, J. T., Marković, J. P., Onjia, A. E.,& Radovanović, F.. (2015). Novel membrane-supported hydrogel for removal of heavy metals. in Journal of Environmental Chemical Engineering
Elsevier., 3(1), 453-461.
https://doi.org/10.1016/j.jece.2015.01.005

Stajčić A, Nastasović AB, Stajić-Trošić JT, Marković JP, Onjia AE, Radovanović F. Novel membrane-supported hydrogel for removal of heavy metals. in Journal of Environmental Chemical Engineering. 2015;3(1):453-461.
doi:10.1016/j.jece.2015.01.005 .

Stajčić, Aleksandar, Nastasović, Aleksandra B., Stajić-Trošić, Jasna T., Marković, Jelena P., Onjia, Antonije E., Radovanović, Filip, "Novel membrane-supported hydrogel for removal of heavy metals" in Journal of Environmental Chemical Engineering, 3, no. 1 (2015):453-461,
https://doi.org/10.1016/j.jece.2015.01.005 . .

TY  - JOUR
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra B.
AU  - Vasiljević-Radović, Dana
AU  - Marković, Jelena P.
AU  - Grgur, Branimir
AU  - Onjia, Antonije E.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/383
AB  - Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked poly(glycidyl methacrylate-co-2-acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a traditional liquid phase inversion process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. Scanning electron microscope images of the membrane cross-section revealed a hybrid structure with an interconnected network of submicron particles embedded within the porous polyethersulfone support. Permeation of toluidine blue solutions through non-functionalized membranes showed a dramatic effect of 2-acrylamido-2-methylpropane sulfonic acid concentration in the casting solution on the dynamic adsorption performance. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of dilute Cu2+ solutions through functionalized membranes demonstrated that the plate height for some of these membranes was an order of magnitude smaller than for commercial particle-filled membranes used in solid phase extraction. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - European Polymer Journal
T1  - Solid phase extraction membranes with submicron multifunctional adsorbent particles
VL  - 63
SP  - 90
EP  - 100
DO  - 10.1016/j.eurpolymj.2014.12.015
ER  - 

@article{
author = "Tomković, Tanja and Radovanović, Filip and Nastasović, Aleksandra B. and Vasiljević-Radović, Dana and Marković, Jelena P. and Grgur, Branimir and Onjia, Antonije E.",
year = "2015",
abstract = "Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked poly(glycidyl methacrylate-co-2-acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a traditional liquid phase inversion process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. Scanning electron microscope images of the membrane cross-section revealed a hybrid structure with an interconnected network of submicron particles embedded within the porous polyethersulfone support. Permeation of toluidine blue solutions through non-functionalized membranes showed a dramatic effect of 2-acrylamido-2-methylpropane sulfonic acid concentration in the casting solution on the dynamic adsorption performance. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of dilute Cu2+ solutions through functionalized membranes demonstrated that the plate height for some of these membranes was an order of magnitude smaller than for commercial particle-filled membranes used in solid phase extraction. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "European Polymer Journal",
title = "Solid phase extraction membranes with submicron multifunctional adsorbent particles",
volume = "63",
pages = "90-100",
doi = "10.1016/j.eurpolymj.2014.12.015"
}

Tomković, T., Radovanović, F., Nastasović, A. B., Vasiljević-Radović, D., Marković, J. P., Grgur, B.,& Onjia, A. E.. (2015). Solid phase extraction membranes with submicron multifunctional adsorbent particles. in European Polymer Journal, 63, 90-100.
https://doi.org/10.1016/j.eurpolymj.2014.12.015

Tomković T, Radovanović F, Nastasović AB, Vasiljević-Radović D, Marković JP, Grgur B, Onjia AE. Solid phase extraction membranes with submicron multifunctional adsorbent particles. in European Polymer Journal. 2015;63:90-100.
doi:10.1016/j.eurpolymj.2014.12.015 .

Tomković, Tanja, Radovanović, Filip, Nastasović, Aleksandra B., Vasiljević-Radović, Dana, Marković, Jelena P., Grgur, Branimir, Onjia, Antonije E., "Solid phase extraction membranes with submicron multifunctional adsorbent particles" in European Polymer Journal, 63 (2015):90-100,
https://doi.org/10.1016/j.eurpolymj.2014.12.015 . .

TY  - JOUR
AU  - Stajcic, Aleksandar
AU  - Nastasović, Aleksandra B.
AU  - Stajić-Trošić, Jasna T.
AU  - Marković, Jelena P.
AU  - Onjia, Antonije E.
AU  - Radovanović, Filip
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2751
AB  - Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly (acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2-3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Journal of Environmental Chemical Engineering
T1  - Novel membrane-supported hydrogel for removal of heavy metals
VL  - 3
IS  - 1
SP  - 453
EP  - 461
DO  - 10.1016/j.jece.2015.01.005
ER  - 

@article{
author = "Stajcic, Aleksandar and Nastasović, Aleksandra B. and Stajić-Trošić, Jasna T. and Marković, Jelena P. and Onjia, Antonije E. and Radovanović, Filip",
year = "2015",
abstract = "Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly (acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2-3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Journal of Environmental Chemical Engineering",
title = "Novel membrane-supported hydrogel for removal of heavy metals",
volume = "3",
number = "1",
pages = "453-461",
doi = "10.1016/j.jece.2015.01.005"
}

Stajcic, A., Nastasović, A. B., Stajić-Trošić, J. T., Marković, J. P., Onjia, A. E.,& Radovanović, F.. (2015). Novel membrane-supported hydrogel for removal of heavy metals. in Journal of Environmental Chemical Engineering, 3(1), 453-461.
https://doi.org/10.1016/j.jece.2015.01.005

Stajcic A, Nastasović AB, Stajić-Trošić JT, Marković JP, Onjia AE, Radovanović F. Novel membrane-supported hydrogel for removal of heavy metals. in Journal of Environmental Chemical Engineering. 2015;3(1):453-461.
doi:10.1016/j.jece.2015.01.005 .

Stajcic, Aleksandar, Nastasović, Aleksandra B., Stajić-Trošić, Jasna T., Marković, Jelena P., Onjia, Antonije E., Radovanović, Filip, "Novel membrane-supported hydrogel for removal of heavy metals" in Journal of Environmental Chemical Engineering, 3, no. 1 (2015):453-461,
https://doi.org/10.1016/j.jece.2015.01.005 . .

TY  - CONF
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra B.
AU  - Marković, Jelena P.
AU  - Ekmeščić, Bojana
AU  - Vidojković, Sonja
AU  - Onjia, Antonije E.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9243
AB  - Novel polyethersulfone membranes with integrated submicron adsorbent 
particles were prepared by combining photoirradiation with liquid phase 
inversion. These particles consist of cross-linked poly(glycidyl 
methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA AMPS. After membrane preparation, the epoxide groups were reacted with 
diethylene triamine to incorporate amine functionalities. Membranes were 
characterized using FTIR-ATR, SEM and dynamic adsorption of copper 
from a dilute solution. Effects of monomer concentrations on the properties 
and separation performance of membrane adsorbers are presented.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Polyethersulfone membranes with  integrated adsorbent particles for heavy  metals capture
VL  - J-08-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9243
ER  - 

@conference{
author = "Tomković, Tanja and Radovanović, Filip and Nastasović, Aleksandra B. and Marković, Jelena P. and Ekmeščić, Bojana and Vidojković, Sonja and Onjia, Antonije E.",
year = "2014",
abstract = "Novel polyethersulfone membranes with integrated submicron adsorbent 
particles were prepared by combining photoirradiation with liquid phase 
inversion. These particles consist of cross-linked poly(glycidyl 
methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA AMPS. After membrane preparation, the epoxide groups were reacted with 
diethylene triamine to incorporate amine functionalities. Membranes were 
characterized using FTIR-ATR, SEM and dynamic adsorption of copper 
from a dilute solution. Effects of monomer concentrations on the properties 
and separation performance of membrane adsorbers are presented.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Polyethersulfone membranes with  integrated adsorbent particles for heavy  metals capture",
volume = "J-08-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9243"
}

Tomković, T., Radovanović, F., Nastasović, A. B., Marković, J. P., Ekmeščić, B., Vidojković, S.,& Onjia, A. E.. (2014). Polyethersulfone membranes with  integrated adsorbent particles for heavy  metals capture. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., J-08-P.
https://hdl.handle.net/21.15107/rcub_vinar_9243

Tomković T, Radovanović F, Nastasović AB, Marković JP, Ekmeščić B, Vidojković S, Onjia AE. Polyethersulfone membranes with  integrated adsorbent particles for heavy  metals capture. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;J-08-P.
https://hdl.handle.net/21.15107/rcub_vinar_9243 .

Tomković, Tanja, Radovanović, Filip, Nastasović, Aleksandra B., Marković, Jelena P., Ekmeščić, Bojana, Vidojković, Sonja, Onjia, Antonije E., "Polyethersulfone membranes with  integrated adsorbent particles for heavy  metals capture" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, J-08-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9243 .

TY  - CONF
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra B.
AU  - Marković, Jelena P.
AU  - Ekmeščić, Bojana
AU  - Vidojković, Sonja
AU  - Onjia, Antonije E.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/784
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7531
AB  - Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.
PB  - Belgrade, Serbia : Society of Physical Chemists of Serbia
C3  - Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture
SP  - 787
EP  - 790
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7531
ER  - 

@conference{
author = "Tomković, Tanja and Radovanović, Filip and Nastasović, Aleksandra B. and Marković, Jelena P. and Ekmeščić, Bojana and Vidojković, Sonja and Onjia, Antonije E.",
year = "2014",
abstract = "Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.",
publisher = "Belgrade, Serbia : Society of Physical Chemists of Serbia",
journal = "Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture",
pages = "787-790",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7531"
}

Tomković, T., Radovanović, F., Nastasović, A. B., Marković, J. P., Ekmeščić, B., Vidojković, S.,& Onjia, A. E.. (2014). Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture. in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade, Serbia : Society of Physical Chemists of Serbia., 787-790.
https://hdl.handle.net/21.15107/rcub_vinar_7531

Tomković T, Radovanović F, Nastasović AB, Marković JP, Ekmeščić B, Vidojković S, Onjia AE. Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture. in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;:787-790.
https://hdl.handle.net/21.15107/rcub_vinar_7531 .

Tomković, Tanja, Radovanović, Filip, Nastasović, Aleksandra B., Marković, Jelena P., Ekmeščić, Bojana, Vidojković, Sonja, Onjia, Antonije E., "Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture" in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2014):787-790,
https://hdl.handle.net/21.15107/rcub_vinar_7531 .

TY  - JOUR
AU  - Radovanovic, F.
AU  - Nastasović, Aleksandra B.
AU  - Tomkovic, T.
AU  - Vasiljević-Radović, Dana
AU  - Nešić, Aleksandra
AU  - Veličković, Sava J.
AU  - Onjia, Antonije E.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5949
AB  - Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked glycidyl methacrylate copolymer were prepared by a combination of a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. As the concentration of polymerizable monomers increased the original macrovoid structure was replaced by a hybrid morphology with microglobules typical of macroporous methacrylate adsorbers embedded within microporous structure with no significant effects on water permeability. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of Orange G solution at low transmembrane pressures was used to demonstrate suitability of these novel membranes for membrane adsorption. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Reactive and Functional Polymers
T1  - Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate
VL  - 77
SP  - 1
EP  - 10
DO  - 10.1016/j.reactfunctpolym.2014.01.007
ER  - 

@article{
author = "Radovanovic, F. and Nastasović, Aleksandra B. and Tomkovic, T. and Vasiljević-Radović, Dana and Nešić, Aleksandra and Veličković, Sava J. and Onjia, Antonije E.",
year = "2014",
abstract = "Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked glycidyl methacrylate copolymer were prepared by a combination of a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. As the concentration of polymerizable monomers increased the original macrovoid structure was replaced by a hybrid morphology with microglobules typical of macroporous methacrylate adsorbers embedded within microporous structure with no significant effects on water permeability. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of Orange G solution at low transmembrane pressures was used to demonstrate suitability of these novel membranes for membrane adsorption. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Reactive and Functional Polymers",
title = "Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate",
volume = "77",
pages = "1-10",
doi = "10.1016/j.reactfunctpolym.2014.01.007"
}

Radovanovic, F., Nastasović, A. B., Tomkovic, T., Vasiljević-Radović, D., Nešić, A., Veličković, S. J.,& Onjia, A. E.. (2014). Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. in Reactive and Functional Polymers, 77, 1-10.
https://doi.org/10.1016/j.reactfunctpolym.2014.01.007

Radovanovic F, Nastasović AB, Tomkovic T, Vasiljević-Radović D, Nešić A, Veličković SJ, Onjia AE. Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. in Reactive and Functional Polymers. 2014;77:1-10.
doi:10.1016/j.reactfunctpolym.2014.01.007 .

Radovanovic, F., Nastasović, Aleksandra B., Tomkovic, T., Vasiljević-Radović, Dana, Nešić, Aleksandra, Veličković, Sava J., Onjia, Antonije E., "Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate" in Reactive and Functional Polymers, 77 (2014):1-10,
https://doi.org/10.1016/j.reactfunctpolym.2014.01.007 . .

TY  - CONF
AU  - Radovanović, Filip
AU  - Tomković, Tanja
AU  - Nastasović, Aleksandra B.
AU  - Veličković, Sava J.
AU  - Nešić, Aleksandra
AU  - Onjia, Antonije E.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/797
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7535
AB  - Ultrafiltration (UF) membranes are currently used in industry for the concentration of proteins and other macromolecules. Performance of UF membranes is generally limited by a trade-off between permeability and selectivity [1]. However, electrically-charged ultrafiltration membranes can provide a dramatic improvement in ultrafiltration performance [2]. Novel UF membranes were made by combining traditional immersion precipitation process for making membranes with photopolymerization of the casting solution comprising polyethersulfone, glycidyl methacrylate and other reactive monomers. Negative charges were introduced either by initially using 2-acrylamido-2-methylpropane sulfonic acid as a reactive monomer, or were later created by epoxide ring opening of crosslinked glycidyl methacrylate. As shown in Fig. 1, selectivity of these membranes significantly improved as the concentration of negatively-charged groups in the membrane increased. The effects of membrane composition on the properties and separation performance of these novel UF membranes will be presented.
PB  - Belgrade : Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts
T1  - Novel negatively-charged ultrafiltration membranes made by a combination of immersion precipitation and photopolymerization
SP  - 131
EP  - 131
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7535
ER  - 

@conference{
author = "Radovanović, Filip and Tomković, Tanja and Nastasović, Aleksandra B. and Veličković, Sava J. and Nešić, Aleksandra and Onjia, Antonije E.",
year = "2013",
abstract = "Ultrafiltration (UF) membranes are currently used in industry for the concentration of proteins and other macromolecules. Performance of UF membranes is generally limited by a trade-off between permeability and selectivity [1]. However, electrically-charged ultrafiltration membranes can provide a dramatic improvement in ultrafiltration performance [2]. Novel UF membranes were made by combining traditional immersion precipitation process for making membranes with photopolymerization of the casting solution comprising polyethersulfone, glycidyl methacrylate and other reactive monomers. Negative charges were introduced either by initially using 2-acrylamido-2-methylpropane sulfonic acid as a reactive monomer, or were later created by epoxide ring opening of crosslinked glycidyl methacrylate. As shown in Fig. 1, selectivity of these membranes significantly improved as the concentration of negatively-charged groups in the membrane increased. The effects of membrane composition on the properties and separation performance of these novel UF membranes will be presented.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts",
title = "Novel negatively-charged ultrafiltration membranes made by a combination of immersion precipitation and photopolymerization",
pages = "131-131",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7535"
}

Radovanović, F., Tomković, T., Nastasović, A. B., Veličković, S. J., Nešić, A.,& Onjia, A. E.. (2013). Novel negatively-charged ultrafiltration membranes made by a combination of immersion precipitation and photopolymerization. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts
Belgrade : Serbian Chemical Society., 131-131.
https://hdl.handle.net/21.15107/rcub_vinar_7535

Radovanović F, Tomković T, Nastasović AB, Veličković SJ, Nešić A, Onjia AE. Novel negatively-charged ultrafiltration membranes made by a combination of immersion precipitation and photopolymerization. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts. 2013;:131-131.
https://hdl.handle.net/21.15107/rcub_vinar_7535 .

Radovanović, Filip, Tomković, Tanja, Nastasović, Aleksandra B., Veličković, Sava J., Nešić, Aleksandra, Onjia, Antonije E., "Novel negatively-charged ultrafiltration membranes made by a combination of immersion precipitation and photopolymerization" in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts (2013):131-131,
https://hdl.handle.net/21.15107/rcub_vinar_7535 .

TY  - CONF
AU  - Radovanović, Filip
AU  - Tomković, Tanja
AU  - Nastasović, Aleksandra B.
AU  - Veličković, Sava J.
AU  - Nešić, Aleksandra
AU  - Onjia, Antonije E.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/796
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7534
AB  - Polyethersulfone (PES) is frequently used for high-performance ultrafiltration membranes. Functionalization of PES membranes is required to introduce new groups for specific applications, such as affinity membranes for bioseparations [1]. Functionalization methods include bulk modification of PES material, blending of PES with another material, or surface modification of PES membranes [2]. In this work a novel method for introducing functional groups in asymmetric PES membranes is presented [3]. A cast film comprising PES, glycidyl methacrylate (GMA) and a common solvent was exposed to UV irradiation to form a gel of crosslinked polyGMA. The gel was then immersed in a water bath to create an asymmetric membrane with crosslinked polyGMA particles, as shown in Fig. 1. A simple treatment of these membranes with diethylene triamine was used to open the epoxide rings in polyGMA particles and introduce amine functional groups. The effects of monomer concentrations on the properties and separation performance of these novel membrane adsorbers will be presented.
PB  - Belgrade : Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts
T1  - Asymmetric polyethersulfone membranes with crosslinked poly(glycidyl methacrylate) particles
SP  - 128
EP  - 128
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7534
ER  - 

@conference{
author = "Radovanović, Filip and Tomković, Tanja and Nastasović, Aleksandra B. and Veličković, Sava J. and Nešić, Aleksandra and Onjia, Antonije E.",
year = "2013",
abstract = "Polyethersulfone (PES) is frequently used for high-performance ultrafiltration membranes. Functionalization of PES membranes is required to introduce new groups for specific applications, such as affinity membranes for bioseparations [1]. Functionalization methods include bulk modification of PES material, blending of PES with another material, or surface modification of PES membranes [2]. In this work a novel method for introducing functional groups in asymmetric PES membranes is presented [3]. A cast film comprising PES, glycidyl methacrylate (GMA) and a common solvent was exposed to UV irradiation to form a gel of crosslinked polyGMA. The gel was then immersed in a water bath to create an asymmetric membrane with crosslinked polyGMA particles, as shown in Fig. 1. A simple treatment of these membranes with diethylene triamine was used to open the epoxide rings in polyGMA particles and introduce amine functional groups. The effects of monomer concentrations on the properties and separation performance of these novel membrane adsorbers will be presented.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts",
title = "Asymmetric polyethersulfone membranes with crosslinked poly(glycidyl methacrylate) particles",
pages = "128-128",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7534"
}

Radovanović, F., Tomković, T., Nastasović, A. B., Veličković, S. J., Nešić, A.,& Onjia, A. E.. (2013). Asymmetric polyethersulfone membranes with crosslinked poly(glycidyl methacrylate) particles. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts
Belgrade : Serbian Chemical Society., 128-128.
https://hdl.handle.net/21.15107/rcub_vinar_7534

Radovanović F, Tomković T, Nastasović AB, Veličković SJ, Nešić A, Onjia AE. Asymmetric polyethersulfone membranes with crosslinked poly(glycidyl methacrylate) particles. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts. 2013;:128-128.
https://hdl.handle.net/21.15107/rcub_vinar_7534 .

Radovanović, Filip, Tomković, Tanja, Nastasović, Aleksandra B., Veličković, Sava J., Nešić, Aleksandra, Onjia, Antonije E., "Asymmetric polyethersulfone membranes with crosslinked poly(glycidyl methacrylate) particles" in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstracts (2013):128-128,
https://hdl.handle.net/21.15107/rcub_vinar_7534 .

TY  - CONF
AU  - Jakšić, Zoran
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra B.
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/794
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7532
AB  - One of the important applications of subwavelength plasmonic optics is sensing of chemical and biological analytes [1]. Plasmonic sensors are based on tuning of either propagating surface waves (surface plasmon polaritons, SPP) or nonpropagating (localized) ones. The adsorption of analyte modifies the surface refractive index, ensuring ultrahigh sensitivities that may exceed 10–8 refractive index units, i.e. 1 ng/cm2 (0.003 monolayer) [2]. For all plasmonic sensors it is of interest to enhance their selectivity, since their operation is based solely on refractive index sensing, i.e. different materials with similar refractive indexes cause similar outputs. In this work we propose the integration of active plasmonic part with separator (e.g. membrane or nanomembrane with nanopores) and ligand binding the targeted analyte into a single structure. This may be done by membrane nanocompositing [3], e.g. by lamination (Fig. 1a) or volume structuring/pore formation (Fig. 1b). At the same one may use built-in (nano)pores to augment the effective surface for adsorption and thus vastly increase the amount of adsorbate. For our work we chose macroporous crosslinked copolymers (MCP) which are readily formed into membranes and keep a permanent well-developed porous structure. Particularly we used glycidyl methacrylate (GMA)-based MCP. GMA has already been successfully used for heavy and precious metals adsorption and enzyme immobilization [4]. For the formation of membranes comprising GMA we selected a new method combining traditional immersion precipitation with photopolymerization and crosslinking of functional monomers [5]. Our approach may be extended to other types of chemical and bio sensors. Acknowledgment:This work has been funded by Serbian Ministry of Education and Science through the projects TR32008 and III 43009.[1] W. L. Barnes, A. Dereux, T. W. Ebbesen, Nature, 424 (2003) 824-830.[2] L. S. Jung, C. T. Campbell, T. M. Chinowsky, M. N. Mar, S. S. Yee, Langmuir, 14 (1998) 5636-5648.[3] Z. Jakšić, J. Matovic, Materials, 1 (2010) 165-200.[4] N. Miletić, Z. Vuković, A. Nastasović, K. Loos, Macromol. Biosci., 11 (2011) 1537–1543.[5] P. Radovanovic, M. Kellner, J. Matovic, R. Liska, T. Koch, J. Membrane Sci., 401-402 (2012) 254-261.
PB  - Beograd : Agencija Format
C3  - The 3rd International Conference on the Physics of Optical Materilas and Devices - ICOM 2012, Belgrade, Serbia September 3rd - September 6th, 2012: Book of abstracts
T1  - Membrane-based plasmonic nanocomposites for chemical or biological sensing
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7532
ER  - 

@conference{
author = "Jakšić, Zoran and Radovanović, Filip and Nastasović, Aleksandra B.",
year = "2012",
abstract = "One of the important applications of subwavelength plasmonic optics is sensing of chemical and biological analytes [1]. Plasmonic sensors are based on tuning of either propagating surface waves (surface plasmon polaritons, SPP) or nonpropagating (localized) ones. The adsorption of analyte modifies the surface refractive index, ensuring ultrahigh sensitivities that may exceed 10–8 refractive index units, i.e. 1 ng/cm2 (0.003 monolayer) [2]. For all plasmonic sensors it is of interest to enhance their selectivity, since their operation is based solely on refractive index sensing, i.e. different materials with similar refractive indexes cause similar outputs. In this work we propose the integration of active plasmonic part with separator (e.g. membrane or nanomembrane with nanopores) and ligand binding the targeted analyte into a single structure. This may be done by membrane nanocompositing [3], e.g. by lamination (Fig. 1a) or volume structuring/pore formation (Fig. 1b). At the same one may use built-in (nano)pores to augment the effective surface for adsorption and thus vastly increase the amount of adsorbate. For our work we chose macroporous crosslinked copolymers (MCP) which are readily formed into membranes and keep a permanent well-developed porous structure. Particularly we used glycidyl methacrylate (GMA)-based MCP. GMA has already been successfully used for heavy and precious metals adsorption and enzyme immobilization [4]. For the formation of membranes comprising GMA we selected a new method combining traditional immersion precipitation with photopolymerization and crosslinking of functional monomers [5]. Our approach may be extended to other types of chemical and bio sensors. Acknowledgment:This work has been funded by Serbian Ministry of Education and Science through the projects TR32008 and III 43009.[1] W. L. Barnes, A. Dereux, T. W. Ebbesen, Nature, 424 (2003) 824-830.[2] L. S. Jung, C. T. Campbell, T. M. Chinowsky, M. N. Mar, S. S. Yee, Langmuir, 14 (1998) 5636-5648.[3] Z. Jakšić, J. Matovic, Materials, 1 (2010) 165-200.[4] N. Miletić, Z. Vuković, A. Nastasović, K. Loos, Macromol. Biosci., 11 (2011) 1537–1543.[5] P. Radovanovic, M. Kellner, J. Matovic, R. Liska, T. Koch, J. Membrane Sci., 401-402 (2012) 254-261.",
publisher = "Beograd : Agencija Format",
journal = "The 3rd International Conference on the Physics of Optical Materilas and Devices - ICOM 2012, Belgrade, Serbia September 3rd - September 6th, 2012: Book of abstracts",
title = "Membrane-based plasmonic nanocomposites for chemical or biological sensing",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7532"
}

Jakšić, Z., Radovanović, F.,& Nastasović, A. B.. (2012). Membrane-based plasmonic nanocomposites for chemical or biological sensing. in The 3rd International Conference on the Physics of Optical Materilas and Devices - ICOM 2012, Belgrade, Serbia September 3rd - September 6th, 2012: Book of abstracts
Beograd : Agencija Format..
https://hdl.handle.net/21.15107/rcub_vinar_7532

Jakšić Z, Radovanović F, Nastasović AB. Membrane-based plasmonic nanocomposites for chemical or biological sensing. in The 3rd International Conference on the Physics of Optical Materilas and Devices - ICOM 2012, Belgrade, Serbia September 3rd - September 6th, 2012: Book of abstracts. 2012;.
https://hdl.handle.net/21.15107/rcub_vinar_7532 .

Jakšić, Zoran, Radovanović, Filip, Nastasović, Aleksandra B., "Membrane-based plasmonic nanocomposites for chemical or biological sensing" in The 3rd International Conference on the Physics of Optical Materilas and Devices - ICOM 2012, Belgrade, Serbia September 3rd - September 6th, 2012: Book of abstracts (2012),
https://hdl.handle.net/21.15107/rcub_vinar_7532 .