TY  - JOUR
AU  - Putić, Lana
AU  - Stajić-Trošić, Jasna
AU  - Ćosović, Vladan
AU  - Grujić, Aleksandar
AU  - Milanović, Jovana
AU  - Pilić, Branka
AU  - Stanković, Snežana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4992
AB  - This study investigates the effect of surface modification by deposition of electrospun fibers on properties and performance of three different microporous polypropylene/polyethylene (PP/PE) commercial nonwoven membrane supports (Novatexx 2430, 2465 and 2473). Polyamide (nylon 6) nanofiber webs with a small number of defects and fibers of about 100 nanometer diameter were successfully deposited onto a surface of the selected membrane supports. FESEM was used to examine microstructure and morphology of the unmodified substrates and the prepared composite two-layer membranes. DSC was applied to investigate thermal stability and FT-IR analysis to confirm the chemical composition of the studied membranes. Saline water permeability tests of the prepared two-layer composite membranes were carried out. The largest pressure difference was measured for PA nanofiber/Novatexx 2430 sample, which was ascribed to a denser net structure of the membrane support and possibly to the newly formed layer of dissolved salts on the membrane surface.
T2  - Journal of the Textile Institute
T1  - Characterization of microporous PP/PE nonwoven mats surface modified by deposition of electrospun nanofibers
EP  - 121
IS  - 1
SP  - 110
VL  - 114
DO  - 10.1080/00405000.2021.2024343
ER  - 

@article{
author = "Putić, Lana and Stajić-Trošić, Jasna and Ćosović, Vladan and Grujić, Aleksandar and Milanović, Jovana and Pilić, Branka and Stanković, Snežana",
year = "2023",
abstract = "This study investigates the effect of surface modification by deposition of electrospun fibers on properties and performance of three different microporous polypropylene/polyethylene (PP/PE) commercial nonwoven membrane supports (Novatexx 2430, 2465 and 2473). Polyamide (nylon 6) nanofiber webs with a small number of defects and fibers of about 100 nanometer diameter were successfully deposited onto a surface of the selected membrane supports. FESEM was used to examine microstructure and morphology of the unmodified substrates and the prepared composite two-layer membranes. DSC was applied to investigate thermal stability and FT-IR analysis to confirm the chemical composition of the studied membranes. Saline water permeability tests of the prepared two-layer composite membranes were carried out. The largest pressure difference was measured for PA nanofiber/Novatexx 2430 sample, which was ascribed to a denser net structure of the membrane support and possibly to the newly formed layer of dissolved salts on the membrane surface.",
journal = "Journal of the Textile Institute",
title = "Characterization of microporous PP/PE nonwoven mats surface modified by deposition of electrospun nanofibers",
pages = "121-110",
number = "1",
volume = "114",
doi = "10.1080/00405000.2021.2024343"
}

Putić, L., Stajić-Trošić, J., Ćosović, V., Grujić, A., Milanović, J., Pilić, B.,& Stanković, S.. (2023). Characterization of microporous PP/PE nonwoven mats surface modified by deposition of electrospun nanofibers. in Journal of the Textile Institute, 114(1), 110-121.
https://doi.org/10.1080/00405000.2021.2024343

Putić L, Stajić-Trošić J, Ćosović V, Grujić A, Milanović J, Pilić B, Stanković S. Characterization of microporous PP/PE nonwoven mats surface modified by deposition of electrospun nanofibers. in Journal of the Textile Institute. 2023;114(1):110-121.
doi:10.1080/00405000.2021.2024343 .

Putić, Lana, Stajić-Trošić, Jasna, Ćosović, Vladan, Grujić, Aleksandar, Milanović, Jovana, Pilić, Branka, Stanković, Snežana, "Characterization of microporous PP/PE nonwoven mats surface modified by deposition of electrospun nanofibers" in Journal of the Textile Institute, 114, no. 1 (2023):110-121,
https://doi.org/10.1080/00405000.2021.2024343 . .

TY  - JOUR
AU  - Ponjavić, Marijana
AU  - Malagurski, Ivana
AU  - Lazić, Jelena
AU  - Jeremić, Sanja
AU  - Pavlović, Vladimir
AU  - Prlainović, Nevena
AU  - Maksimović, Vesna
AU  - Ćosović, Vladan
AU  - Atanase, Leonard Ionut
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5866
AB  - The quest for sustainable biomaterials with excellent biocompatibility and tailorableproperties has put polyhydroxyalkanoates (PHAs) into the research spotlight. However, high productioncosts and the lack of bioactivity limit their market penetration. To address this, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was combined with a bacterial pigment with stronganticancer activity, prodigiosin (PG), to obtain functionally enhanced PHBV-based biomaterials. Thesamples were produced in the form of films 115.6–118.8  m in thickness using the solvent castingmethod. The effects of PG incorporation on the physical properties (morphology, biopolymer crystallinityand thermal stability) and functionality of the obtained biomaterials were investigated. PGhas acted as a nucleating agent, in turn affecting the degree of crystallinity, thermal stability andmorphology of the films. All samples with PG had a more organized internal structure and highermelting and degradation temperatures. The calculated degree of crystallinity of the PHBV copolymerwas 53%, while the PG1, PG3 and PG3 films had values of 64.0%, 63.9% and 69.2%, respectively.Cytotoxicity studies have shown the excellent anticancer activity of films against HCT116 (coloncancer) cells, thus advancing PHBV biomedical application potential.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - International Journal of Molecular Sciences
T1  - Advancing PHBV Biomedical Potential with the Incorporation of Bacterial Biopigment Prodigiosin
SP  - 1906
VL  - 24
DO  - 10.3390/ijms24031906
ER  - 

@article{
author = "Ponjavić, Marijana and Malagurski, Ivana and Lazić, Jelena and Jeremić, Sanja and Pavlović, Vladimir and Prlainović, Nevena and Maksimović, Vesna and Ćosović, Vladan and Atanase, Leonard Ionut",
year = "2023",
abstract = "The quest for sustainable biomaterials with excellent biocompatibility and tailorableproperties has put polyhydroxyalkanoates (PHAs) into the research spotlight. However, high productioncosts and the lack of bioactivity limit their market penetration. To address this, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was combined with a bacterial pigment with stronganticancer activity, prodigiosin (PG), to obtain functionally enhanced PHBV-based biomaterials. Thesamples were produced in the form of films 115.6–118.8  m in thickness using the solvent castingmethod. The effects of PG incorporation on the physical properties (morphology, biopolymer crystallinityand thermal stability) and functionality of the obtained biomaterials were investigated. PGhas acted as a nucleating agent, in turn affecting the degree of crystallinity, thermal stability andmorphology of the films. All samples with PG had a more organized internal structure and highermelting and degradation temperatures. The calculated degree of crystallinity of the PHBV copolymerwas 53%, while the PG1, PG3 and PG3 films had values of 64.0%, 63.9% and 69.2%, respectively.Cytotoxicity studies have shown the excellent anticancer activity of films against HCT116 (coloncancer) cells, thus advancing PHBV biomedical application potential.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "International Journal of Molecular Sciences",
title = "Advancing PHBV Biomedical Potential with the Incorporation of Bacterial Biopigment Prodigiosin",
pages = "1906",
volume = "24",
doi = "10.3390/ijms24031906"
}

Ponjavić, M., Malagurski, I., Lazić, J., Jeremić, S., Pavlović, V., Prlainović, N., Maksimović, V., Ćosović, V.,& Atanase, L. I.. (2023). Advancing PHBV Biomedical Potential with the Incorporation of Bacterial Biopigment Prodigiosin. in International Journal of Molecular Sciences
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 24, 1906.
https://doi.org/10.3390/ijms24031906

Ponjavić M, Malagurski I, Lazić J, Jeremić S, Pavlović V, Prlainović N, Maksimović V, Ćosović V, Atanase LI. Advancing PHBV Biomedical Potential with the Incorporation of Bacterial Biopigment Prodigiosin. in International Journal of Molecular Sciences. 2023;24:1906.
doi:10.3390/ijms24031906 .

Ponjavić, Marijana, Malagurski, Ivana, Lazić, Jelena, Jeremić, Sanja, Pavlović, Vladimir, Prlainović, Nevena, Maksimović, Vesna, Ćosović, Vladan, Atanase, Leonard Ionut, "Advancing PHBV Biomedical Potential with the Incorporation of Bacterial Biopigment Prodigiosin" in International Journal of Molecular Sciences, 24 (2023):1906,
https://doi.org/10.3390/ijms24031906 . .

TY  - JOUR
AU  - Pavlović, Miroslav M.
AU  - Pavlović, Miomir
AU  - Ćosović, Vladan
AU  - Bojanić, Vaso
AU  - Nikolić, Nebojša D.
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5778
AB  - Composites based on polymers with conductive fillers have been gaining more significant roles in a variety of technological domains and they are getting in the research focus of numerous studies as a part of growing research trend. Galvanostatically produced copper powder with high values of specific area was used as filler for synthesis of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder. This article is concerned with characterization of these composites. Analysis of the most significant properties of prepared composites and its components included measurements of electrical conductivity, impedance spectroscopy (IS) behavior and structural and morphological analysis. Volume fraction of the copper powder was varied from 2.0-29.8% (v/v). The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold (PT). It was shown that PT depends on both particle shape and type of spatial distribution. IS measurements have shown that particle morphology having pronounced grain boundaries has great effect on appearance of electric conductive layers. The packaging effect and more pronounced interpartical contact with copper powder particles lead to "movement" of PT, which for the particles  LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). IS response of the composites showed existence of electrical conductive layers, each having different resistivity which increases towards interior of the composite.
PB  - Electrochemical Science Group
T2  - International Journal of Electrochemical Science
T1  - Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways
EP  - 8366
IS  - 12
SP  - 8355
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_cer_1415
ER  - 

@article{
author = "Pavlović, Miroslav M. and Pavlović, Miomir and Ćosović, Vladan and Bojanić, Vaso and Nikolić, Nebojša D. and Aleksić, Radoslav",
year = "2014",
abstract = "Composites based on polymers with conductive fillers have been gaining more significant roles in a variety of technological domains and they are getting in the research focus of numerous studies as a part of growing research trend. Galvanostatically produced copper powder with high values of specific area was used as filler for synthesis of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder. This article is concerned with characterization of these composites. Analysis of the most significant properties of prepared composites and its components included measurements of electrical conductivity, impedance spectroscopy (IS) behavior and structural and morphological analysis. Volume fraction of the copper powder was varied from 2.0-29.8% (v/v). The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold (PT). It was shown that PT depends on both particle shape and type of spatial distribution. IS measurements have shown that particle morphology having pronounced grain boundaries has great effect on appearance of electric conductive layers. The packaging effect and more pronounced interpartical contact with copper powder particles lead to "movement" of PT, which for the particles  LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). IS response of the composites showed existence of electrical conductive layers, each having different resistivity which increases towards interior of the composite.",
publisher = "Electrochemical Science Group",
journal = "International Journal of Electrochemical Science",
title = "Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways",
pages = "8366-8355",
number = "12",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_cer_1415"
}

Pavlović, M. M., Pavlović, M., Ćosović, V., Bojanić, V., Nikolić, N. D.,& Aleksić, R.. (2014). Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways. in International Journal of Electrochemical Science
Electrochemical Science Group., 9(12), 8355-8366.
https://hdl.handle.net/21.15107/rcub_cer_1415

Pavlović MM, Pavlović M, Ćosović V, Bojanić V, Nikolić ND, Aleksić R. Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways. in International Journal of Electrochemical Science. 2014;9(12):8355-8366.
https://hdl.handle.net/21.15107/rcub_cer_1415 .

Pavlović, Miroslav M., Pavlović, Miomir, Ćosović, Vladan, Bojanić, Vaso, Nikolić, Nebojša D., Aleksić, Radoslav, "Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways" in International Journal of Electrochemical Science, 9, no. 12 (2014):8355-8366,
https://hdl.handle.net/21.15107/rcub_cer_1415 .

TY  - JOUR
AU  - Pavlović, Miroslav M.
AU  - Ćosović, Vladan
AU  - Pavlović, Miomir
AU  - Bojanić, Vaso
AU  - Nikolić, Nebojša D.
AU  - Aleksić, Radoslav
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5682
AB  - This article is concerned with synthesis and characterization of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder under different pressures, and investigation of the influence of particle size on conductivity and percolation threshold of obtained composites. Electrodeposited copper powder content was varied from 2.0-29.8 vol%. Analysis of the most significant properties of individual components and prepared composites included structural and morphological analysis and measurements of hardness and electrical conductivity. Hardness of the investigated composites, as expected, increased with the increase of the processing pressure, as well as lowering the particle size compared to previous work. The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold. The packaging effect and more pronounced interpartical contact with smaller, highly porous, highly dendritic particles with high values of specific area lead to "movement" of percolation threshold towards lower filler content, which for the particles  LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). In the investigated range of electrodeposited copper powder concentrations and applied pressures the increase of the electrical conductivity of composites is as much as fourteen orders of magnitude. It was found that this transition occurs at lower volume fractions than stated in the literature which can be due to the filler with high specific area.
PB  - Esg, Belgrade
T2  - International Journal of Electrochemical Science
T1  - Electrical Conductivity of Lignocellulose Composites Loaded with Electrodeposited Copper Powders. Part II. Influence of Particle Size on Percolation Threshold
EP  - 8893
IS  - 9
SP  - 8883
VL  - 7
UR  - https://hdl.handle.net/21.15107/rcub_cer_1027
ER  - 

@article{
author = "Pavlović, Miroslav M. and Ćosović, Vladan and Pavlović, Miomir and Bojanić, Vaso and Nikolić, Nebojša D. and Aleksić, Radoslav",
year = "2012",
abstract = "This article is concerned with synthesis and characterization of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder under different pressures, and investigation of the influence of particle size on conductivity and percolation threshold of obtained composites. Electrodeposited copper powder content was varied from 2.0-29.8 vol%. Analysis of the most significant properties of individual components and prepared composites included structural and morphological analysis and measurements of hardness and electrical conductivity. Hardness of the investigated composites, as expected, increased with the increase of the processing pressure, as well as lowering the particle size compared to previous work. The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold. The packaging effect and more pronounced interpartical contact with smaller, highly porous, highly dendritic particles with high values of specific area lead to "movement" of percolation threshold towards lower filler content, which for the particles  LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). In the investigated range of electrodeposited copper powder concentrations and applied pressures the increase of the electrical conductivity of composites is as much as fourteen orders of magnitude. It was found that this transition occurs at lower volume fractions than stated in the literature which can be due to the filler with high specific area.",
publisher = "Esg, Belgrade",
journal = "International Journal of Electrochemical Science",
title = "Electrical Conductivity of Lignocellulose Composites Loaded with Electrodeposited Copper Powders. Part II. Influence of Particle Size on Percolation Threshold",
pages = "8893-8883",
number = "9",
volume = "7",
url = "https://hdl.handle.net/21.15107/rcub_cer_1027"
}

Pavlović, M. M., Ćosović, V., Pavlović, M., Bojanić, V., Nikolić, N. D.,& Aleksić, R.. (2012). Electrical Conductivity of Lignocellulose Composites Loaded with Electrodeposited Copper Powders. Part II. Influence of Particle Size on Percolation Threshold. in International Journal of Electrochemical Science
Esg, Belgrade., 7(9), 8883-8893.
https://hdl.handle.net/21.15107/rcub_cer_1027

Pavlović MM, Ćosović V, Pavlović M, Bojanić V, Nikolić ND, Aleksić R. Electrical Conductivity of Lignocellulose Composites Loaded with Electrodeposited Copper Powders. Part II. Influence of Particle Size on Percolation Threshold. in International Journal of Electrochemical Science. 2012;7(9):8883-8893.
https://hdl.handle.net/21.15107/rcub_cer_1027 .

Pavlović, Miroslav M., Ćosović, Vladan, Pavlović, Miomir, Bojanić, Vaso, Nikolić, Nebojša D., Aleksić, Radoslav, "Electrical Conductivity of Lignocellulose Composites Loaded with Electrodeposited Copper Powders. Part II. Influence of Particle Size on Percolation Threshold" in International Journal of Electrochemical Science, 7, no. 9 (2012):8883-8893,
https://hdl.handle.net/21.15107/rcub_cer_1027 .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Lazić, N. L.
AU  - Talijan, Nadežda M.
AU  - Spasojević, Vojislav
AU  - Stajić-Trošić, Jasna
AU  - Ćosović, Vladan
AU  - Aleksić, Radoslav
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5607
AB  - One of the more important developments in magnetic materials, polymer bonded magnets, have opened a new world of application opportunities. The Nd-Fe-B/polymer composite materials offer an excellent combination of strong magnetic and dynamical-mechanical properties. However, the transition temperatures of filler and matrix should be selected carefully considering the future application. Uniform particle distribution and good adhesion between Nd-Fe-B powder particles and polymer are essential for the quality of the composite, while stiffness of polymer matrix is one of the influencing factors as well. The damping properties of Nd-Fe-B/polymer composites with 15 wt.%, 50 wt.% and 75 wt.% of Nd-Fe-B powder were studied by dynamic mechanical analysis and compared with a pure polymer sample. Thermal stability was analyzed using a simultaneous differential scanning calorimetric and thermogravimetric analysis technique.
PB  - Polish Academy of Sciences
T2  - Acta Physica Polonica A
T1  - Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content
EP  - 863
IS  - 5
SP  - 859
VL  - 117
DO  - 10.12693/APhysPolA.117.859
ER  - 

@article{
author = "Grujić, Aleksandar and Lazić, N. L. and Talijan, Nadežda M. and Spasojević, Vojislav and Stajić-Trošić, Jasna and Ćosović, Vladan and Aleksić, Radoslav",
year = "2010",
abstract = "One of the more important developments in magnetic materials, polymer bonded magnets, have opened a new world of application opportunities. The Nd-Fe-B/polymer composite materials offer an excellent combination of strong magnetic and dynamical-mechanical properties. However, the transition temperatures of filler and matrix should be selected carefully considering the future application. Uniform particle distribution and good adhesion between Nd-Fe-B powder particles and polymer are essential for the quality of the composite, while stiffness of polymer matrix is one of the influencing factors as well. The damping properties of Nd-Fe-B/polymer composites with 15 wt.%, 50 wt.% and 75 wt.% of Nd-Fe-B powder were studied by dynamic mechanical analysis and compared with a pure polymer sample. Thermal stability was analyzed using a simultaneous differential scanning calorimetric and thermogravimetric analysis technique.",
publisher = "Polish Academy of Sciences",
journal = "Acta Physica Polonica A",
title = "Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content",
pages = "863-859",
number = "5",
volume = "117",
doi = "10.12693/APhysPolA.117.859"
}

Grujić, A., Lazić, N. L., Talijan, N. M., Spasojević, V., Stajić-Trošić, J., Ćosović, V.,& Aleksić, R.. (2010). Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content. in Acta Physica Polonica A
Polish Academy of Sciences., 117(5), 859-863.
https://doi.org/10.12693/APhysPolA.117.859

Grujić A, Lazić NL, Talijan NM, Spasojević V, Stajić-Trošić J, Ćosović V, Aleksić R. Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content. in Acta Physica Polonica A. 2010;117(5):859-863.
doi:10.12693/APhysPolA.117.859 .

Grujić, Aleksandar, Lazić, N. L., Talijan, Nadežda M., Spasojević, Vojislav, Stajić-Trošić, Jasna, Ćosović, Vladan, Aleksić, Radoslav, "Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content" in Acta Physica Polonica A, 117, no. 5 (2010):859-863,
https://doi.org/10.12693/APhysPolA.117.859 . .