TY  - JOUR
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Ružić, Jovana
AU  - Kalagasidis Krušić, Melina
AU  - Veličković, Sava
AU  - Avolio, Roberto
AU  - Santagata, Gabriella
AU  - Malinconico, Mario
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3951
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.
PB  - Elsevier Sci Ltd, Oxford
T2  - Food Hydrocolloids
T1  - Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation
EP  - 501
SP  - 494
VL  - 77
DO  - 10.1016/j.foodhyd.2017.10.027
ER  - 

@article{
author = "Šešlija, Sanja and Nešić, Aleksandra and Ružić, Jovana and Kalagasidis Krušić, Melina and Veličković, Sava and Avolio, Roberto and Santagata, Gabriella and Malinconico, Mario",
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.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Food Hydrocolloids",
title = "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation",
pages = "501-494",
volume = "77",
doi = "10.1016/j.foodhyd.2017.10.027"
}

Šešlija, S., Nešić, A., Ružić, J., Kalagasidis Krušić, M., Veličković, S., Avolio, R., Santagata, G.,& Malinconico, M.. (2018). Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids
Elsevier Sci Ltd, Oxford., 77, 494-501.
https://doi.org/10.1016/j.foodhyd.2017.10.027

Šešlija S, Nešić A, Ružić J, Kalagasidis Krušić M, Veličković S, Avolio R, Santagata G, Malinconico M. 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 .

Šešlija, Sanja, Nešić, Aleksandra, Ružić, Jovana, Kalagasidis Krušić, Melina, Veličković, Sava, Avolio, Roberto, Santagata, Gabriella, Malinconico, Mario, "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  - Ružić, Jovana
AU  - Stašić, Jelena M.
AU  - Božić, Dušan
AU  - Dojčinović, Marina
AU  - Volkov-Husović, Tatjana
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3647
AB  - Copper matrix composites reinforced with ZrB2 particles were produced in two ways: by hot pressing (HP) and laser-sintering process. Powder mixture Cu-Zr-B was mechanically alloyed before densification processes. Variations in the microstructure of treated samples obtained during cavitation test were analyzed by scanning electron microscopy (SEM). Cavitation erosion resistance was investigated with the standard test method for cavitation erosion using vibratory apparatus. Changes in mechanical alloying duration show a strong influence on cavitation erosion resistance of Cu-ZrB2 composites regardless the number of reinforcements. Laser-sintered samples show better cavitation erosion resistance than hot-pressed samples.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Influence of the fabrication process of copper matrix composites on cavitation erosion resistance
EP  - 301
IS  - 4
SP  - 291
VL  - 23
DO  - 10.30544/244291
ER  - 

@article{
author = "Ružić, Jovana and Stašić, Jelena M. and Božić, Dušan and Dojčinović, Marina and Volkov-Husović, Tatjana",
year = "2017",
abstract = "Copper matrix composites reinforced with ZrB2 particles were produced in two ways: by hot pressing (HP) and laser-sintering process. Powder mixture Cu-Zr-B was mechanically alloyed before densification processes. Variations in the microstructure of treated samples obtained during cavitation test were analyzed by scanning electron microscopy (SEM). Cavitation erosion resistance was investigated with the standard test method for cavitation erosion using vibratory apparatus. Changes in mechanical alloying duration show a strong influence on cavitation erosion resistance of Cu-ZrB2 composites regardless the number of reinforcements. Laser-sintered samples show better cavitation erosion resistance than hot-pressed samples.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Influence of the fabrication process of copper matrix composites on cavitation erosion resistance",
pages = "301-291",
number = "4",
volume = "23",
doi = "10.30544/244291"
}

Ružić, J., Stašić, J. M., Božić, D., Dojčinović, M.,& Volkov-Husović, T.. (2017). Influence of the fabrication process of copper matrix composites on cavitation erosion resistance. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 23(4), 291-301.
https://doi.org/10.30544/244291

Ružić J, Stašić JM, Božić D, Dojčinović M, Volkov-Husović T. Influence of the fabrication process of copper matrix composites on cavitation erosion resistance. in Metallurgical & Materials Engineering. 2017;23(4):291-301.
doi:10.30544/244291 .

Ružić, Jovana, Stašić, Jelena M., Božić, Dušan, Dojčinović, Marina, Volkov-Husović, Tatjana, "Influence of the fabrication process of copper matrix composites on cavitation erosion resistance" in Metallurgical & Materials Engineering, 23, no. 4 (2017):291-301,
https://doi.org/10.30544/244291 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Ružić, Jovana
AU  - Gordić, Milan V.
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Onjia, Antonije
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3696
AB  - In this work, the new biodegradable blend films composed of natural polymer pectin and synthetic polymer polyvinylpyrrolidone were obtained through casting process. The concentration of glycerol in all formulations was constant (2% v/v), while the amount of polyvinylpyrrolidone varied from 20 to 60% by mass of pectin. The molecular interactions between two components were elucidated by FTIR-ATR spectroscopy, while functional properties of these films were carried out by determination of puncture resistance, tensile strength, thermal stability, water vapor barrier, wettability and printability. The blending of pectin with PVP led to an improvement of mechanical resistance, barrier properties and hydrophobicity of these films for 57%, 58 and 24%, respectively, remaining adequate thermal stability. Since pectin and PVP are nontoxic, food-grade and biodegradable materials, this research present an ecosustainable approach to provide films with satisfied physical properties for use as packaging material of non-food products, such as water-treatment products (detergents, biocides, agrochemical compounds).
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials
EP  - 61
SP  - 56
VL  - 110
DO  - 10.1016/j.compositesb.2016.11.016
ER  - 

@article{
author = "Nešić, Aleksandra and Ružić, Jovana and Gordić, Milan V. and Ostojić, Sanja and Micić, Darko and Onjia, Antonije",
year = "2017",
abstract = "In this work, the new biodegradable blend films composed of natural polymer pectin and synthetic polymer polyvinylpyrrolidone were obtained through casting process. The concentration of glycerol in all formulations was constant (2% v/v), while the amount of polyvinylpyrrolidone varied from 20 to 60% by mass of pectin. The molecular interactions between two components were elucidated by FTIR-ATR spectroscopy, while functional properties of these films were carried out by determination of puncture resistance, tensile strength, thermal stability, water vapor barrier, wettability and printability. The blending of pectin with PVP led to an improvement of mechanical resistance, barrier properties and hydrophobicity of these films for 57%, 58 and 24%, respectively, remaining adequate thermal stability. Since pectin and PVP are nontoxic, food-grade and biodegradable materials, this research present an ecosustainable approach to provide films with satisfied physical properties for use as packaging material of non-food products, such as water-treatment products (detergents, biocides, agrochemical compounds).",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials",
pages = "61-56",
volume = "110",
doi = "10.1016/j.compositesb.2016.11.016"
}

Nešić, A., Ružić, J., Gordić, M. V., Ostojić, S., Micić, D.,& Onjia, A.. (2017). Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 110, 56-61.
https://doi.org/10.1016/j.compositesb.2016.11.016

Nešić A, Ružić J, Gordić MV, Ostojić S, Micić D, Onjia A. Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials. in Composites Part B-Engineering. 2017;110:56-61.
doi:10.1016/j.compositesb.2016.11.016 .

Nešić, Aleksandra, Ružić, Jovana, Gordić, Milan V., Ostojić, Sanja, Micić, Darko, Onjia, Antonije, "Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials" in Composites Part B-Engineering, 110 (2017):56-61,
https://doi.org/10.1016/j.compositesb.2016.11.016 . .