TY  - JOUR
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7578
AB  - The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials. (C) 2017 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Food Hydrocolloids
T1  - Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation
VL  - 77
SP  - 494
EP  - 501
DO  - 10.1016/j.foodhyd.2017.10.027
ER  - 

@article{
year = "2018",
abstract = "The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials. (C) 2017 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Food Hydrocolloids",
title = "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation",
volume = "77",
pages = "494-501",
doi = "10.1016/j.foodhyd.2017.10.027"
}

(2018). Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids
Elsevier., 77, 494-501.
https://doi.org/10.1016/j.foodhyd.2017.10.027

Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids. 2018;77:494-501.
doi:10.1016/j.foodhyd.2017.10.027 .

"Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation" in Food Hydrocolloids, 77 (2018):494-501,
https://doi.org/10.1016/j.foodhyd.2017.10.027 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Meseldžija, Slađana
AU  - Volkov-Husović, Tatjana
AU  - Veličković, Sava J.
AU  - Onjia, Antonije E.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1302
AB  - In this work, the reliability of image analysis for the numerical evaluation of Basic Red 46 (BR 46) dye adsorption process was studied. The image analysis was carried out on dye adsorbed onto SBA-15 mesoporous silica, by use of Image-Pro Plus software. Pixel-specific calibration curves were derived and used to obtain dye concentration from the three different primary color channels (red, green, and blue) recorded at each pixel. In order to establish credibility of this method for quantification of adsorption processes, these data were compared with dye adsorption parameters obtained by UV-vis analysis. Among the three different primary color channels, the best results were obtained when the blue color channel was applied. In this case, the average relative error was 0.86%. The obtained results showed that a dye adsorbed on SBA-15 can be determined with the use of Image-Pro Plus with the same sensitivity as with the use of spectrophotometric analysis for the determination of changes in dye concentration during the adsorption process.
T2  - CLEAN - Soil Air Water
T1  - Evaluation of Dye Adsorption Onto SBA-15 Using Image Analysis
VL  - 44
IS  - 10
SP  - 1323
EP  - 1328
DO  - 10.1002/clen.201500565
ER  - 

@article{
author = "Nešić, Aleksandra and Kokunešoski, Maja and Meseldžija, Slađana and Volkov-Husović, Tatjana and Veličković, Sava J. and Onjia, Antonije E.",
year = "2016",
abstract = "In this work, the reliability of image analysis for the numerical evaluation of Basic Red 46 (BR 46) dye adsorption process was studied. The image analysis was carried out on dye adsorbed onto SBA-15 mesoporous silica, by use of Image-Pro Plus software. Pixel-specific calibration curves were derived and used to obtain dye concentration from the three different primary color channels (red, green, and blue) recorded at each pixel. In order to establish credibility of this method for quantification of adsorption processes, these data were compared with dye adsorption parameters obtained by UV-vis analysis. Among the three different primary color channels, the best results were obtained when the blue color channel was applied. In this case, the average relative error was 0.86%. The obtained results showed that a dye adsorbed on SBA-15 can be determined with the use of Image-Pro Plus with the same sensitivity as with the use of spectrophotometric analysis for the determination of changes in dye concentration during the adsorption process.",
journal = "CLEAN - Soil Air Water",
title = "Evaluation of Dye Adsorption Onto SBA-15 Using Image Analysis",
volume = "44",
number = "10",
pages = "1323-1328",
doi = "10.1002/clen.201500565"
}

Nešić, A., Kokunešoski, M., Meseldžija, S., Volkov-Husović, T., Veličković, S. J.,& Onjia, A. E.. (2016). Evaluation of Dye Adsorption Onto SBA-15 Using Image Analysis. in CLEAN - Soil Air Water, 44(10), 1323-1328.
https://doi.org/10.1002/clen.201500565

Nešić A, Kokunešoski M, Meseldžija S, Volkov-Husović T, Veličković SJ, Onjia AE. Evaluation of Dye Adsorption Onto SBA-15 Using Image Analysis. in CLEAN - Soil Air Water. 2016;44(10):1323-1328.
doi:10.1002/clen.201500565 .

Nešić, Aleksandra, Kokunešoski, Maja, Meseldžija, Slađana, Volkov-Husović, Tatjana, Veličković, Sava J., Onjia, Antonije E., "Evaluation of Dye Adsorption Onto SBA-15 Using Image Analysis" in CLEAN - Soil Air Water, 44, no. 10 (2016):1323-1328,
https://doi.org/10.1002/clen.201500565 . .

TY  - JOUR
AU  - Spasojević, Pavle M.
AU  - Panić, Vesna V.
AU  - Jović, Mihajlo D.
AU  - Marković, Jelena P.
AU  - van Roost, C.
AU  - Popović, Ivanka G.
AU  - Veličković, Sava J.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/910
AB  - Mimicking the extraordinary performances of natural materials presents an attractive, but challenging approach in the synthesis of advanced functional materials. In the field of separation techniques, the design of a low-cost, regenerative, environmentally friendly sorbent and the utilization of most of its active centers to remove the targeted pollutant are everyday challenges. The combination of casein and poly(sodium methacrylate) (PMANa) in the form of a soft polymer network is proposed as a promising sorbent for the removal of Ni2+ from wastewater. Such a combination and an applied synthetic route form hybrid materials with better sorption properties than both their components alone. SEM and TEM show that caseinate micelles are dissociated and the more exposed protein structure is stabilized by the PMANa network and able to form various stable complexes. The achieved sorption capacity (224 mg g(-1)) is among the highest reported in the literature. The very high removal efficiency in the wide range of the initial Ni2+ concentrations (0.05-200 ppm) and easy and complete regeneration without decrease in sorption capacities make these low-cost materials highly sensitive sorbents attractive for use under real conditions where it is necessary to avoid environmental risks and provide the recovery and reuse of the metal.
T2  - Journal of Materials Chemistry. A
T1  - Biomimic hybrid polymer networks based on casein and poly(methacrylic acid). Case study: Ni2+ removal
VL  - 4
IS  - 5
SP  - 1680
EP  - 1693
DO  - 10.1039/c5ta08424e
ER  - 

@article{
author = "Spasojević, Pavle M. and Panić, Vesna V. and Jović, Mihajlo D. and Marković, Jelena P. and van Roost, C. and Popović, Ivanka G. and Veličković, Sava J.",
year = "2016",
abstract = "Mimicking the extraordinary performances of natural materials presents an attractive, but challenging approach in the synthesis of advanced functional materials. In the field of separation techniques, the design of a low-cost, regenerative, environmentally friendly sorbent and the utilization of most of its active centers to remove the targeted pollutant are everyday challenges. The combination of casein and poly(sodium methacrylate) (PMANa) in the form of a soft polymer network is proposed as a promising sorbent for the removal of Ni2+ from wastewater. Such a combination and an applied synthetic route form hybrid materials with better sorption properties than both their components alone. SEM and TEM show that caseinate micelles are dissociated and the more exposed protein structure is stabilized by the PMANa network and able to form various stable complexes. The achieved sorption capacity (224 mg g(-1)) is among the highest reported in the literature. The very high removal efficiency in the wide range of the initial Ni2+ concentrations (0.05-200 ppm) and easy and complete regeneration without decrease in sorption capacities make these low-cost materials highly sensitive sorbents attractive for use under real conditions where it is necessary to avoid environmental risks and provide the recovery and reuse of the metal.",
journal = "Journal of Materials Chemistry. A",
title = "Biomimic hybrid polymer networks based on casein and poly(methacrylic acid). Case study: Ni2+ removal",
volume = "4",
number = "5",
pages = "1680-1693",
doi = "10.1039/c5ta08424e"
}

Spasojević, P. M., Panić, V. V., Jović, M. D., Marković, J. P., van Roost, C., Popović, I. G.,& Veličković, S. J.. (2016). Biomimic hybrid polymer networks based on casein and poly(methacrylic acid). Case study: Ni2+ removal. in Journal of Materials Chemistry. A, 4(5), 1680-1693.
https://doi.org/10.1039/c5ta08424e

Spasojević PM, Panić VV, Jović MD, Marković JP, van Roost C, Popović IG, Veličković SJ. Biomimic hybrid polymer networks based on casein and poly(methacrylic acid). Case study: Ni2+ removal. in Journal of Materials Chemistry. A. 2016;4(5):1680-1693.
doi:10.1039/c5ta08424e .

Spasojević, Pavle M., Panić, Vesna V., Jović, Mihajlo D., Marković, Jelena P., van Roost, C., Popović, Ivanka G., Veličković, Sava J., "Biomimic hybrid polymer networks based on casein and poly(methacrylic acid). Case study: Ni2+ removal" in Journal of Materials Chemistry. A, 4, no. 5 (2016):1680-1693,
https://doi.org/10.1039/c5ta08424e . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Panić, Vesna
AU  - Ostojić, Sanja 
AU  - Micić, Darko M.
AU  - Pajić-Lijaković, Ivana
AU  - Onjia, Antonije E.
AU  - Veličković, Sava J.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1009
AB  - This article described the synthesis and characterization of new copolymer hydrogels containing two hydrophilic units-methacrylic acid (MAA) and 2-Acrylamido-2-methylpropane sulfonic acid (AMPS). The resulting hydrogels were characterized by various techniques: FTIR, Elemental analysis, SEM, Dynamic Molecular simulation, Dynamic-Mechanical analysis and DSC in order to confirm the structure of hydrogels and to predict the best ratio composition with enhanced physical chemical properties. The swelling behavior in water was studied as a function of ratio of monomers and their concentration in medium. An increase in AMPS content led to expansion of network and increase in swelling degree capacity in water. An increase in AMPS content did not significantly influence the glass transition temperature of copolymers, indicated that the physical properties of initial components were preserved. The equal amount of monomers contributed to the highest strength of hydrogels. Meanwhile, the introduction of AMPS to the system was an effective method for improving the performances of the poly(methacrylic acid)- based hydrogels. (C) 2016 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Materials Chemistry and Physics
T1  - Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid
VL  - 174
SP  - 156
EP  - 163
DO  - 10.1016/j.matchemphys.2016.02.063
ER  - 

@article{
author = "Nešić, Aleksandra and Panić, Vesna and Ostojić, Sanja  and Micić, Darko M. and Pajić-Lijaković, Ivana and Onjia, Antonije E. and Veličković, Sava J.",
year = "2016",
abstract = "This article described the synthesis and characterization of new copolymer hydrogels containing two hydrophilic units-methacrylic acid (MAA) and 2-Acrylamido-2-methylpropane sulfonic acid (AMPS). The resulting hydrogels were characterized by various techniques: FTIR, Elemental analysis, SEM, Dynamic Molecular simulation, Dynamic-Mechanical analysis and DSC in order to confirm the structure of hydrogels and to predict the best ratio composition with enhanced physical chemical properties. The swelling behavior in water was studied as a function of ratio of monomers and their concentration in medium. An increase in AMPS content led to expansion of network and increase in swelling degree capacity in water. An increase in AMPS content did not significantly influence the glass transition temperature of copolymers, indicated that the physical properties of initial components were preserved. The equal amount of monomers contributed to the highest strength of hydrogels. Meanwhile, the introduction of AMPS to the system was an effective method for improving the performances of the poly(methacrylic acid)- based hydrogels. (C) 2016 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Chemistry and Physics",
title = "Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid",
volume = "174",
pages = "156-163",
doi = "10.1016/j.matchemphys.2016.02.063"
}

Nešić, A., Panić, V., Ostojić, S., Micić, D. M., Pajić-Lijaković, I., Onjia, A. E.,& Veličković, S. J.. (2016). Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid. in Materials Chemistry and Physics
Elsevier., 174, 156-163.
https://doi.org/10.1016/j.matchemphys.2016.02.063

Nešić A, Panić V, Ostojić S, Micić DM, Pajić-Lijaković I, Onjia AE, Veličković SJ. Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid. in Materials Chemistry and Physics. 2016;174:156-163.
doi:10.1016/j.matchemphys.2016.02.063 .

Nešić, Aleksandra, Panić, Vesna, Ostojić, Sanja , Micić, Darko M., Pajić-Lijaković, Ivana, Onjia, Antonije E., Veličković, Sava J., "Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid" in Materials Chemistry and Physics, 174 (2016):156-163,
https://doi.org/10.1016/j.matchemphys.2016.02.063 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Volkov-Husović, Tatjana
AU  - Veličković, Sava J.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/954
AB  - In this work, a new method for the quantification of methyl violet cationic dye sorption onto SBA-15 mesoporous silica was developed. This method related the intensity of coloration of SBA-15 samples (after reached equilibrium sorption) within dye concentration in aqueous solution using Image-Pro Plus software. The sorption process of methyl violet dye onto SBA-15 was analyzed varying different initial parameters (dye concentration, mass of sorbent, pH of dye solution, and contact sorption time). SBA-15 proved as efficient sorbent for removal of methyl violet dye in contact time of 5 min, with maximum percentage of dye removal 99% at pH 8. The results obtained from Image-Pro Plus showed to be in good agreement with the sorption parameters obtained by UV/Vis spectroscopy, which has been the most commonly used instrument for quantification of dye sorption. The image analysis method proved well prediction of dye concentrations with maximum relative error of 1.83 %. The advantages of this method are low cost and reliable quantitative evaluation with minimum of time.
PB  - Springer
T2  - Environmental Monitoring and Assessment
T1  - New method for quantification of dye sorption using SBA mesoporous silica as a target sorbent
VL  - 188
IS  - 3
DO  - 10.1007/s10661-016-5155-0
ER  - 

@article{
author = "Nešić, Aleksandra and Kokunešoski, Maja and Volkov-Husović, Tatjana and Veličković, Sava J.",
year = "2016",
abstract = "In this work, a new method for the quantification of methyl violet cationic dye sorption onto SBA-15 mesoporous silica was developed. This method related the intensity of coloration of SBA-15 samples (after reached equilibrium sorption) within dye concentration in aqueous solution using Image-Pro Plus software. The sorption process of methyl violet dye onto SBA-15 was analyzed varying different initial parameters (dye concentration, mass of sorbent, pH of dye solution, and contact sorption time). SBA-15 proved as efficient sorbent for removal of methyl violet dye in contact time of 5 min, with maximum percentage of dye removal 99% at pH 8. The results obtained from Image-Pro Plus showed to be in good agreement with the sorption parameters obtained by UV/Vis spectroscopy, which has been the most commonly used instrument for quantification of dye sorption. The image analysis method proved well prediction of dye concentrations with maximum relative error of 1.83 %. The advantages of this method are low cost and reliable quantitative evaluation with minimum of time.",
publisher = "Springer",
journal = "Environmental Monitoring and Assessment",
title = "New method for quantification of dye sorption using SBA mesoporous silica as a target sorbent",
volume = "188",
number = "3",
doi = "10.1007/s10661-016-5155-0"
}

Nešić, A., Kokunešoski, M., Volkov-Husović, T.,& Veličković, S. J.. (2016). New method for quantification of dye sorption using SBA mesoporous silica as a target sorbent. in Environmental Monitoring and Assessment
Springer., 188(3).
https://doi.org/10.1007/s10661-016-5155-0

Nešić A, Kokunešoski M, Volkov-Husović T, Veličković SJ. New method for quantification of dye sorption using SBA mesoporous silica as a target sorbent. in Environmental Monitoring and Assessment. 2016;188(3).
doi:10.1007/s10661-016-5155-0 .

Nešić, Aleksandra, Kokunešoski, Maja, Volkov-Husović, Tatjana, Veličković, Sava J., "New method for quantification of dye sorption using SBA mesoporous silica as a target sorbent" in Environmental Monitoring and Assessment, 188, no. 3 (2016),
https://doi.org/10.1007/s10661-016-5155-0 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Onjia, Antonije E.
AU  - Ostojić, Sanja 
AU  - Micić, Darko M.
AU  - Veličković, Sava J.
AU  - Antonović, Dušan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/928
AB  - Films of chitosan and poly(itaconic acid) in various different ratios have been prepared by membrane casting. The enhancement in the proton conductivity and uptake of water was observed as the content of poly(itaconic acid) in film increased. The proton conductivity of chitosan/poly(itaconic) films was comparative with commercially used synthetic sensor Nafion 117. Films showed thermal stability up to 185 degrees C. The proposed experiment might open up a new possibility for use of chitosan/poly(itaconic acid) films as a biosensors due to their advantages: low cost, simple preparation and good conductive sensitivity. (C) 2015 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Materials Letters
T1  - Novel biosensor films based on chitosan
VL  - 167
SP  - 47
EP  - 49
DO  - 10.1016/j.matlet.2015.12.124
ER  - 

@article{
author = "Nešić, Aleksandra and Onjia, Antonije E. and Ostojić, Sanja  and Micić, Darko M. and Veličković, Sava J. and Antonović, Dušan",
year = "2016",
abstract = "Films of chitosan and poly(itaconic acid) in various different ratios have been prepared by membrane casting. The enhancement in the proton conductivity and uptake of water was observed as the content of poly(itaconic acid) in film increased. The proton conductivity of chitosan/poly(itaconic) films was comparative with commercially used synthetic sensor Nafion 117. Films showed thermal stability up to 185 degrees C. The proposed experiment might open up a new possibility for use of chitosan/poly(itaconic acid) films as a biosensors due to their advantages: low cost, simple preparation and good conductive sensitivity. (C) 2015 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Novel biosensor films based on chitosan",
volume = "167",
pages = "47-49",
doi = "10.1016/j.matlet.2015.12.124"
}

Nešić, A., Onjia, A. E., Ostojić, S., Micić, D. M., Veličković, S. J.,& Antonović, D.. (2016). Novel biosensor films based on chitosan. in Materials Letters
Elsevier., 167, 47-49.
https://doi.org/10.1016/j.matlet.2015.12.124

Nešić A, Onjia AE, Ostojić S, Micić DM, Veličković SJ, Antonović D. Novel biosensor films based on chitosan. in Materials Letters. 2016;167:47-49.
doi:10.1016/j.matlet.2015.12.124 .

Nešić, Aleksandra, Onjia, Antonije E., Ostojić, Sanja , Micić, Darko M., Veličković, Sava J., Antonović, Dušan, "Novel biosensor films based on chitosan" in Materials Letters, 167 (2016):47-49,
https://doi.org/10.1016/j.matlet.2015.12.124 . .

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  - CONF
AU  - Nešić, Aleksandra
AU  - Onjia, Antonije E.
AU  - Veličković, Sava J.
AU  - Antonović, Dušan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7107
AB  - Environmental protection has been a topic of great interest in recent years. Discharging azo dyes in aquatic systems contaminates water and causes serious ecological problems. Azo dyes are bio-accumulative, and, due to allergenic, carcinogenic and mutagenic properties, are a grave threat to people and the environment. Because of economic feasibility, simplicity and a high efficiency, adsorption is the most suitable process for treatment of wastewater. The increasingly interesting bio-degradable adsorbents are those that stem from ecologically and economically sustainable sources. The aim of the study is preparation and characterisation of polymer complexes based on naturally occurring polysaccharide-chitosan and poly( itaconic acid), as an adsorbent for removal of Reactive Orange 16 dye from wastewater. The complexes are characterised by Fourier-Transform Infrared Spectroscopy and Scanning electron microscopy. The effect of initial dye concentration, temperature and pH value of the solution on the adsorption capacities is investigated. Comparison of the obtained results with reported data shows the studied complex being an efficiently replacement for conventional adsorbents removing Reactive Orange 16 from wastewater.
T1  - Preparation and Characterisation of Novel Biodegradable Material Based on Chitosan and Poly(Itaconic Acid) as Adsorbent for Removal of Reactive Orange 16 Dye from Wastewater
SP  - 243
EP  - 251
DO  - 10.1007/978-3-319-14883-0_18
ER  - 

@conference{
author = "Nešić, Aleksandra and Onjia, Antonije E. and Veličković, Sava J. and Antonović, Dušan",
year = "2015",
abstract = "Environmental protection has been a topic of great interest in recent years. Discharging azo dyes in aquatic systems contaminates water and causes serious ecological problems. Azo dyes are bio-accumulative, and, due to allergenic, carcinogenic and mutagenic properties, are a grave threat to people and the environment. Because of economic feasibility, simplicity and a high efficiency, adsorption is the most suitable process for treatment of wastewater. The increasingly interesting bio-degradable adsorbents are those that stem from ecologically and economically sustainable sources. The aim of the study is preparation and characterisation of polymer complexes based on naturally occurring polysaccharide-chitosan and poly( itaconic acid), as an adsorbent for removal of Reactive Orange 16 dye from wastewater. The complexes are characterised by Fourier-Transform Infrared Spectroscopy and Scanning electron microscopy. The effect of initial dye concentration, temperature and pH value of the solution on the adsorption capacities is investigated. Comparison of the obtained results with reported data shows the studied complex being an efficiently replacement for conventional adsorbents removing Reactive Orange 16 from wastewater.",
title = "Preparation and Characterisation of Novel Biodegradable Material Based on Chitosan and Poly(Itaconic Acid) as Adsorbent for Removal of Reactive Orange 16 Dye from Wastewater",
pages = "243-251",
doi = "10.1007/978-3-319-14883-0_18"
}

Nešić, A., Onjia, A. E., Veličković, S. J.,& Antonović, D.. (2015). Preparation and Characterisation of Novel Biodegradable Material Based on Chitosan and Poly(Itaconic Acid) as Adsorbent for Removal of Reactive Orange 16 Dye from Wastewater. , 243-251.
https://doi.org/10.1007/978-3-319-14883-0_18

Nešić A, Onjia AE, Veličković SJ, Antonović D. Preparation and Characterisation of Novel Biodegradable Material Based on Chitosan and Poly(Itaconic Acid) as Adsorbent for Removal of Reactive Orange 16 Dye from Wastewater. 2015;:243-251.
doi:10.1007/978-3-319-14883-0_18 .

Nešić, Aleksandra, Onjia, Antonije E., Veličković, Sava J., Antonović, Dušan, "Preparation and Characterisation of Novel Biodegradable Material Based on Chitosan and Poly(Itaconic Acid) as Adsorbent for Removal of Reactive Orange 16 Dye from Wastewater" (2015):243-251,
https://doi.org/10.1007/978-3-319-14883-0_18 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Panić, Vesna V.
AU  - Onjia, Antonije E.
AU  - Veličković, Sava J.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/502
AB  - In this study novel copolymer hydrogels based on methacrylic acid (MAA) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) were synthesized by free-radical aqueous copolymerization and characterized. Derived P(MAA-co-AMPS) hydrogels, joining well the affection of numerous anionic groups toward cations and the accessibility of active sites in the swollen network were recognized as potential sorbents for removal of cationic species. The effect of various initial parameters on sorption of two cationic dyes onto P(MAA-co-AMPS) hydrogels was investigated in both, single and binary, systems. Results showed that the copolymerization of MAA and AMPS significantly increased sorption capability of copolymers compared to both pure-component hydrogels-PMAA and PAMPS hydrogels. The main advantage of novel copolymer hydrogels is enhanced sorption of dyes in binary systems, reaching maximal values of 98.8% (Basic Yellow 28) and 96.4 (Basic Red 46), onto hydrogel P (MAA-co-AMPS) 50/50. The desorption rate of BY28 and BR46 in both, single and in binary, systems increased with the increase in AMPS content in hydrogels. This investigation showed that copolymerization of two acidic monomers, bearing different types of acid groups, could significantly improve the sorption thus decreasing the price and the amount of material needed for successful removal of pollutants. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. A: Physicochemical and Engineering Aspects
T1  - The enhanced removal of cationic dyes in binary system using novel copolymers with two kinds of acidic groups
VL  - 476
SP  - 24
EP  - 34
DO  - 10.1016/j.colsurfa.2015.03.013
ER  - 

@article{
author = "Nešić, Aleksandra and Panić, Vesna V. and Onjia, Antonije E. and Veličković, Sava J.",
year = "2015",
abstract = "In this study novel copolymer hydrogels based on methacrylic acid (MAA) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) were synthesized by free-radical aqueous copolymerization and characterized. Derived P(MAA-co-AMPS) hydrogels, joining well the affection of numerous anionic groups toward cations and the accessibility of active sites in the swollen network were recognized as potential sorbents for removal of cationic species. The effect of various initial parameters on sorption of two cationic dyes onto P(MAA-co-AMPS) hydrogels was investigated in both, single and binary, systems. Results showed that the copolymerization of MAA and AMPS significantly increased sorption capability of copolymers compared to both pure-component hydrogels-PMAA and PAMPS hydrogels. The main advantage of novel copolymer hydrogels is enhanced sorption of dyes in binary systems, reaching maximal values of 98.8% (Basic Yellow 28) and 96.4 (Basic Red 46), onto hydrogel P (MAA-co-AMPS) 50/50. The desorption rate of BY28 and BR46 in both, single and in binary, systems increased with the increase in AMPS content in hydrogels. This investigation showed that copolymerization of two acidic monomers, bearing different types of acid groups, could significantly improve the sorption thus decreasing the price and the amount of material needed for successful removal of pollutants. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. A: Physicochemical and Engineering Aspects",
title = "The enhanced removal of cationic dyes in binary system using novel copolymers with two kinds of acidic groups",
volume = "476",
pages = "24-34",
doi = "10.1016/j.colsurfa.2015.03.013"
}

Nešić, A., Panić, V. V., Onjia, A. E.,& Veličković, S. J.. (2015). The enhanced removal of cationic dyes in binary system using novel copolymers with two kinds of acidic groups. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 476, 24-34.
https://doi.org/10.1016/j.colsurfa.2015.03.013

Nešić A, Panić VV, Onjia AE, Veličković SJ. The enhanced removal of cationic dyes in binary system using novel copolymers with two kinds of acidic groups. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects. 2015;476:24-34.
doi:10.1016/j.colsurfa.2015.03.013 .

Nešić, Aleksandra, Panić, Vesna V., Onjia, Antonije E., Veličković, Sava J., "The enhanced removal of cationic dyes in binary system using novel copolymers with two kinds of acidic groups" in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 476 (2015):24-34,
https://doi.org/10.1016/j.colsurfa.2015.03.013 . .

TY  - CONF
AU  - Nešić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Volkov-Husović, Tatjana
AU  - Veličković, Sava
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11258
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 13th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 10-12, Belgrade
T1  - Quantification of basic dyes adsorption onto mesoporous silica SBA-15 using image analysis software
SP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11258
ER  - 

@conference{
author = "Nešić, Aleksandra and Kokunešoski, Maja and Volkov-Husović, Tatjana and Veličković, Sava",
year = "2014",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "13th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 10-12, Belgrade",
title = "Quantification of basic dyes adsorption onto mesoporous silica SBA-15 using image analysis software",
pages = "41",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11258"
}

Nešić, A., Kokunešoski, M., Volkov-Husović, T.,& Veličković, S.. (2014). Quantification of basic dyes adsorption onto mesoporous silica SBA-15 using image analysis software. in 13th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 10-12, Belgrade
Belgrade : Institute of Technical Sciences of SASA., 41.
https://hdl.handle.net/21.15107/rcub_vinar_11258

Nešić A, Kokunešoski M, Volkov-Husović T, Veličković S. Quantification of basic dyes adsorption onto mesoporous silica SBA-15 using image analysis software. in 13th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 10-12, Belgrade. 2014;:41.
https://hdl.handle.net/21.15107/rcub_vinar_11258 .

Nešić, Aleksandra, Kokunešoski, Maja, Volkov-Husović, Tatjana, Veličković, Sava, "Quantification of basic dyes adsorption onto mesoporous silica SBA-15 using image analysis software" in 13th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 10-12, Belgrade (2014):41,
https://hdl.handle.net/21.15107/rcub_vinar_11258 .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Ilić, Svetlana M.
AU  - Gordić, Milan V.
AU  - Ostojić, Sanja 
AU  - Micić, Darko M.
AU  - Veličković, Sava J.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6059
AB  - Manufacturing of synthetic composites consumes huge energy and their disposal at the end of the life cycle is very difficult since there is virtually no recycling option. Therefore, biocomposite materials have recently received considerable attention in academic research and industrial application compared to the synthetic composite materials due biodegradability, nontoxicity and economical point of view. Biocomposite membranes of highly methylated pectin and SBA-15, a form of mesoporous silica, were prepared by membrane casting. The amount of SBA-15 was 10%, 20% and 30% by membrane mass. These membranes were characterized by optical microscopy, FTIR, XRD, thermogravimetry, mechanical analysis and swelling in water, HCl, NaOH and methanol. The incorporation of SBA-15 in pectin matrix enhanced the stability of these membranes in all tested solutions, compared to the pure pectin membranes. The pectin/SBA photomicrographs contain rod-like domains which indicate the presence of SBA-15 in membrane. Mechanical analysis proves that incorporation of SBA-15 enhances the elasticity and tensile strength of pectin membranes. Thermogravimety in nitrogen has shown that the presence of SBA-15 in the membranes increased the onset temperatures of pectin degradation. The novel composite material represents promising way for practical membrane application. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Composites: Part B: Engineering
T1  - Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15
VL  - 64
SP  - 162
EP  - 167
DO  - 10.1016/j.compositesb.2014.04.019
ER  - 

@article{
author = "Nešić, Aleksandra and Kokunešoski, Maja and Ilić, Svetlana M. and Gordić, Milan V. and Ostojić, Sanja  and Micić, Darko M. and Veličković, Sava J.",
year = "2014",
abstract = "Manufacturing of synthetic composites consumes huge energy and their disposal at the end of the life cycle is very difficult since there is virtually no recycling option. Therefore, biocomposite materials have recently received considerable attention in academic research and industrial application compared to the synthetic composite materials due biodegradability, nontoxicity and economical point of view. Biocomposite membranes of highly methylated pectin and SBA-15, a form of mesoporous silica, were prepared by membrane casting. The amount of SBA-15 was 10%, 20% and 30% by membrane mass. These membranes were characterized by optical microscopy, FTIR, XRD, thermogravimetry, mechanical analysis and swelling in water, HCl, NaOH and methanol. The incorporation of SBA-15 in pectin matrix enhanced the stability of these membranes in all tested solutions, compared to the pure pectin membranes. The pectin/SBA photomicrographs contain rod-like domains which indicate the presence of SBA-15 in membrane. Mechanical analysis proves that incorporation of SBA-15 enhances the elasticity and tensile strength of pectin membranes. Thermogravimety in nitrogen has shown that the presence of SBA-15 in the membranes increased the onset temperatures of pectin degradation. The novel composite material represents promising way for practical membrane application. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Composites: Part B: Engineering",
title = "Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15",
volume = "64",
pages = "162-167",
doi = "10.1016/j.compositesb.2014.04.019"
}

Nešić, A., Kokunešoski, M., Ilić, S. M., Gordić, M. V., Ostojić, S., Micić, D. M.,& Veličković, S. J.. (2014). Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15. in Composites: Part B: Engineering, 64, 162-167.
https://doi.org/10.1016/j.compositesb.2014.04.019

Nešić A, Kokunešoski M, Ilić SM, Gordić MV, Ostojić S, Micić DM, Veličković SJ. Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15. in Composites: Part B: Engineering. 2014;64:162-167.
doi:10.1016/j.compositesb.2014.04.019 .

Nešić, Aleksandra, Kokunešoski, Maja, Ilić, Svetlana M., Gordić, Milan V., Ostojić, Sanja , Micić, Darko M., Veličković, Sava J., "Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15" in Composites: Part B: Engineering, 64 (2014):162-167,
https://doi.org/10.1016/j.compositesb.2014.04.019 . .

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  - JOUR
AU  - Nešić, Aleksandra
AU  - Veličković, Sava J.
AU  - Antonović, Dušan
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5991
AB  - Pectin, with its tendency to gel in the presence of metal ions has become a widely used material for capturing the metal ions from wastewaters. Its dye-capturing properties have been much less investigated, and this paper is the first to show how films based on amidated pectin can be used for cationic dye adsorption. In the present study amidated pectin/montmorillonite composite films were synthesized by membrane casting, and they are stable in aqueous solution both below and above pectin pK(a). FTIR, thermogravimetry and SEM-EDAX have confirmed the presence of montmorillonite in the cast films and the interactions between the two constituents. In order to evaluate the cationic dye adsorption of these films Basic Yellow 28 was used, showing that the films have higher adsorption capacity compared to the others reported in the literature. The results were fitted into Langmuir, Freundlich and Temkin isotherms indicating an exothermic process and setting the optimum amount of montmorillonite in the films to 30% of pectin mass. According to the Langmuir isotherm the maximum adsorption capacity is 571.4 mg/g. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. B: Biointerfaces
T1  - Novel composite films based on amidated pectin for cationic dye adsorption
VL  - 116
SP  - 620
EP  - 626
DO  - 10.1016/j.colsurfb.2013.10.031
ER  - 

@article{
author = "Nešić, Aleksandra and Veličković, Sava J. and Antonović, Dušan",
year = "2014",
abstract = "Pectin, with its tendency to gel in the presence of metal ions has become a widely used material for capturing the metal ions from wastewaters. Its dye-capturing properties have been much less investigated, and this paper is the first to show how films based on amidated pectin can be used for cationic dye adsorption. In the present study amidated pectin/montmorillonite composite films were synthesized by membrane casting, and they are stable in aqueous solution both below and above pectin pK(a). FTIR, thermogravimetry and SEM-EDAX have confirmed the presence of montmorillonite in the cast films and the interactions between the two constituents. In order to evaluate the cationic dye adsorption of these films Basic Yellow 28 was used, showing that the films have higher adsorption capacity compared to the others reported in the literature. The results were fitted into Langmuir, Freundlich and Temkin isotherms indicating an exothermic process and setting the optimum amount of montmorillonite in the films to 30% of pectin mass. According to the Langmuir isotherm the maximum adsorption capacity is 571.4 mg/g. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. B: Biointerfaces",
title = "Novel composite films based on amidated pectin for cationic dye adsorption",
volume = "116",
pages = "620-626",
doi = "10.1016/j.colsurfb.2013.10.031"
}

Nešić, A., Veličković, S. J.,& Antonović, D.. (2014). Novel composite films based on amidated pectin for cationic dye adsorption. in Colloids and Surfaces. B: Biointerfaces, 116, 620-626.
https://doi.org/10.1016/j.colsurfb.2013.10.031

Nešić A, Veličković SJ, Antonović D. Novel composite films based on amidated pectin for cationic dye adsorption. in Colloids and Surfaces. B: Biointerfaces. 2014;116:620-626.
doi:10.1016/j.colsurfb.2013.10.031 .

Nešić, Aleksandra, Veličković, Sava J., Antonović, Dušan, "Novel composite films based on amidated pectin for cationic dye adsorption" in Colloids and Surfaces. B: Biointerfaces, 116 (2014):620-626,
https://doi.org/10.1016/j.colsurfb.2013.10.031 . .

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  - JOUR
AU  - Nešić, Aleksandra
AU  - Veličković, Sava J.
AU  - Antonović, Dušan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5632
AB  - This study represents new material based on chitosan modified by zeolite A as adsorbent for anionic dye, using Bezactive Orange 16 as a model compound. Interactions between dye and chitosan/zeolite A film at initial concentrations and pH dye solution was investigated. In order to determine kinetics and the mechanism of adsorption four kinetic models were used. The results showed that the adsorption of Bezactive Orange 16 dye onto chitosan/zeolite A can be best described by pseudo-second order model. According to the Langmuir model, the maximum adsorption capacity reached 305.8 mg/g. The films could be potentially used as absorbents for anionic dye removal in wastewater treatment process. (C) 2013 Elsevier Ltd. All rights reserved.
T2  - Composites: Part B: Engineering
T1  - Modification of chitosan by zeolite A and adsorption of Bezactive Orange 16 from aqueous solution
VL  - 53
SP  - 145
EP  - 151
DO  - 10.1016/j.compositesb.2013.04.053
ER  - 

@article{
author = "Nešić, Aleksandra and Veličković, Sava J. and Antonović, Dušan",
year = "2013",
abstract = "This study represents new material based on chitosan modified by zeolite A as adsorbent for anionic dye, using Bezactive Orange 16 as a model compound. Interactions between dye and chitosan/zeolite A film at initial concentrations and pH dye solution was investigated. In order to determine kinetics and the mechanism of adsorption four kinetic models were used. The results showed that the adsorption of Bezactive Orange 16 dye onto chitosan/zeolite A can be best described by pseudo-second order model. According to the Langmuir model, the maximum adsorption capacity reached 305.8 mg/g. The films could be potentially used as absorbents for anionic dye removal in wastewater treatment process. (C) 2013 Elsevier Ltd. All rights reserved.",
journal = "Composites: Part B: Engineering",
title = "Modification of chitosan by zeolite A and adsorption of Bezactive Orange 16 from aqueous solution",
volume = "53",
pages = "145-151",
doi = "10.1016/j.compositesb.2013.04.053"
}

Nešić, A., Veličković, S. J.,& Antonović, D.. (2013). Modification of chitosan by zeolite A and adsorption of Bezactive Orange 16 from aqueous solution. in Composites: Part B: Engineering, 53, 145-151.
https://doi.org/10.1016/j.compositesb.2013.04.053

Nešić A, Veličković SJ, Antonović D. Modification of chitosan by zeolite A and adsorption of Bezactive Orange 16 from aqueous solution. in Composites: Part B: Engineering. 2013;53:145-151.
doi:10.1016/j.compositesb.2013.04.053 .

Nešić, Aleksandra, Veličković, Sava J., Antonović, Dušan, "Modification of chitosan by zeolite A and adsorption of Bezactive Orange 16 from aqueous solution" in Composites: Part B: Engineering, 53 (2013):145-151,
https://doi.org/10.1016/j.compositesb.2013.04.053 . .

TY  - JOUR
AU  - Panić, Vesna V.
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Veličković, Sava J.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5835
AB  - The use of polymeric adsorbents for the removal of azo dyes from solution has been reviewed. Adsorption techniques are widely used to remove certain classes of pollutants from waters, especially those which are not easily biodegradable. The removal of azo dyes as pollutants from wastewaters of textile, paper, printing, leather, pharmaceutical and other industries has been addressed by the researchers. The wider use of already available adsorbents is restricted due to their high costs which lead to investigation and development of new materials that can be cheaper, eficient and easy regenerated. The aim of this article is to present to the readers the widespread investigations in recent years of synthetic and natural polymers as adsorbents and potential replacement of conventional adsorbents. This review presents only the data obtained using raw, hydrogel, grafted and crosslinked forms of synthetic and nature based polymers, and the discussion is limited to these polymer-based materials and their adsorption properties.
T2  - Hemijska industrija
T1  - Adsorption of azo dyes on polymer materials
VL  - 67
IS  - 6
SP  - 881
EP  - 900
DO  - 10.2298/HEMIND121203020P
ER  - 

@article{
author = "Panić, Vesna V. and Šešlija, Sanja and Nešić, Aleksandra and Veličković, Sava J.",
year = "2013",
abstract = "The use of polymeric adsorbents for the removal of azo dyes from solution has been reviewed. Adsorption techniques are widely used to remove certain classes of pollutants from waters, especially those which are not easily biodegradable. The removal of azo dyes as pollutants from wastewaters of textile, paper, printing, leather, pharmaceutical and other industries has been addressed by the researchers. The wider use of already available adsorbents is restricted due to their high costs which lead to investigation and development of new materials that can be cheaper, eficient and easy regenerated. The aim of this article is to present to the readers the widespread investigations in recent years of synthetic and natural polymers as adsorbents and potential replacement of conventional adsorbents. This review presents only the data obtained using raw, hydrogel, grafted and crosslinked forms of synthetic and nature based polymers, and the discussion is limited to these polymer-based materials and their adsorption properties.",
journal = "Hemijska industrija",
title = "Adsorption of azo dyes on polymer materials",
volume = "67",
number = "6",
pages = "881-900",
doi = "10.2298/HEMIND121203020P"
}

Panić, V. V., Šešlija, S., Nešić, A.,& Veličković, S. J.. (2013). Adsorption of azo dyes on polymer materials. in Hemijska industrija, 67(6), 881-900.
https://doi.org/10.2298/HEMIND121203020P

Panić VV, Šešlija S, Nešić A, Veličković SJ. Adsorption of azo dyes on polymer materials. in Hemijska industrija. 2013;67(6):881-900.
doi:10.2298/HEMIND121203020P .

Panić, Vesna V., Šešlija, Sanja, Nešić, Aleksandra, Veličković, Sava J., "Adsorption of azo dyes on polymer materials" in Hemijska industrija, 67, no. 6 (2013):881-900,
https://doi.org/10.2298/HEMIND121203020P . .

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  - JOUR
AU  - Nešić, Aleksandra
AU  - Veličković, Sava J.
AU  - Antonović, Dušan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4757
AB  - The synthesis, characterization and environmental application of chitosan/montmorillonite membrane for adsorption Bezactiv Orange V-3R were investigated. Chitosan/montmorillonite membranes were synthesized in different ratios, containing 10-50% of montmorillonite (MMT) in membrane. These membranes were characterized by using Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG) and scanning electron microscopy (SEM). The adsorption kinetics were investigated using three different concentrations of Bezactiv Orange dye (30, 50 and 80 mg/L). The adsorption capacity increases with increasing amount of MMT in membranes. These membranes show the highest adsorption capacity when the initial dye concentration was 80 mg/L The results show that the optimum condition for adsorption of Bezactiv Orange is pH 6. A comparison of kinetic models was evaluated for the pseudo-first and pseudo-second order and intra-particle diffusion. The experimental data were fitted to the pseudo-second order kinetic model, and also followed by intra-particle diffusion. Intra-particle diffusion is not the only rate-controlling step. The Langmuir and Freundlich adsorption isotherms were applied to experimental equilibrium data at different concentration of dye solution. The results indicated the competency of chitosan/MMT membranes adsorbent for Bezactiv Orange adsorption. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Journal of Hazardous Materials
T1  - Characterization of chitosan/montmorillonite membranes as adsorbents for Bezactiv Orange V-3R dye
VL  - 209
SP  - 256
EP  - 263
DO  - 10.1016/j.jhazmat.2012.01.020
ER  - 

@article{
author = "Nešić, Aleksandra and Veličković, Sava J. and Antonović, Dušan",
year = "2012",
abstract = "The synthesis, characterization and environmental application of chitosan/montmorillonite membrane for adsorption Bezactiv Orange V-3R were investigated. Chitosan/montmorillonite membranes were synthesized in different ratios, containing 10-50% of montmorillonite (MMT) in membrane. These membranes were characterized by using Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG) and scanning electron microscopy (SEM). The adsorption kinetics were investigated using three different concentrations of Bezactiv Orange dye (30, 50 and 80 mg/L). The adsorption capacity increases with increasing amount of MMT in membranes. These membranes show the highest adsorption capacity when the initial dye concentration was 80 mg/L The results show that the optimum condition for adsorption of Bezactiv Orange is pH 6. A comparison of kinetic models was evaluated for the pseudo-first and pseudo-second order and intra-particle diffusion. The experimental data were fitted to the pseudo-second order kinetic model, and also followed by intra-particle diffusion. Intra-particle diffusion is not the only rate-controlling step. The Langmuir and Freundlich adsorption isotherms were applied to experimental equilibrium data at different concentration of dye solution. The results indicated the competency of chitosan/MMT membranes adsorbent for Bezactiv Orange adsorption. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Journal of Hazardous Materials",
title = "Characterization of chitosan/montmorillonite membranes as adsorbents for Bezactiv Orange V-3R dye",
volume = "209",
pages = "256-263",
doi = "10.1016/j.jhazmat.2012.01.020"
}

Nešić, A., Veličković, S. J.,& Antonović, D.. (2012). Characterization of chitosan/montmorillonite membranes as adsorbents for Bezactiv Orange V-3R dye. in Journal of Hazardous Materials, 209, 256-263.
https://doi.org/10.1016/j.jhazmat.2012.01.020

Nešić A, Veličković SJ, Antonović D. Characterization of chitosan/montmorillonite membranes as adsorbents for Bezactiv Orange V-3R dye. in Journal of Hazardous Materials. 2012;209:256-263.
doi:10.1016/j.jhazmat.2012.01.020 .

Nešić, Aleksandra, Veličković, Sava J., Antonović, Dušan, "Characterization of chitosan/montmorillonite membranes as adsorbents for Bezactiv Orange V-3R dye" in Journal of Hazardous Materials, 209 (2012):256-263,
https://doi.org/10.1016/j.jhazmat.2012.01.020 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Trifunović, Snežana
AU  - Grujić, Aleksandar S.
AU  - Veličković, Sava J.
AU  - Antonović, Dušan
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4571
AB  - Complexes based on amidated pectin (AP) and poly(itaconic acid) (PIA) were prepared by casting films from solutions of AP and PIA in different ratios with the pectin amount ranging from 10% to 90% by mass. The complexes were investigated by elemental analysis, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetry (TG). In all investigated ratios of AP/PIA glassy transparent films with a uniform structure were obtained. The results of elemental analysis confirmed the composition of the complexes, and FTIR spectroscopy has shown carboxylic and amide peak shifting, indicating complex formation between AP and PIA. Comparison of thermograms of AP/PIA films with different ratios of AP indicated that the increase of the amount of AP increases the thermal stability of the films by retarding the onset of the main degradation processes. (C) 2011 Elsevier Ltd. All rights reserved.
T2  - Carbohydrate Research
T1  - Complexation of amidated pectin with poly(itaconic acid) as a polycarboxylic polymer model compound
VL  - 346
IS  - 15
SP  - 2463
EP  - 2468
DO  - 10.1016/j.carres.2011.08.021
ER  - 

@article{
author = "Nešić, Aleksandra and Trifunović, Snežana and Grujić, Aleksandar S. and Veličković, Sava J. and Antonović, Dušan",
year = "2011",
abstract = "Complexes based on amidated pectin (AP) and poly(itaconic acid) (PIA) were prepared by casting films from solutions of AP and PIA in different ratios with the pectin amount ranging from 10% to 90% by mass. The complexes were investigated by elemental analysis, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetry (TG). In all investigated ratios of AP/PIA glassy transparent films with a uniform structure were obtained. The results of elemental analysis confirmed the composition of the complexes, and FTIR spectroscopy has shown carboxylic and amide peak shifting, indicating complex formation between AP and PIA. Comparison of thermograms of AP/PIA films with different ratios of AP indicated that the increase of the amount of AP increases the thermal stability of the films by retarding the onset of the main degradation processes. (C) 2011 Elsevier Ltd. All rights reserved.",
journal = "Carbohydrate Research",
title = "Complexation of amidated pectin with poly(itaconic acid) as a polycarboxylic polymer model compound",
volume = "346",
number = "15",
pages = "2463-2468",
doi = "10.1016/j.carres.2011.08.021"
}

Nešić, A., Trifunović, S., Grujić, A. S., Veličković, S. J.,& Antonović, D.. (2011). Complexation of amidated pectin with poly(itaconic acid) as a polycarboxylic polymer model compound. in Carbohydrate Research, 346(15), 2463-2468.
https://doi.org/10.1016/j.carres.2011.08.021

Nešić A, Trifunović S, Grujić AS, Veličković SJ, Antonović D. Complexation of amidated pectin with poly(itaconic acid) as a polycarboxylic polymer model compound. in Carbohydrate Research. 2011;346(15):2463-2468.
doi:10.1016/j.carres.2011.08.021 .

Nešić, Aleksandra, Trifunović, Snežana, Grujić, Aleksandar S., Veličković, Sava J., Antonović, Dušan, "Complexation of amidated pectin with poly(itaconic acid) as a polycarboxylic polymer model compound" in Carbohydrate Research, 346, no. 15 (2011):2463-2468,
https://doi.org/10.1016/j.carres.2011.08.021 . .

TY  - CONF
AU  - Đustebek, Jasmina B.
AU  - Cvetićanin, Jelena M.
AU  - Đorđević, Vesna R.
AU  - Veličković, Sava J.
AU  - Veljković, Miomir V.
AU  - Nešković, Olivera M.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9449
AB  - Mass spectral studies (both TIMS – thermal ionization and MALDI TOF – matrixassisted laser desorption time-of-flight mass spectrometry) of the endohedral metallofullerenes, 99mTc@C60 and 99mTc@C70, provided detailed structural and reactivity information about these unusual species. MS experiment revealed that both fullerenes and endohedral metallofullerenes fragment by multiple C2 loss. However, a difference in the terminal fragmentation products was observed for metallofullerene relative to C60, suggesting that the encapsulation metal strongly impacts the fragmentation product. Singly charged cations of the metallofullerenes (M@Cn + ) were completely unreactive in the gas phase with oxygenated compounds such as ethylene oxide: however, the corresponding neutral species appear to react readily with oxygenated species. Collisional dissociation of the ionized endohedral fullerenes listed above revealed multiple C2 loss (either as sequential C2 loss or larger C2n eliminations) to generate similar terminal fragmentation products, which might be predicted due to the similar ionic radii of the encapsulated metals. The observed ionization energies of endohedral molecules were, 5.1 ± 0.1 eV and 5.3 ± 0.1 eV, respectively.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry
T1  - Tims and maldi tof of endohedral 99mTc@C60 metallofullerene
SP  - 504
EP  - 506
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9449
ER  - 

@conference{
author = "Đustebek, Jasmina B. and Cvetićanin, Jelena M. and Đorđević, Vesna R. and Veličković, Sava J. and Veljković, Miomir V. and Nešković, Olivera M.",
year = "2006",
abstract = "Mass spectral studies (both TIMS – thermal ionization and MALDI TOF – matrixassisted laser desorption time-of-flight mass spectrometry) of the endohedral metallofullerenes, 99mTc@C60 and 99mTc@C70, provided detailed structural and reactivity information about these unusual species. MS experiment revealed that both fullerenes and endohedral metallofullerenes fragment by multiple C2 loss. However, a difference in the terminal fragmentation products was observed for metallofullerene relative to C60, suggesting that the encapsulation metal strongly impacts the fragmentation product. Singly charged cations of the metallofullerenes (M@Cn + ) were completely unreactive in the gas phase with oxygenated compounds such as ethylene oxide: however, the corresponding neutral species appear to react readily with oxygenated species. Collisional dissociation of the ionized endohedral fullerenes listed above revealed multiple C2 loss (either as sequential C2 loss or larger C2n eliminations) to generate similar terminal fragmentation products, which might be predicted due to the similar ionic radii of the encapsulated metals. The observed ionization energies of endohedral molecules were, 5.1 ± 0.1 eV and 5.3 ± 0.1 eV, respectively.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry",
title = "Tims and maldi tof of endohedral 99mTc@C60 metallofullerene",
pages = "504-506",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9449"
}

Đustebek, J. B., Cvetićanin, J. M., Đorđević, V. R., Veličković, S. J., Veljković, M. V.,& Nešković, O. M.. (2006). Tims and maldi tof of endohedral 99mTc@C60 metallofullerene. in Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry
Society of Physical Chemists of Serbia., 504-506.
https://hdl.handle.net/21.15107/rcub_vinar_9449

Đustebek JB, Cvetićanin JM, Đorđević VR, Veličković SJ, Veljković MV, Nešković OM. Tims and maldi tof of endohedral 99mTc@C60 metallofullerene. in Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry. 2006;:504-506.
https://hdl.handle.net/21.15107/rcub_vinar_9449 .

Đustebek, Jasmina B., Cvetićanin, Jelena M., Đorđević, Vesna R., Veličković, Sava J., Veljković, Miomir V., Nešković, Olivera M., "Tims and maldi tof of endohedral 99mTc@C60 metallofullerene" in Physical chemistry 2006: 8th international conference on fundemental and applied aspract of physical chemistry (2006):504-506,
https://hdl.handle.net/21.15107/rcub_vinar_9449 .