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  - 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 . .