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  - Fidanovski, Bojana Z.
AU  - Spasojević, Pavle M.
AU  - Panić, Vesna V.
AU  - Šešlija, Sanja
AU  - Spasojević, Jelena P.
AU  - Popović, Ivanka G.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1877
AB  - The sustainable tomorrow for future generations lies with the present industrial development toward the proper utilization of various bio-based products. For a transition to a higher level of sustainability, it is necessary to form a new platform for advanced technology products. This paper reports the development of new fully bio-based unsaturated polyesters resins (UPRs). A series of prepolymers were synthesized by varying saturated diacids (oxalic, succinic and adipic acid), itaconic acid and 1,2-propandiol. Dimethyl itaconate was used as a reactive diluent (RD) in amounts of 30, 35 and 40 wt%. Rheological measurements showed that the obtained resins possessed viscosities (234-2226 mPa s) amenable to a variety of liquid molding techniques. The impact of composition variables-prepolymer structure and amount of RD-on the chemical, mechanical and thermal properties of the thermosets was examined by DMA, TA and tensile measurements and was discussed in detail. The tensile properties (37-52 MPa), glass transition temperature (60-97 A degrees C) and coefficient of thermal expansion (71-168 10(-6) A degrees C-1) of the cured resins were in the desired range for UPRs. This investigation showed that UPRs based on itaconic acid can be tailored during synthesis of the prepolymer to meet the needs of different property profiles.
T2  - Journal of Materials Science
T1  - Synthesis and characterization of fully bio-based unsaturated polyester resins
VL  - 53
IS  - 6
SP  - 4635
EP  - 4644
DO  - 10.1007/s10853-017-1822-y
ER  - 

@article{
author = "Fidanovski, Bojana Z. and Spasojević, Pavle M. and Panić, Vesna V. and Šešlija, Sanja and Spasojević, Jelena P. and Popović, Ivanka G.",
year = "2018",
abstract = "The sustainable tomorrow for future generations lies with the present industrial development toward the proper utilization of various bio-based products. For a transition to a higher level of sustainability, it is necessary to form a new platform for advanced technology products. This paper reports the development of new fully bio-based unsaturated polyesters resins (UPRs). A series of prepolymers were synthesized by varying saturated diacids (oxalic, succinic and adipic acid), itaconic acid and 1,2-propandiol. Dimethyl itaconate was used as a reactive diluent (RD) in amounts of 30, 35 and 40 wt%. Rheological measurements showed that the obtained resins possessed viscosities (234-2226 mPa s) amenable to a variety of liquid molding techniques. The impact of composition variables-prepolymer structure and amount of RD-on the chemical, mechanical and thermal properties of the thermosets was examined by DMA, TA and tensile measurements and was discussed in detail. The tensile properties (37-52 MPa), glass transition temperature (60-97 A degrees C) and coefficient of thermal expansion (71-168 10(-6) A degrees C-1) of the cured resins were in the desired range for UPRs. This investigation showed that UPRs based on itaconic acid can be tailored during synthesis of the prepolymer to meet the needs of different property profiles.",
journal = "Journal of Materials Science",
title = "Synthesis and characterization of fully bio-based unsaturated polyester resins",
volume = "53",
number = "6",
pages = "4635-4644",
doi = "10.1007/s10853-017-1822-y"
}

Fidanovski, B. Z., Spasojević, P. M., Panić, V. V., Šešlija, S., Spasojević, J. P.,& Popović, I. G.. (2018). Synthesis and characterization of fully bio-based unsaturated polyester resins. in Journal of Materials Science, 53(6), 4635-4644.
https://doi.org/10.1007/s10853-017-1822-y

Fidanovski BZ, Spasojević PM, Panić VV, Šešlija S, Spasojević JP, Popović IG. Synthesis and characterization of fully bio-based unsaturated polyester resins. in Journal of Materials Science. 2018;53(6):4635-4644.
doi:10.1007/s10853-017-1822-y .

Fidanovski, Bojana Z., Spasojević, Pavle M., Panić, Vesna V., Šešlija, Sanja, Spasojević, Jelena P., Popović, Ivanka G., "Synthesis and characterization of fully bio-based unsaturated polyester resins" in Journal of Materials Science, 53, no. 6 (2018):4635-4644,
https://doi.org/10.1007/s10853-017-1822-y . .

TY  - JOUR
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Škorić, Marija
AU  - Krušić, Melina
AU  - Santagata, Gabriella
AU  - Malinconico, Mario
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7614
AB  - The present paper reports on pectin based films modified with carboxymethyl cellulose intended for food packaging. The films are prepared by solvent-casting method with different carboxymethyl cellulose content and cross-linker concentration (Ca 2+ ions) in the presence of glycerol as a plasticizer. FT-IR spectra of the prepared films propose that carboxyl group from pectin are mainly involved in interactions with CMC, whereas −OH groups are mainly involved in self-associated hydrogen bonding of neat polymers. Further, an addition of carboxymethyl cellulose improved mechanical properties compared to pure pectin films, while TGA analysis confirmed satisfying thermal stability regarding their potential application as packaging material. Finally, water vapor permeabi lity values are in the range of 1.32 × 10 −7 up to 2.03 × 10 −7 g/m h Pa. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
T2  - Macromolecular Symposia
T1  - Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material
VL  - 378
IS  - 1
DO  - 10.1002/masy.201600163
ER  - 

@article{
author = "Šešlija, Sanja and Nešić, Aleksandra and Škorić, Marija and Krušić, Melina and Santagata, Gabriella and Malinconico, Mario",
year = "2018",
abstract = "The present paper reports on pectin based films modified with carboxymethyl cellulose intended for food packaging. The films are prepared by solvent-casting method with different carboxymethyl cellulose content and cross-linker concentration (Ca 2+ ions) in the presence of glycerol as a plasticizer. FT-IR spectra of the prepared films propose that carboxyl group from pectin are mainly involved in interactions with CMC, whereas −OH groups are mainly involved in self-associated hydrogen bonding of neat polymers. Further, an addition of carboxymethyl cellulose improved mechanical properties compared to pure pectin films, while TGA analysis confirmed satisfying thermal stability regarding their potential application as packaging material. Finally, water vapor permeabi lity values are in the range of 1.32 × 10 −7 up to 2.03 × 10 −7 g/m h Pa. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
journal = "Macromolecular Symposia",
title = "Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material",
volume = "378",
number = "1",
doi = "10.1002/masy.201600163"
}

Šešlija, S., Nešić, A., Škorić, M., Krušić, M., Santagata, G.,& Malinconico, M.. (2018). Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material. in Macromolecular Symposia, 378(1).
https://doi.org/10.1002/masy.201600163

Šešlija S, Nešić A, Škorić M, Krušić M, Santagata G, Malinconico M. Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material. in Macromolecular Symposia. 2018;378(1).
doi:10.1002/masy.201600163 .

Šešlija, Sanja, Nešić, Aleksandra, Škorić, Marija, Krušić, Melina, Santagata, Gabriella, Malinconico, Mario, "Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material" in Macromolecular Symposia, 378, no. 1 (2018),
https://doi.org/10.1002/masy.201600163 . .

TY  - JOUR
AU  - Panić, Vesna V.
AU  - Šešlija, Sanja
AU  - Popović, Ivanka G.
AU  - Spasojević, Vuk D.
AU  - Popović, Aleksandar R.
AU  - Nikolić, Vladimir B.
AU  - Spasojević, Pavle M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1873
AB  - For the preparation of fully biobased unsaturated polyester resins (UPRs), the replacement of styrene with alternate nonpetroleum-based monomers turned out to be one of the most challenging tasks. Its complexity lies in the fact that reactive diluents (RD) have to have low viscosity and volatility, good compatibility with prepolymer, and capability to homopolymerize and copolymerize with its unsaturations. In this context, we directed our efforts to develop fully biobased UPRs using the dialkyl itaconates as an alternative to styrene. Therefore, a series of 100% biobased UPRs were prepared from itaconic acid and 1,2-propandiol and diluted by dialkyl itaconates. The resins were characterized by Fourier transform infrared spectroscopy, NMR, volatility, and viscosity measurements, while the cured samples were characterized by dynamic mechanical properties, thermomechanical analysis, thermogravimetric analysis data, and tensile tests. The influence of RD structure on the properties of cured samples was discussed in detail. It was shown that the prepared resins had evaporation rates of dialkyl itaconates of several orders of magnitude less compared to styrene. The cured resins with dimethyl itaconate showed comparable or even better thermal and mechanical properties compared to the one with styrene. This investigation showed that itaconic acid and dialkyl itaconates are promising bioresources for the preparation of fully biobased UPRs for mass consumption.
T2  - Biomacromolecules
T1  - Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid
VL  - 18
IS  - 12
SP  - 3881
EP  - 3891
DO  - 10.1021/acs.biomac.7b00840
ER  - 

@article{
author = "Panić, Vesna V. and Šešlija, Sanja and Popović, Ivanka G. and Spasojević, Vuk D. and Popović, Aleksandar R. and Nikolić, Vladimir B. and Spasojević, Pavle M.",
year = "2017",
abstract = "For the preparation of fully biobased unsaturated polyester resins (UPRs), the replacement of styrene with alternate nonpetroleum-based monomers turned out to be one of the most challenging tasks. Its complexity lies in the fact that reactive diluents (RD) have to have low viscosity and volatility, good compatibility with prepolymer, and capability to homopolymerize and copolymerize with its unsaturations. In this context, we directed our efforts to develop fully biobased UPRs using the dialkyl itaconates as an alternative to styrene. Therefore, a series of 100% biobased UPRs were prepared from itaconic acid and 1,2-propandiol and diluted by dialkyl itaconates. The resins were characterized by Fourier transform infrared spectroscopy, NMR, volatility, and viscosity measurements, while the cured samples were characterized by dynamic mechanical properties, thermomechanical analysis, thermogravimetric analysis data, and tensile tests. The influence of RD structure on the properties of cured samples was discussed in detail. It was shown that the prepared resins had evaporation rates of dialkyl itaconates of several orders of magnitude less compared to styrene. The cured resins with dimethyl itaconate showed comparable or even better thermal and mechanical properties compared to the one with styrene. This investigation showed that itaconic acid and dialkyl itaconates are promising bioresources for the preparation of fully biobased UPRs for mass consumption.",
journal = "Biomacromolecules",
title = "Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid",
volume = "18",
number = "12",
pages = "3881-3891",
doi = "10.1021/acs.biomac.7b00840"
}

Panić, V. V., Šešlija, S., Popović, I. G., Spasojević, V. D., Popović, A. R., Nikolić, V. B.,& Spasojević, P. M.. (2017). Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid. in Biomacromolecules, 18(12), 3881-3891.
https://doi.org/10.1021/acs.biomac.7b00840

Panić VV, Šešlija S, Popović IG, Spasojević VD, Popović AR, Nikolić VB, Spasojević PM. Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid. in Biomacromolecules. 2017;18(12):3881-3891.
doi:10.1021/acs.biomac.7b00840 .

Panić, Vesna V., Šešlija, Sanja, Popović, Ivanka G., Spasojević, Vuk D., Popović, Aleksandar R., Nikolić, Vladimir B., Spasojević, Pavle M., "Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid" in Biomacromolecules, 18, no. 12 (2017):3881-3891,
https://doi.org/10.1021/acs.biomac.7b00840 . .

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 . .