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  - 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  - PAT
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra B.
AU  - Nešić, Aleksandra
AU  - Veličković, Sava J.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/807
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7537
AB  - Pronalazak se odnosi na asimetričnu poroznu membranu sa epoksidnim prstenovima. Ovakva membrana se može dobiti pojednostavljenim postupkom koji izbegava mnoge dodatne operacije u cilju funkcionalizacije postojećih asimetričnih membrana. Po tom postupku homogeni rastvor za polimerizaciju koji obuhvata reaktivnu komponentu sa epoksidnim prstenovima, umreživač, staklasti polimer i rastvarač, oblikuje se u određenu formu, izloži izvoru zračenja u cilju polimerizacije i umrežavanja reaktivnih komponenata i potopi u koagulaciono kupatilo u kome se pomenuta membrana konačno formira. Epoksidni prstenovi se jednostavnim hemijskim reakcijama mogu konvertovati u željene funkcionalne grupe i takve membrane se mogu koristiti za čitav niz separacionih procesa, kao što su ultrafiltracija, membranska adsorpcija za hemijske ili biohemijske primene, ili u sklopu senzora zasnovanih na membranama i tankim filmovima.
AB  - The invention herewith described refers to the asymmetric porous membrane with epoxide rings. Such membrane can be prepared using a simplified method which omits many additional steps carried out in order to functionalize existing asymmetric membranes. According to this method a homogeneous polymerizable solution comprising a reactive component with epoxide rings, a crosslinker, a glassy polymer, and a solvent, is formed into a shaped article, exposed to a source of irradiation to polymerize and crosslink the reactive components, and immersed into a coagulation bath to form said membrane.; Epoxide rings can be converted into desired functional groups using simple chemical reactions and such membranes can be utilized for a broad range of separation processes including ultrafiltration, membrane adsorption for chemical or biochemical applications, or in sensing devices based on membranes and thin films.
T1  - Asimetrična porozna membrana sa epoksidnim prstenovima
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7537
ER  - 

@misc{
author = "Radovanović, Filip and Nastasović, Aleksandra B. and Nešić, Aleksandra and Veličković, Sava J.",
year = "2015",
abstract = "Pronalazak se odnosi na asimetričnu poroznu membranu sa epoksidnim prstenovima. Ovakva membrana se može dobiti pojednostavljenim postupkom koji izbegava mnoge dodatne operacije u cilju funkcionalizacije postojećih asimetričnih membrana. Po tom postupku homogeni rastvor za polimerizaciju koji obuhvata reaktivnu komponentu sa epoksidnim prstenovima, umreživač, staklasti polimer i rastvarač, oblikuje se u određenu formu, izloži izvoru zračenja u cilju polimerizacije i umrežavanja reaktivnih komponenata i potopi u koagulaciono kupatilo u kome se pomenuta membrana konačno formira. Epoksidni prstenovi se jednostavnim hemijskim reakcijama mogu konvertovati u željene funkcionalne grupe i takve membrane se mogu koristiti za čitav niz separacionih procesa, kao što su ultrafiltracija, membranska adsorpcija za hemijske ili biohemijske primene, ili u sklopu senzora zasnovanih na membranama i tankim filmovima., The invention herewith described refers to the asymmetric porous membrane with epoxide rings. Such membrane can be prepared using a simplified method which omits many additional steps carried out in order to functionalize existing asymmetric membranes. According to this method a homogeneous polymerizable solution comprising a reactive component with epoxide rings, a crosslinker, a glassy polymer, and a solvent, is formed into a shaped article, exposed to a source of irradiation to polymerize and crosslink the reactive components, and immersed into a coagulation bath to form said membrane.; Epoxide rings can be converted into desired functional groups using simple chemical reactions and such membranes can be utilized for a broad range of separation processes including ultrafiltration, membrane adsorption for chemical or biochemical applications, or in sensing devices based on membranes and thin films.",
title = "Asimetrična porozna membrana sa epoksidnim prstenovima",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7537"
}

Radovanović, F., Nastasović, A. B., Nešić, A.,& Veličković, S. J.. (2015). Asimetrična porozna membrana sa epoksidnim prstenovima. .
https://hdl.handle.net/21.15107/rcub_vinar_7537

Radovanović F, Nastasović AB, Nešić A, Veličković SJ. Asimetrična porozna membrana sa epoksidnim prstenovima. 2015;.
https://hdl.handle.net/21.15107/rcub_vinar_7537 .

Radovanović, Filip, Nastasović, Aleksandra B., Nešić, Aleksandra, Veličković, Sava J., "Asimetrična porozna membrana sa epoksidnim prstenovima" (2015),
https://hdl.handle.net/21.15107/rcub_vinar_7537 .

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  - Stajčić, Aleksandar
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra B.
AU  - Stajić-Trošić, Jasna T.
AU  - Marković, Jelena P.
AU  - Onjia, Antonije E.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/800
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7536
AB  - Hydrogels containing strong acid groups have been used in the past for the removal of heavy metals. Unfortunately such hydrogels exhibit poor mechanical properties and are generally difficult to handle. In this work we prepared asymmetric membranes incorporatingcross-linked 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) hydrogel by combining photopolymerization and liquid phase inversion. An experimental design measuring water content and ion-exchange capacity of these membranes was used to select the optimal membrane composition for the removal of Pb2+, Ni2+, and Cd2+ ions from aqueous solutions. The results demonstrated fast sorption kinetics and high capacity for the investigated metals.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia
T1  - Asymmetric hydrogel membranes for heavy metal adsorption
SP  - 40
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7536
ER  - 

@conference{
author = "Stajčić, Aleksandar and Radovanović, Filip and Nastasović, Aleksandra B. and Stajić-Trošić, Jasna T. and Marković, Jelena P. and Onjia, Antonije E.",
year = "2013",
abstract = "Hydrogels containing strong acid groups have been used in the past for the removal of heavy metals. Unfortunately such hydrogels exhibit poor mechanical properties and are generally difficult to handle. In this work we prepared asymmetric membranes incorporatingcross-linked 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) hydrogel by combining photopolymerization and liquid phase inversion. An experimental design measuring water content and ion-exchange capacity of these membranes was used to select the optimal membrane composition for the removal of Pb2+, Ni2+, and Cd2+ ions from aqueous solutions. The results demonstrated fast sorption kinetics and high capacity for the investigated metals.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia",
title = "Asymmetric hydrogel membranes for heavy metal adsorption",
pages = "40-40",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7536"
}

Stajčić, A., Radovanović, F., Nastasović, A. B., Stajić-Trošić, J. T., Marković, J. P.,& Onjia, A. E.. (2013). Asymmetric hydrogel membranes for heavy metal adsorption. in Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 40-40.
https://hdl.handle.net/21.15107/rcub_vinar_7536

Stajčić A, Radovanović F, Nastasović AB, Stajić-Trošić JT, Marković JP, Onjia AE. Asymmetric hydrogel membranes for heavy metal adsorption. in Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia. 2013;:40-40.
https://hdl.handle.net/21.15107/rcub_vinar_7536 .

Stajčić, Aleksandar, Radovanović, Filip, Nastasović, Aleksandra B., Stajić-Trošić, Jasna T., Marković, Jelena P., Onjia, Antonije E., "Asymmetric hydrogel membranes for heavy metal adsorption" in Program and the Book of Abstracts / Twelfth Young Researchers' Conference Materials Sciences and Engineering December 11-13, 2013, Belgrade, Serbia (2013):40-40,
https://hdl.handle.net/21.15107/rcub_vinar_7536 .

TY  - CONF
AU  - Nešić, Aleksandra
AU  - Veličković, Sava J.
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra B.
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/795
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7533
AB  - Ultrafiltration has recently become popular as a promising separation method in many industrial processes covering fractionation and concentration steps in the food, pharmaceutical and biotechnology industries as much as in water and wastewater treatments. This paper presents the synthesis of novel asymmetric polyethersulfone membranes containing an interpenetrating network of poly(glycidyl methacrylate) (PGMA). In order to improve the properties and application range of membranes, the epoxy groups from PGMA are converted to amine groups by ring opening under alkaline conditions. Membranes before and after functionalization are characterized by FTIR-ATR, elememtal analysis and water permeability.
PB  - Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
T1  - Novel asymmetric polyethersulfone membranes for ultrafiltration application
SP  - 82
EP  - 82
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7533
ER  - 

@conference{
author = "Nešić, Aleksandra and Veličković, Sava J. and Radovanović, Filip and Nastasović, Aleksandra B.",
year = "2012",
abstract = "Ultrafiltration has recently become popular as a promising separation method in many industrial processes covering fractionation and concentration steps in the food, pharmaceutical and biotechnology industries as much as in water and wastewater treatments. This paper presents the synthesis of novel asymmetric polyethersulfone membranes containing an interpenetrating network of poly(glycidyl methacrylate) (PGMA). In order to improve the properties and application range of membranes, the epoxy groups from PGMA are converted to amine groups by ring opening under alkaline conditions. Membranes before and after functionalization are characterized by FTIR-ATR, elememtal analysis and water permeability.",
publisher = "Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts",
title = "Novel asymmetric polyethersulfone membranes for ultrafiltration application",
pages = "82-82",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7533"
}

Nešić, A., Veličković, S. J., Radovanović, F.,& Nastasović, A. B.. (2012). Novel asymmetric polyethersulfone membranes for ultrafiltration application. in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade., 82-82.
https://hdl.handle.net/21.15107/rcub_vinar_7533

Nešić A, Veličković SJ, Radovanović F, Nastasović AB. Novel asymmetric polyethersulfone membranes for ultrafiltration application. in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts. 2012;:82-82.
https://hdl.handle.net/21.15107/rcub_vinar_7533 .

Nešić, Aleksandra, Veličković, Sava J., Radovanović, Filip, Nastasović, Aleksandra B., "Novel asymmetric polyethersulfone membranes for ultrafiltration application" in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts (2012):82-82,
https://hdl.handle.net/21.15107/rcub_vinar_7533 .

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 .