TY  - JOUR
AU  - Kramar, Ana
AU  - Korica, Matea
AU  - Kostić, Mirjana
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7413
AB  - The electrokinetic properties of materials give useful insight into the behavior of surfaces in contact with liquids and other compounds and their quantification is a powerful tool to predict their behavior during further processing and application, especially in textile materials. In this work, we perform a comparative analysis of influence of the two most common selective oxidative protocols for viscose (regenerated cellulose) fabrics on subsequent functionalization with chitosan, and cellulose fabrics’ electrokinetic properties, zeta potential in a pH range of approx. 3–10, and isoelectric point (IEP). For oxidation before deposition of chitosan, sodium periodate and 2,2,6,6-tetramethylpiperidine-1-oxy radical (TEMPO) were used. The content of functional groups in oxidized cellulose fabric (carboxyl and carbonyl groups) was determined by titration methods, while amino functional groups’ availability in samples with chitosan was determined using the CI acid orange 7 dye absorption method. This study reveals that the periodate oxidation (PO) of cellulose is more effective for binding chitosan onto material, which gave rise to higher availability of amino groups onto cellulose/chitosan material, which also influenced the shift in zeta potential curve towards positive values at a pH below 5. Analysis of a relationship between zeta potential increase at pH 4.4 and amino groups’ amount measured using absorption of CI acid orange 7 dye at pH 4.4 revealed dependency that can be fitted linearly or exponentially, with the latter providing the better fit (R2 = 0.75).
PB  - MDPI
T2  - Textiles
T1  - Comparative Analysis of Electrokinetic Properties of Periodate- and TEMPO-Oxidized Regenerated Cellulose Fabric Functionalized with Chitosan
EP  - 69
IS  - 1
SP  - 57
VL  - 4
DO  - 10.3390/textiles4010005
ER  - 

@article{
author = "Kramar, Ana and Korica, Matea and Kostić, Mirjana",
year = "2024",
abstract = "The electrokinetic properties of materials give useful insight into the behavior of surfaces in contact with liquids and other compounds and their quantification is a powerful tool to predict their behavior during further processing and application, especially in textile materials. In this work, we perform a comparative analysis of influence of the two most common selective oxidative protocols for viscose (regenerated cellulose) fabrics on subsequent functionalization with chitosan, and cellulose fabrics’ electrokinetic properties, zeta potential in a pH range of approx. 3–10, and isoelectric point (IEP). For oxidation before deposition of chitosan, sodium periodate and 2,2,6,6-tetramethylpiperidine-1-oxy radical (TEMPO) were used. The content of functional groups in oxidized cellulose fabric (carboxyl and carbonyl groups) was determined by titration methods, while amino functional groups’ availability in samples with chitosan was determined using the CI acid orange 7 dye absorption method. This study reveals that the periodate oxidation (PO) of cellulose is more effective for binding chitosan onto material, which gave rise to higher availability of amino groups onto cellulose/chitosan material, which also influenced the shift in zeta potential curve towards positive values at a pH below 5. Analysis of a relationship between zeta potential increase at pH 4.4 and amino groups’ amount measured using absorption of CI acid orange 7 dye at pH 4.4 revealed dependency that can be fitted linearly or exponentially, with the latter providing the better fit (R2 = 0.75).",
publisher = "MDPI",
journal = "Textiles",
title = "Comparative Analysis of Electrokinetic Properties of Periodate- and TEMPO-Oxidized Regenerated Cellulose Fabric Functionalized with Chitosan",
pages = "69-57",
number = "1",
volume = "4",
doi = "10.3390/textiles4010005"
}

Kramar, A., Korica, M.,& Kostić, M.. (2024). Comparative Analysis of Electrokinetic Properties of Periodate- and TEMPO-Oxidized Regenerated Cellulose Fabric Functionalized with Chitosan. in Textiles
MDPI., 4(1), 57-69.
https://doi.org/10.3390/textiles4010005

Kramar A, Korica M, Kostić M. Comparative Analysis of Electrokinetic Properties of Periodate- and TEMPO-Oxidized Regenerated Cellulose Fabric Functionalized with Chitosan. in Textiles. 2024;4(1):57-69.
doi:10.3390/textiles4010005 .

Kramar, Ana, Korica, Matea, Kostić, Mirjana, "Comparative Analysis of Electrokinetic Properties of Periodate- and TEMPO-Oxidized Regenerated Cellulose Fabric Functionalized with Chitosan" in Textiles, 4, no. 1 (2024):57-69,
https://doi.org/10.3390/textiles4010005 . .

TY  - JOUR
AU  - Knezević, Marina
AU  - Kramar, Ana
AU  - Hajnrih, Teodora
AU  - Korica, Matea
AU  - Nikolić, Tanja
AU  - Žekić, Andrijana
AU  - Kostić, Mirjana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/18
AB  - Cotton yarn was oxidized using the various concentrations and pH of potassium permanganate solutions, in order to investigate the influence of oxidation parameters on chemical, mechanical and sorption properties of cotton. The oxidation progress was monitored through weight loss, carbonyl and carboxyl group content, tensile strength, moisture sorption, crystallinity change, surface charge and morphology of modified samples. The carboxyl groups were introduced into the oxidized cotton up to 0.3 mmol center dot g(-1), while the weight loss was up to 5%. The oxidized samples, compared with untreated cotton, exhibited lower tensile strength, higher moisture sorption and surface roughness. Surface charge was evaluated through measurement of zeta potential at different pH of electrolyte, and the correlation was established between carboxyl group content and zeta values measured at neutral pH, which proved that zeta potential can be a valuable tool for characterizing changes in the structure of oxidized cellulose textile materials.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Journal of Natural Fibers
T1  - Influence of Potassium Permanganate Oxidation on Structure and Properties of Cotton
EP  - 415
IS  - 2
SP  - 403
VL  - 19
DO  - 10.1080/15440478.2020.1745120
ER  - 

@article{
author = "Knezević, Marina and Kramar, Ana and Hajnrih, Teodora and Korica, Matea and Nikolić, Tanja and Žekić, Andrijana and Kostić, Mirjana",
year = "2022",
abstract = "Cotton yarn was oxidized using the various concentrations and pH of potassium permanganate solutions, in order to investigate the influence of oxidation parameters on chemical, mechanical and sorption properties of cotton. The oxidation progress was monitored through weight loss, carbonyl and carboxyl group content, tensile strength, moisture sorption, crystallinity change, surface charge and morphology of modified samples. The carboxyl groups were introduced into the oxidized cotton up to 0.3 mmol center dot g(-1), while the weight loss was up to 5%. The oxidized samples, compared with untreated cotton, exhibited lower tensile strength, higher moisture sorption and surface roughness. Surface charge was evaluated through measurement of zeta potential at different pH of electrolyte, and the correlation was established between carboxyl group content and zeta values measured at neutral pH, which proved that zeta potential can be a valuable tool for characterizing changes in the structure of oxidized cellulose textile materials.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Journal of Natural Fibers",
title = "Influence of Potassium Permanganate Oxidation on Structure and Properties of Cotton",
pages = "415-403",
number = "2",
volume = "19",
doi = "10.1080/15440478.2020.1745120"
}

Knezević, M., Kramar, A., Hajnrih, T., Korica, M., Nikolić, T., Žekić, A.,& Kostić, M.. (2022). Influence of Potassium Permanganate Oxidation on Structure and Properties of Cotton. in Journal of Natural Fibers
Taylor & Francis Inc, Philadelphia., 19(2), 403-415.
https://doi.org/10.1080/15440478.2020.1745120

Knezević M, Kramar A, Hajnrih T, Korica M, Nikolić T, Žekić A, Kostić M. Influence of Potassium Permanganate Oxidation on Structure and Properties of Cotton. in Journal of Natural Fibers. 2022;19(2):403-415.
doi:10.1080/15440478.2020.1745120 .

Knezević, Marina, Kramar, Ana, Hajnrih, Teodora, Korica, Matea, Nikolić, Tanja, Žekić, Andrijana, Kostić, Mirjana, "Influence of Potassium Permanganate Oxidation on Structure and Properties of Cotton" in Journal of Natural Fibers, 19, no. 2 (2022):403-415,
https://doi.org/10.1080/15440478.2020.1745120 . .

TY  - JOUR
AU  - Korica, Matea D.
AU  - Kramar, Ana
AU  - Peršin Fratnik, Zdenka
AU  - Obradović, Bratislav
AU  - Kuraica, Milorad M.
AU  - Dojčinović, Biljana
AU  - Fras Zemljič, Lidija
AU  - Kostić, Mirjana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5232
AB  - This study aimed to obtain functional viscose textiles based on chitosan coatings with improved antibacterial properties and washing durability. For that reason, before functionalization with chitosan/zinc nanoparticles (NCH+Zn), the viscose fabric was modified by nonthermal gas plasma of dielectric barrier discharge (DBD) to introduce into its structure functional groups suitable for attachment of NCH+Zn. NCH+Zn were characterized by measurements of hydrodynamic diameter and zeta potential and AFM. DBD-plasma-modified and NCH+Zn-functionalized fabrics were characterized by zeta potential measurements, ATR-FTIR spectroscopy, the calcium acetate method (determination of content of carboxyl and aldehyde groups), SEM, breaking-strength measurements, elemental analysis, and ICP-OES. Their antibacterial activity was determined under dynamic contact conditions. In addition to SEM, the NCH+Zn distributions on viscose fabrics were also indirectly characterized by measuring their absorbent capacities before and after functionalization with NCH+Zn. Washing durability was monitored through changes in the zeta potential, chitosan and zinc content, and antibacterial activity after 1, 3, and 5 washing cycles. The obtained results showed that DBD plasma modification contributed to the simultaneous improvement of NCH+Zn sorption and antibacterial properties of the viscose fabric functionalized with NCH+Zn, and its washing durability, making it suitable for the production of high-value-added medical textiles.
PB  - MDPI
T2  - Polymers
T1  - Obtaining Medical Textiles Based on Viscose and Chitosan/Zinc Nanoparticles with Improved Antibacterial Properties by Using a Dielectric Barrier Discharge
IS  - 19
SP  - 4152
VL  - 14
DO  - 10.3390/polym14194152
ER  - 

@article{
author = "Korica, Matea D. and Kramar, Ana and Peršin Fratnik, Zdenka and Obradović, Bratislav and Kuraica, Milorad M. and Dojčinović, Biljana and Fras Zemljič, Lidija and Kostić, Mirjana",
year = "2022",
abstract = "This study aimed to obtain functional viscose textiles based on chitosan coatings with improved antibacterial properties and washing durability. For that reason, before functionalization with chitosan/zinc nanoparticles (NCH+Zn), the viscose fabric was modified by nonthermal gas plasma of dielectric barrier discharge (DBD) to introduce into its structure functional groups suitable for attachment of NCH+Zn. NCH+Zn were characterized by measurements of hydrodynamic diameter and zeta potential and AFM. DBD-plasma-modified and NCH+Zn-functionalized fabrics were characterized by zeta potential measurements, ATR-FTIR spectroscopy, the calcium acetate method (determination of content of carboxyl and aldehyde groups), SEM, breaking-strength measurements, elemental analysis, and ICP-OES. Their antibacterial activity was determined under dynamic contact conditions. In addition to SEM, the NCH+Zn distributions on viscose fabrics were also indirectly characterized by measuring their absorbent capacities before and after functionalization with NCH+Zn. Washing durability was monitored through changes in the zeta potential, chitosan and zinc content, and antibacterial activity after 1, 3, and 5 washing cycles. The obtained results showed that DBD plasma modification contributed to the simultaneous improvement of NCH+Zn sorption and antibacterial properties of the viscose fabric functionalized with NCH+Zn, and its washing durability, making it suitable for the production of high-value-added medical textiles.",
publisher = "MDPI",
journal = "Polymers",
title = "Obtaining Medical Textiles Based on Viscose and Chitosan/Zinc Nanoparticles with Improved Antibacterial Properties by Using a Dielectric Barrier Discharge",
number = "19",
pages = "4152",
volume = "14",
doi = "10.3390/polym14194152"
}

Korica, M. D., Kramar, A., Peršin Fratnik, Z., Obradović, B., Kuraica, M. M., Dojčinović, B., Fras Zemljič, L.,& Kostić, M.. (2022). Obtaining Medical Textiles Based on Viscose and Chitosan/Zinc Nanoparticles with Improved Antibacterial Properties by Using a Dielectric Barrier Discharge. in Polymers
MDPI., 14(19), 4152.
https://doi.org/10.3390/polym14194152

Korica MD, Kramar A, Peršin Fratnik Z, Obradović B, Kuraica MM, Dojčinović B, Fras Zemljič L, Kostić M. Obtaining Medical Textiles Based on Viscose and Chitosan/Zinc Nanoparticles with Improved Antibacterial Properties by Using a Dielectric Barrier Discharge. in Polymers. 2022;14(19):4152.
doi:10.3390/polym14194152 .

Korica, Matea D., Kramar, Ana, Peršin Fratnik, Zdenka, Obradović, Bratislav, Kuraica, Milorad M., Dojčinović, Biljana, Fras Zemljič, Lidija, Kostić, Mirjana, "Obtaining Medical Textiles Based on Viscose and Chitosan/Zinc Nanoparticles with Improved Antibacterial Properties by Using a Dielectric Barrier Discharge" in Polymers, 14, no. 19 (2022):4152,
https://doi.org/10.3390/polym14194152 . .

TY  - JOUR
AU  - Kramar, Ana
AU  - Obradović, Bratislav M.
AU  - Schiehser, Sonja
AU  - Potthast, Antje
AU  - Kuraica, Milorad M.
AU  - Kostić, Mirjana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5005
AB  - In this work, plasma pretreatment of raw cotton fibers combined with silver sorption was used for the preparation of antimicrobial fabrics. Special attention was given to the aging effect investigated seven days after plasma treatment. Raw cotton fabrics were modified with atmospheric pressure dielectric barrier discharge (DBD) in air, nitrogen, and oxygen. After plasma treatment, surface morphology and chemistry were characterized by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS), respectively, molecular weight distribution and functional groups profile in cellulose were determined by GPC-MALLS with fluorescence labeling, while sorption properties were evaluated through wettability and moisture sorption measurements. Silver sorption was performed either immediately after treatment or seven days after plasma treatment, in order to investigate the aging effect on the sorption of Ag+. Antimicrobial activity was tested using agar diffusion test against S. aureus, E.coli, and C. albicans. Results have shown that silver sorption is improved and significantly higher when sorption is performed seven days after plasma treatment and consequently antimicrobial activity is also enhanced. This work confirms the significance of plasma aging in natural cellulose fibers' functionalization which presents yet another variable that should be taken into account when planning the procedure for fibers functionalization.
T2  - Journal of Natural Fibers
T1  - Enhanced Antimicrobial Activity of Atmospheric Pressure Plasma Treated and Aged Cotton Fibers
EP  - 7405
IS  - 14
SP  - 7391
VL  - 19
DO  - 10.1080/15440478.2021.1946883
ER  - 

@article{
author = "Kramar, Ana and Obradović, Bratislav M. and Schiehser, Sonja and Potthast, Antje and Kuraica, Milorad M. and Kostić, Mirjana",
year = "2022",
abstract = "In this work, plasma pretreatment of raw cotton fibers combined with silver sorption was used for the preparation of antimicrobial fabrics. Special attention was given to the aging effect investigated seven days after plasma treatment. Raw cotton fabrics were modified with atmospheric pressure dielectric barrier discharge (DBD) in air, nitrogen, and oxygen. After plasma treatment, surface morphology and chemistry were characterized by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS), respectively, molecular weight distribution and functional groups profile in cellulose were determined by GPC-MALLS with fluorescence labeling, while sorption properties were evaluated through wettability and moisture sorption measurements. Silver sorption was performed either immediately after treatment or seven days after plasma treatment, in order to investigate the aging effect on the sorption of Ag+. Antimicrobial activity was tested using agar diffusion test against S. aureus, E.coli, and C. albicans. Results have shown that silver sorption is improved and significantly higher when sorption is performed seven days after plasma treatment and consequently antimicrobial activity is also enhanced. This work confirms the significance of plasma aging in natural cellulose fibers' functionalization which presents yet another variable that should be taken into account when planning the procedure for fibers functionalization.",
journal = "Journal of Natural Fibers",
title = "Enhanced Antimicrobial Activity of Atmospheric Pressure Plasma Treated and Aged Cotton Fibers",
pages = "7405-7391",
number = "14",
volume = "19",
doi = "10.1080/15440478.2021.1946883"
}

Kramar, A., Obradović, B. M., Schiehser, S., Potthast, A., Kuraica, M. M.,& Kostić, M.. (2022). Enhanced Antimicrobial Activity of Atmospheric Pressure Plasma Treated and Aged Cotton Fibers. in Journal of Natural Fibers, 19(14), 7391-7405.
https://doi.org/10.1080/15440478.2021.1946883

Kramar A, Obradović BM, Schiehser S, Potthast A, Kuraica MM, Kostić M. Enhanced Antimicrobial Activity of Atmospheric Pressure Plasma Treated and Aged Cotton Fibers. in Journal of Natural Fibers. 2022;19(14):7391-7405.
doi:10.1080/15440478.2021.1946883 .

Kramar, Ana, Obradović, Bratislav M., Schiehser, Sonja, Potthast, Antje, Kuraica, Milorad M., Kostić, Mirjana, "Enhanced Antimicrobial Activity of Atmospheric Pressure Plasma Treated and Aged Cotton Fibers" in Journal of Natural Fibers, 19, no. 14 (2022):7391-7405,
https://doi.org/10.1080/15440478.2021.1946883 . .

TY  - CONF
AU  - Kramar, Ana
AU  - Ilić-Tomić, Tatjana
AU  - Lađarević, Jelena
AU  - Nikodinović-Runić, Jasmina
AU  - Kostić, Mirjana
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6755
AB  - In this work, cellulose (viscose) was functionalized with chitosan and dyed with an extract of Streptomyces sp. NP4 bacterial culture. Cellulose was first converted to dialdehyde cellulose; afterward chitosan was deposited, making fabric susceptible to dyeing. The dyed fabric exhibited pH responsiveness in a broad range of pH, 4-7-10, where colour shade of the fabric, exposed to buffer solutions, was pink, red, and blue, respectively. Response to the pH change was measured in seconds, whereby faster colour shift is from blue to red/pink. The dyed fabrics can withstand 10 cycles of colour change. Due to the broad range of pH activity, the presented cellulose product has the potential to be used as a textile pH sensor, and, more importantly, it is completely made from natural and sustainable resources.
PB  - Sciencentris
C3  - Book of Abstracts / 5th International International Conference on Natural Fibers - Materials of the Future, ICNF2021, 17–19. maj 2021., Portugal
T1  - Functional pH-sensitive cellulose fabric dyed with bacterial extract from Streptomyces sp.
EP  - 29
SP  - 28
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6755
ER  - 

@conference{
author = "Kramar, Ana and Ilić-Tomić, Tatjana and Lađarević, Jelena and Nikodinović-Runić, Jasmina and Kostić, Mirjana",
year = "2021",
abstract = "In this work, cellulose (viscose) was functionalized with chitosan and dyed with an extract of Streptomyces sp. NP4 bacterial culture. Cellulose was first converted to dialdehyde cellulose; afterward chitosan was deposited, making fabric susceptible to dyeing. The dyed fabric exhibited pH responsiveness in a broad range of pH, 4-7-10, where colour shade of the fabric, exposed to buffer solutions, was pink, red, and blue, respectively. Response to the pH change was measured in seconds, whereby faster colour shift is from blue to red/pink. The dyed fabrics can withstand 10 cycles of colour change. Due to the broad range of pH activity, the presented cellulose product has the potential to be used as a textile pH sensor, and, more importantly, it is completely made from natural and sustainable resources.",
publisher = "Sciencentris",
journal = "Book of Abstracts / 5th International International Conference on Natural Fibers - Materials of the Future, ICNF2021, 17–19. maj 2021., Portugal",
title = "Functional pH-sensitive cellulose fabric dyed with bacterial extract from Streptomyces sp.",
pages = "29-28",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6755"
}

Kramar, A., Ilić-Tomić, T., Lađarević, J., Nikodinović-Runić, J.,& Kostić, M.. (2021). Functional pH-sensitive cellulose fabric dyed with bacterial extract from Streptomyces sp.. in Book of Abstracts / 5th International International Conference on Natural Fibers - Materials of the Future, ICNF2021, 17–19. maj 2021., Portugal
Sciencentris., 28-29.
https://hdl.handle.net/21.15107/rcub_technorep_6755

Kramar A, Ilić-Tomić T, Lađarević J, Nikodinović-Runić J, Kostić M. Functional pH-sensitive cellulose fabric dyed with bacterial extract from Streptomyces sp.. in Book of Abstracts / 5th International International Conference on Natural Fibers - Materials of the Future, ICNF2021, 17–19. maj 2021., Portugal. 2021;:28-29.
https://hdl.handle.net/21.15107/rcub_technorep_6755 .

Kramar, Ana, Ilić-Tomić, Tatjana, Lađarević, Jelena, Nikodinović-Runić, Jasmina, Kostić, Mirjana, "Functional pH-sensitive cellulose fabric dyed with bacterial extract from Streptomyces sp." in Book of Abstracts / 5th International International Conference on Natural Fibers - Materials of the Future, ICNF2021, 17–19. maj 2021., Portugal (2021):28-29,
https://hdl.handle.net/21.15107/rcub_technorep_6755 .

TY  - JOUR
AU  - Korica, Matea
AU  - Kramar, Ana
AU  - Peršin, Zdenka
AU  - Obradović, Bratislav
AU  - Kuraica, Milorad
AU  - Fras Zemljič, Lidija
AU  - Kostić, Mirjana
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6520
AB  - This study aimed to obtain textile based on viscose and chitosan with simultaneously improved sorption and antibacterial properties. For that reason, before functionalization with chitosan, the viscose fabric was modified by nonthermal gas plasma of dielectric barrier discharge (DBD) to introduce into its structure functional groups suitable for improved adsorption of chitosan. Functional groups' content of unmodified and DBD modified viscose fabric was determined by the calcium acetate method, while their influence on the surface charge, as well as the success of the functionalization of viscose fabrics with chitosan, was evaluated by measuring the zeta potential. Morphological, sorption and antibacterial properties of unmodified and DBD modified viscose fabrics, before and after functionalization with chitosan, were characterized by scanning electron microscopy, capillary rise method, and standard test method ASTME 2149-01: 2001, respectively. The obtained results showed that the treatment with DBD contributed to the simultaneous improvement of sorption and antibacterial properties of viscose fabric functionalized with chitosan, making it suitable for the production of high value-added medical textiles.
PB  - Union of Textile Engineers and Technicians of Serbia, Belgrade
T2  - Tekstilna industrija
T1  - Obtaining of medical textiles based on viscose and chitosan with simultaneously improved sorption and antibacterial properties by using dielectric barrier discharge
EP  - 53
IS  - 4
SP  - 46
VL  - 69
DO  - 10.5937/tekstind2104046K
ER  - 

@article{
author = "Korica, Matea and Kramar, Ana and Peršin, Zdenka and Obradović, Bratislav and Kuraica, Milorad and Fras Zemljič, Lidija and Kostić, Mirjana",
year = "2021",
abstract = "This study aimed to obtain textile based on viscose and chitosan with simultaneously improved sorption and antibacterial properties. For that reason, before functionalization with chitosan, the viscose fabric was modified by nonthermal gas plasma of dielectric barrier discharge (DBD) to introduce into its structure functional groups suitable for improved adsorption of chitosan. Functional groups' content of unmodified and DBD modified viscose fabric was determined by the calcium acetate method, while their influence on the surface charge, as well as the success of the functionalization of viscose fabrics with chitosan, was evaluated by measuring the zeta potential. Morphological, sorption and antibacterial properties of unmodified and DBD modified viscose fabrics, before and after functionalization with chitosan, were characterized by scanning electron microscopy, capillary rise method, and standard test method ASTME 2149-01: 2001, respectively. The obtained results showed that the treatment with DBD contributed to the simultaneous improvement of sorption and antibacterial properties of viscose fabric functionalized with chitosan, making it suitable for the production of high value-added medical textiles.",
publisher = "Union of Textile Engineers and Technicians of Serbia, Belgrade",
journal = "Tekstilna industrija",
title = "Obtaining of medical textiles based on viscose and chitosan with simultaneously improved sorption and antibacterial properties by using dielectric barrier discharge",
pages = "53-46",
number = "4",
volume = "69",
doi = "10.5937/tekstind2104046K"
}

Korica, M., Kramar, A., Peršin, Z., Obradović, B., Kuraica, M., Fras Zemljič, L.,& Kostić, M.. (2021). Obtaining of medical textiles based on viscose and chitosan with simultaneously improved sorption and antibacterial properties by using dielectric barrier discharge. in Tekstilna industrija
Union of Textile Engineers and Technicians of Serbia, Belgrade., 69(4), 46-53.
https://doi.org/10.5937/tekstind2104046K

Korica M, Kramar A, Peršin Z, Obradović B, Kuraica M, Fras Zemljič L, Kostić M. Obtaining of medical textiles based on viscose and chitosan with simultaneously improved sorption and antibacterial properties by using dielectric barrier discharge. in Tekstilna industrija. 2021;69(4):46-53.
doi:10.5937/tekstind2104046K .

Korica, Matea, Kramar, Ana, Peršin, Zdenka, Obradović, Bratislav, Kuraica, Milorad, Fras Zemljič, Lidija, Kostić, Mirjana, "Obtaining of medical textiles based on viscose and chitosan with simultaneously improved sorption and antibacterial properties by using dielectric barrier discharge" in Tekstilna industrija, 69, no. 4 (2021):46-53,
https://doi.org/10.5937/tekstind2104046K . .

TY  - JOUR
AU  - Dimic-Misic, Katarina
AU  - Kostić, Mirjana
AU  - Obradovic, Bratislav
AU  - Kuraica, Milorad
AU  - Kramar, Ana
AU  - Imani, Monireh
AU  - Gane, Patrick
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4844
AB  - The surface of cellulose films, obtained from micro nanofibrillated cellulose produced with different enzymatic pretreatment digestion times of refined pulp, was exposed to gas plasma, resulting in a range of surface chemical and morphological changes affecting the mechanical and surface interactional properties. The action of separate and dual exposure to oxygen and nitrogen cold dielectric barrier discharge plasma was studied with respect to the generation of roughness (confocal laser and atomic force microscopy), nanostructural and chemical changes on the cellulose film surface, and their combined effect on wettability. Elemental analysis showed that with longer enzymatic pretreatment time the wetting response was sensitive to the chemical and morphological changes induced by both plasma gases, but distinctly oxygen plasma was seen to induce much greater morphological change while nitrogen plasma contributed more to chemical modification of the film surface. In this novel study, it is shown that exposure to oxygen plasma, subsequently followed by exposure to nitrogen plasma, leads first to an increase in wetting, and second to more hydrophobic behaviour, thus improving, for example, suitability for printing using polar functional inks or providing film barrier properties, respectively.
T2  - Materials
T1  - Iso- and Anisotropic Etching of Micro Nanofibrillated Cellulose Films by Sequential Oxygen and Nitrogen Gas Plasma Exposure for Tunable Wettability on Crystalline and Amorphous Regions
IS  - 13
VL  - 14
DO  - 10.3390/ma14133571
ER  - 

@article{
author = "Dimic-Misic, Katarina and Kostić, Mirjana and Obradovic, Bratislav and Kuraica, Milorad and Kramar, Ana and Imani, Monireh and Gane, Patrick",
year = "2021",
abstract = "The surface of cellulose films, obtained from micro nanofibrillated cellulose produced with different enzymatic pretreatment digestion times of refined pulp, was exposed to gas plasma, resulting in a range of surface chemical and morphological changes affecting the mechanical and surface interactional properties. The action of separate and dual exposure to oxygen and nitrogen cold dielectric barrier discharge plasma was studied with respect to the generation of roughness (confocal laser and atomic force microscopy), nanostructural and chemical changes on the cellulose film surface, and their combined effect on wettability. Elemental analysis showed that with longer enzymatic pretreatment time the wetting response was sensitive to the chemical and morphological changes induced by both plasma gases, but distinctly oxygen plasma was seen to induce much greater morphological change while nitrogen plasma contributed more to chemical modification of the film surface. In this novel study, it is shown that exposure to oxygen plasma, subsequently followed by exposure to nitrogen plasma, leads first to an increase in wetting, and second to more hydrophobic behaviour, thus improving, for example, suitability for printing using polar functional inks or providing film barrier properties, respectively.",
journal = "Materials",
title = "Iso- and Anisotropic Etching of Micro Nanofibrillated Cellulose Films by Sequential Oxygen and Nitrogen Gas Plasma Exposure for Tunable Wettability on Crystalline and Amorphous Regions",
number = "13",
volume = "14",
doi = "10.3390/ma14133571"
}

Dimic-Misic, K., Kostić, M., Obradovic, B., Kuraica, M., Kramar, A., Imani, M.,& Gane, P.. (2021). Iso- and Anisotropic Etching of Micro Nanofibrillated Cellulose Films by Sequential Oxygen and Nitrogen Gas Plasma Exposure for Tunable Wettability on Crystalline and Amorphous Regions. in Materials, 14(13).
https://doi.org/10.3390/ma14133571

Dimic-Misic K, Kostić M, Obradovic B, Kuraica M, Kramar A, Imani M, Gane P. Iso- and Anisotropic Etching of Micro Nanofibrillated Cellulose Films by Sequential Oxygen and Nitrogen Gas Plasma Exposure for Tunable Wettability on Crystalline and Amorphous Regions. in Materials. 2021;14(13).
doi:10.3390/ma14133571 .

Dimic-Misic, Katarina, Kostić, Mirjana, Obradovic, Bratislav, Kuraica, Milorad, Kramar, Ana, Imani, Monireh, Gane, Patrick, "Iso- and Anisotropic Etching of Micro Nanofibrillated Cellulose Films by Sequential Oxygen and Nitrogen Gas Plasma Exposure for Tunable Wettability on Crystalline and Amorphous Regions" in Materials, 14, no. 13 (2021),
https://doi.org/10.3390/ma14133571 . .

TY  - JOUR
AU  - Kramar, Ana
AU  - Ilic-Tomic, Tatjana R.
AU  - Lađarević, Jelena
AU  - Nikodinović-Runić, Jasmina
AU  - Kostić, Mirjana
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4867
AB  - Halochromic (pH-responsive) material was obtained by dyeing functionalized viscose fabric with a crude extract from Streptomyces sp. strain NP4. The functionalization of the fabric before dyeing was performed to make cellulose susceptible to coloration with NP4 extract. Two combined pre-treatment steps were used, oxidation to obtain dialdehyde cellulose and chitosan deposition after oxidation. Chitosan was deposited onto untreated fabric as well, while only oxidized viscose was also investigated for dyeing. Functionalization by both protocols made viscose susceptible to dyeing with the notion that the deposition of chitosan onto oxidized viscose produced the darkest shade on the material. Dyed fabrics showed visual pH responsiveness in the range pH 4-10, with a color change from pink to red (pH 4-pH 7) and a major color change from red to blue (pH 7-pH 10) whereby fabric was tested and could withstand 10 color-changing cycles. Cytotoxicity assay confirmed the non-toxic nature of dyed material, which indicates its possible use as wound dressing's indicators.
T2  - Cellulose
T1  - Halochromic cellulose textile obtained via dyeing with biocolorant isolated from Streptomyces sp. strain NP4
EP  - 8784
IS  - 13
SP  - 8771
VL  - 28
DO  - 10.1007/s10570-021-04071-7
ER  - 

@article{
author = "Kramar, Ana and Ilic-Tomic, Tatjana R. and Lađarević, Jelena and Nikodinović-Runić, Jasmina and Kostić, Mirjana",
year = "2021",
abstract = "Halochromic (pH-responsive) material was obtained by dyeing functionalized viscose fabric with a crude extract from Streptomyces sp. strain NP4. The functionalization of the fabric before dyeing was performed to make cellulose susceptible to coloration with NP4 extract. Two combined pre-treatment steps were used, oxidation to obtain dialdehyde cellulose and chitosan deposition after oxidation. Chitosan was deposited onto untreated fabric as well, while only oxidized viscose was also investigated for dyeing. Functionalization by both protocols made viscose susceptible to dyeing with the notion that the deposition of chitosan onto oxidized viscose produced the darkest shade on the material. Dyed fabrics showed visual pH responsiveness in the range pH 4-10, with a color change from pink to red (pH 4-pH 7) and a major color change from red to blue (pH 7-pH 10) whereby fabric was tested and could withstand 10 color-changing cycles. Cytotoxicity assay confirmed the non-toxic nature of dyed material, which indicates its possible use as wound dressing's indicators.",
journal = "Cellulose",
title = "Halochromic cellulose textile obtained via dyeing with biocolorant isolated from Streptomyces sp. strain NP4",
pages = "8784-8771",
number = "13",
volume = "28",
doi = "10.1007/s10570-021-04071-7"
}

Kramar, A., Ilic-Tomic, T. R., Lađarević, J., Nikodinović-Runić, J.,& Kostić, M.. (2021). Halochromic cellulose textile obtained via dyeing with biocolorant isolated from Streptomyces sp. strain NP4. in Cellulose, 28(13), 8771-8784.
https://doi.org/10.1007/s10570-021-04071-7

Kramar A, Ilic-Tomic TR, Lađarević J, Nikodinović-Runić J, Kostić M. Halochromic cellulose textile obtained via dyeing with biocolorant isolated from Streptomyces sp. strain NP4. in Cellulose. 2021;28(13):8771-8784.
doi:10.1007/s10570-021-04071-7 .

Kramar, Ana, Ilic-Tomic, Tatjana R., Lađarević, Jelena, Nikodinović-Runić, Jasmina, Kostić, Mirjana, "Halochromic cellulose textile obtained via dyeing with biocolorant isolated from Streptomyces sp. strain NP4" in Cellulose, 28, no. 13 (2021):8771-8784,
https://doi.org/10.1007/s10570-021-04071-7 . .

TY  - JOUR
AU  - Kramar, Ana
AU  - Petrovic, Marija
AU  - Mihajlovski, Katarina
AU  - Mandic, Boris
AU  - Vukovic, Gorica
AU  - Blagojevic, Stevan
AU  - Kostić, Mirjana
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4876
AB  - Six ethanolic extracts, obtained from anise, fennel, lavender, sage, mint, white horehound and their mixture were directly applied onto cellulose (viscose) fabric to impart antimicrobial and antioxidant functionality for its potential use as a wound dressing. Antimicrobial activity of treated fabrics against gram-positive bacteria S. aureus and yeast C. albicans, as common skin pathogens, was determined by agar diffusion test. The most effective against both microorganisms was viscose with anise, fennel, and mint, whereby clear inhibition and suppression zones were detected. The oxidation of viscose, intended to improve sorption properties and consequently adsorption of extracts, increased the antimicrobial activity of viscose with a mixture of extracts. The antioxidant activity of fabric samples with extracts, determined by 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay, was significantly higher when compared to the untreated viscose sample (2.38 %) and ranged from 11.82 % for viscose with fennel up to 87.71 % for viscose with sage. Oxidation of fabric before sorption of extracts mixture contributes to higher antioxidant activity (68.81 %). Direct impregnation of bioactive plants extracts onto the fabric represents low cost and simple method, which makes it suitable for obtaining eco-friendly, low-cost disposable medical textiles with the therapeutic and prophylactic role.
T2  - Fibers and Polymers
T1  - Selected Aromatic Plants Extracts as an Antimicrobial and Antioxidant Finish for Cellulose Fabric- Direct Impregnation Method
EP  - 3325
IS  - 12
SP  - 3317
VL  - 22
DO  - 10.1007/s12221-021-3007-1
ER  - 

@article{
author = "Kramar, Ana and Petrovic, Marija and Mihajlovski, Katarina and Mandic, Boris and Vukovic, Gorica and Blagojevic, Stevan and Kostić, Mirjana",
year = "2021",
abstract = "Six ethanolic extracts, obtained from anise, fennel, lavender, sage, mint, white horehound and their mixture were directly applied onto cellulose (viscose) fabric to impart antimicrobial and antioxidant functionality for its potential use as a wound dressing. Antimicrobial activity of treated fabrics against gram-positive bacteria S. aureus and yeast C. albicans, as common skin pathogens, was determined by agar diffusion test. The most effective against both microorganisms was viscose with anise, fennel, and mint, whereby clear inhibition and suppression zones were detected. The oxidation of viscose, intended to improve sorption properties and consequently adsorption of extracts, increased the antimicrobial activity of viscose with a mixture of extracts. The antioxidant activity of fabric samples with extracts, determined by 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay, was significantly higher when compared to the untreated viscose sample (2.38 %) and ranged from 11.82 % for viscose with fennel up to 87.71 % for viscose with sage. Oxidation of fabric before sorption of extracts mixture contributes to higher antioxidant activity (68.81 %). Direct impregnation of bioactive plants extracts onto the fabric represents low cost and simple method, which makes it suitable for obtaining eco-friendly, low-cost disposable medical textiles with the therapeutic and prophylactic role.",
journal = "Fibers and Polymers",
title = "Selected Aromatic Plants Extracts as an Antimicrobial and Antioxidant Finish for Cellulose Fabric- Direct Impregnation Method",
pages = "3325-3317",
number = "12",
volume = "22",
doi = "10.1007/s12221-021-3007-1"
}

Kramar, A., Petrovic, M., Mihajlovski, K., Mandic, B., Vukovic, G., Blagojevic, S.,& Kostić, M.. (2021). Selected Aromatic Plants Extracts as an Antimicrobial and Antioxidant Finish for Cellulose Fabric- Direct Impregnation Method. in Fibers and Polymers, 22(12), 3317-3325.
https://doi.org/10.1007/s12221-021-3007-1

Kramar A, Petrovic M, Mihajlovski K, Mandic B, Vukovic G, Blagojevic S, Kostić M. Selected Aromatic Plants Extracts as an Antimicrobial and Antioxidant Finish for Cellulose Fabric- Direct Impregnation Method. in Fibers and Polymers. 2021;22(12):3317-3325.
doi:10.1007/s12221-021-3007-1 .

Kramar, Ana, Petrovic, Marija, Mihajlovski, Katarina, Mandic, Boris, Vukovic, Gorica, Blagojevic, Stevan, Kostić, Mirjana, "Selected Aromatic Plants Extracts as an Antimicrobial and Antioxidant Finish for Cellulose Fabric- Direct Impregnation Method" in Fibers and Polymers, 22, no. 12 (2021):3317-3325,
https://doi.org/10.1007/s12221-021-3007-1 . .

TY  - JOUR
AU  - Kramar, Ana
AU  - Ivanovska, Aleksandra
AU  - Kostić, Mirjana
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4936
AB  - Successful conversion of cellulose hydroxyl (OH) to carboxyl (COOH) groups is the goal of many modification procedures since COOH groups enhance the polarity of the fibers' surface and can be used for further fibers' functionalization. In this work, in order to obtain 2,3-dicarboxycellulose, the regenerated cellulose fibers (viscose) in the form of fabric were functionalized through two-step oxidation: with NaIO4 to introduce CHO groups followed by NaClO2 for CHO conversion to COOH groups. After oxidations, the fibers' morphology, surface chemistry, crystallinity, and surface charge were investigated using scanning electron microscopy (SEM), Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction analysis (XRD), and zeta potential measurements, respectively, as well as content of COOH groups determined by volumetric titrations. Sorption properties, i.e. moisture sorption, water retention power, and sorption of silver ions (Ag+) were evaluated and correlated with oxidation parameters. The interaction with model ion - Ag+ revealed that COOH groups, when maximum content obtained in oxidized fibers was 0.27 mmol center dot g(-1), were available for binding Ag+ in nearly 1:1 ratio. The proposed oxidative protocol represents an effective method for COOH groups' introduction into regenerated cellulose fibers, improvement of fibers' sorption properties without deterioration of their crystallinity, and opens up a possibility for further functionalization of 2,3-dicarboxycellulose.
PB  - Korean Fiber Society
T2  - Fibers and Polymers
T1  - Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties
EP  - 2186
IS  - 8
SP  - 2177
VL  - 22
DO  - 10.1007/s12221-021-0996-8
ER  - 

@article{
author = "Kramar, Ana and Ivanovska, Aleksandra and Kostić, Mirjana",
year = "2021",
abstract = "Successful conversion of cellulose hydroxyl (OH) to carboxyl (COOH) groups is the goal of many modification procedures since COOH groups enhance the polarity of the fibers' surface and can be used for further fibers' functionalization. In this work, in order to obtain 2,3-dicarboxycellulose, the regenerated cellulose fibers (viscose) in the form of fabric were functionalized through two-step oxidation: with NaIO4 to introduce CHO groups followed by NaClO2 for CHO conversion to COOH groups. After oxidations, the fibers' morphology, surface chemistry, crystallinity, and surface charge were investigated using scanning electron microscopy (SEM), Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction analysis (XRD), and zeta potential measurements, respectively, as well as content of COOH groups determined by volumetric titrations. Sorption properties, i.e. moisture sorption, water retention power, and sorption of silver ions (Ag+) were evaluated and correlated with oxidation parameters. The interaction with model ion - Ag+ revealed that COOH groups, when maximum content obtained in oxidized fibers was 0.27 mmol center dot g(-1), were available for binding Ag+ in nearly 1:1 ratio. The proposed oxidative protocol represents an effective method for COOH groups' introduction into regenerated cellulose fibers, improvement of fibers' sorption properties without deterioration of their crystallinity, and opens up a possibility for further functionalization of 2,3-dicarboxycellulose.",
publisher = "Korean Fiber Society",
journal = "Fibers and Polymers",
title = "Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties",
pages = "2186-2177",
number = "8",
volume = "22",
doi = "10.1007/s12221-021-0996-8"
}

Kramar, A., Ivanovska, A.,& Kostić, M.. (2021). Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties. in Fibers and Polymers
Korean Fiber Society., 22(8), 2177-2186.
https://doi.org/10.1007/s12221-021-0996-8

Kramar A, Ivanovska A, Kostić M. Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties. in Fibers and Polymers. 2021;22(8):2177-2186.
doi:10.1007/s12221-021-0996-8 .

Kramar, Ana, Ivanovska, Aleksandra, Kostić, Mirjana, "Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties" in Fibers and Polymers, 22, no. 8 (2021):2177-2186,
https://doi.org/10.1007/s12221-021-0996-8 . .

TY  - JOUR
AU  - Pejić, Biljana
AU  - Kramar, Ana
AU  - Obradović, Bratislav M.
AU  - Kuraica, Milorad M.
AU  - Žekić, Andrijana
AU  - Kostić, Mirjana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4493
AB  - Hemp fibers with different amount of hemicelluloses and lignin were subjected to atmospheric pressure dielectric barrier discharge under different conditions (40 W and 80 W power of discharge, const. time 120 s) in order to study influence of plasma treatment on their structure and sorption properties. Wettability of plasma treated samples, compared with precursors, increased due to the changes in hemp fiber surface chemistry confirmed by ATR FTIR spectroscopy and increased roughness as a consequence of intensive surface etching, observed by SEM. After plasma treatment, wettability was the highest for hemp fibers with lower content of hemicelluloses (increase up to 9 times), while wettability of raw hemp fibers and fibers with lower content of lignin increased about 5 and 2 times, respectively. This investigation shows that plasma can be successfully used for improvement of raw hemp fibers wettability, even to substitute the chemical treatment for some applications of hemp.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Effect of plasma treatment on chemical composition, structure and sorption properties of lignocellulosic hemp fibers (Cannabis sativa L.)
VL  - 236
DO  - 10.1016/j.carbpol.2020.116000
ER  - 

@article{
author = "Pejić, Biljana and Kramar, Ana and Obradović, Bratislav M. and Kuraica, Milorad M. and Žekić, Andrijana and Kostić, Mirjana",
year = "2020",
abstract = "Hemp fibers with different amount of hemicelluloses and lignin were subjected to atmospheric pressure dielectric barrier discharge under different conditions (40 W and 80 W power of discharge, const. time 120 s) in order to study influence of plasma treatment on their structure and sorption properties. Wettability of plasma treated samples, compared with precursors, increased due to the changes in hemp fiber surface chemistry confirmed by ATR FTIR spectroscopy and increased roughness as a consequence of intensive surface etching, observed by SEM. After plasma treatment, wettability was the highest for hemp fibers with lower content of hemicelluloses (increase up to 9 times), while wettability of raw hemp fibers and fibers with lower content of lignin increased about 5 and 2 times, respectively. This investigation shows that plasma can be successfully used for improvement of raw hemp fibers wettability, even to substitute the chemical treatment for some applications of hemp.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Effect of plasma treatment on chemical composition, structure and sorption properties of lignocellulosic hemp fibers (Cannabis sativa L.)",
volume = "236",
doi = "10.1016/j.carbpol.2020.116000"
}

Pejić, B., Kramar, A., Obradović, B. M., Kuraica, M. M., Žekić, A.,& Kostić, M.. (2020). Effect of plasma treatment on chemical composition, structure and sorption properties of lignocellulosic hemp fibers (Cannabis sativa L.). in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 236.
https://doi.org/10.1016/j.carbpol.2020.116000

Pejić B, Kramar A, Obradović BM, Kuraica MM, Žekić A, Kostić M. Effect of plasma treatment on chemical composition, structure and sorption properties of lignocellulosic hemp fibers (Cannabis sativa L.). in Carbohydrate Polymers. 2020;236.
doi:10.1016/j.carbpol.2020.116000 .

Pejić, Biljana, Kramar, Ana, Obradović, Bratislav M., Kuraica, Milorad M., Žekić, Andrijana, Kostić, Mirjana, "Effect of plasma treatment on chemical composition, structure and sorption properties of lignocellulosic hemp fibers (Cannabis sativa L.)" in Carbohydrate Polymers, 236 (2020),
https://doi.org/10.1016/j.carbpol.2020.116000 . .

TY  - CONF
AU  - Knežević, Marina
AU  - Kramar, Ana
AU  - Nikolić, Tanja
AU  - Korica, Matea
AU  - Kostić, Mirjana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6830
AB  - Tekstilni materijali imaju veoma Siroku primenu u medicini. Ovoj grupi materijala
pripadaju bolniike uniforme, posteljina, mantili, zavaji, gaze, hiruriki konci, veitadki orgaai i
sl. Baza za izrada proizvoda od tekstila koji se koriste u medicini su naj6el6e bioloSki-aktivna
vlakna. Obzirom da u bolnicarna wlo desto mikroorganizmi stvaraju i pogorSavaju probleme
prenolenjem bolesti i infekcija potrebna je adekvatna za*tita, odnosno obrada materijala kako
ne bi dolazilo do njihovog razmnolavanja. Biolo5ki-aktirzna vlakna, pored primene u
profilaksi, takode, koriste se i u terapeutske swhe. Posebno su od velikogzrntaja u terapijama
gde je neophodno da se nivo leka odrZava u duZem vremenskom intervalu. Moie se slobodno
reii da ova vlakna i materijali izradeni od njih pripadaju savremenim medicinskim
materijalima.
AB  - Textile materials have a very wide application in medicine. This group of rnaterials includes
hospital uniforms, bedding, coats, bandages, gauze, surgical sutures, artificial organs,etc. The
basis for the manufacture of textile products for medical use are the most commonly
biologically active fibers. Because in hospitals very often microorganisms create and
exacerbate problems by transmitting diseases and infections, adequate protection or treatment
of materials is required to prevent their reproduction. Biologically active fibers, in addition to
prophylaxis, are also used for therapeutic purposes" They are especially important in therapies
where it is necessary to maintain the drug level over a long period of time. It is safe to say that
these fibers and the materials made from them belong to modern medical materials.
PB  - Požarevac : Društvo hemičara, tehnologa i metalurga
C3  - Zbornik radova / Savetovanje: Novi materijali i mogućnosti njihove primene, Požarevac, 19. novembar 2019. godine
T1  - Biološki-aktivna vlakna, njihova primena u medicini
EP  - 60
SP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6830
ER  - 

@conference{
author = "Knežević, Marina and Kramar, Ana and Nikolić, Tanja and Korica, Matea and Kostić, Mirjana",
year = "2019",
abstract = "Tekstilni materijali imaju veoma Siroku primenu u medicini. Ovoj grupi materijala
pripadaju bolniike uniforme, posteljina, mantili, zavaji, gaze, hiruriki konci, veitadki orgaai i
sl. Baza za izrada proizvoda od tekstila koji se koriste u medicini su naj6el6e bioloSki-aktivna
vlakna. Obzirom da u bolnicarna wlo desto mikroorganizmi stvaraju i pogorSavaju probleme
prenolenjem bolesti i infekcija potrebna je adekvatna za*tita, odnosno obrada materijala kako
ne bi dolazilo do njihovog razmnolavanja. Biolo5ki-aktirzna vlakna, pored primene u
profilaksi, takode, koriste se i u terapeutske swhe. Posebno su od velikogzrntaja u terapijama
gde je neophodno da se nivo leka odrZava u duZem vremenskom intervalu. Moie se slobodno
reii da ova vlakna i materijali izradeni od njih pripadaju savremenim medicinskim
materijalima., Textile materials have a very wide application in medicine. This group of rnaterials includes
hospital uniforms, bedding, coats, bandages, gauze, surgical sutures, artificial organs,etc. The
basis for the manufacture of textile products for medical use are the most commonly
biologically active fibers. Because in hospitals very often microorganisms create and
exacerbate problems by transmitting diseases and infections, adequate protection or treatment
of materials is required to prevent their reproduction. Biologically active fibers, in addition to
prophylaxis, are also used for therapeutic purposes" They are especially important in therapies
where it is necessary to maintain the drug level over a long period of time. It is safe to say that
these fibers and the materials made from them belong to modern medical materials.",
publisher = "Požarevac : Društvo hemičara, tehnologa i metalurga",
journal = "Zbornik radova / Savetovanje: Novi materijali i mogućnosti njihove primene, Požarevac, 19. novembar 2019. godine",
title = "Biološki-aktivna vlakna, njihova primena u medicini",
pages = "60-56",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6830"
}

Knežević, M., Kramar, A., Nikolić, T., Korica, M.,& Kostić, M.. (2019). Biološki-aktivna vlakna, njihova primena u medicini. in Zbornik radova / Savetovanje: Novi materijali i mogućnosti njihove primene, Požarevac, 19. novembar 2019. godine
Požarevac : Društvo hemičara, tehnologa i metalurga., 56-60.
https://hdl.handle.net/21.15107/rcub_technorep_6830

Knežević M, Kramar A, Nikolić T, Korica M, Kostić M. Biološki-aktivna vlakna, njihova primena u medicini. in Zbornik radova / Savetovanje: Novi materijali i mogućnosti njihove primene, Požarevac, 19. novembar 2019. godine. 2019;:56-60.
https://hdl.handle.net/21.15107/rcub_technorep_6830 .

Knežević, Marina, Kramar, Ana, Nikolić, Tanja, Korica, Matea, Kostić, Mirjana, "Biološki-aktivna vlakna, njihova primena u medicini" in Zbornik radova / Savetovanje: Novi materijali i mogućnosti njihove primene, Požarevac, 19. novembar 2019. godine (2019):56-60,
https://hdl.handle.net/21.15107/rcub_technorep_6830 .

TY  - CONF
AU  - Knežević, Marina
AU  - Kramar, Ana
AU  - Korica, Matea
AU  - Nikolić, Tanja
AU  - Žekić, Andrijana
AU  - Kostić, Mirjana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6829
AB  - In this work, an influence of oxidation with potassium
permanganate (KMnO4) of different  concentration, on the structure,
sorption properties and surface charge of cotton yarn was  investigated.
Cotton oxidation was performed at const pH for 1 hour. After the
oxidation,
samples were washed, dried and characterized from the aspect of change in
morphology,  sorption properties, COOH group content and surface charge.
The results have shown that  oxidation with the most concentrated solution
of KMnO4 led to significant increase of COOH group content in the sample
(around 6 times), which thus led to increment of moisture sorption as well
as reduction of zeta potential in basic range. These results confirmed
that KMnO4 could be successfully used for cotton oxidation with aim to
improve
sorption properties.
PB  - Beograd : Srpsko hemijsko društvo
C3  - Knjiga radova / 56. savetovanje Srpskog hemijskog društva, Niš, 7. i 8. juni 2019
T1  - Uticaj oksidacije na strukturu i površinsko naelektrisanje pamučne pređe
T1  - Influence of oxidation on the structure and surface charge of cotton yarn
EP  - 83
SP  - 78
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6829
ER  - 

@conference{
author = "Knežević, Marina and Kramar, Ana and Korica, Matea and Nikolić, Tanja and Žekić, Andrijana and Kostić, Mirjana",
year = "2019",
abstract = "In this work, an influence of oxidation with potassium
permanganate (KMnO4) of different  concentration, on the structure,
sorption properties and surface charge of cotton yarn was  investigated.
Cotton oxidation was performed at const pH for 1 hour. After the
oxidation,
samples were washed, dried and characterized from the aspect of change in
morphology,  sorption properties, COOH group content and surface charge.
The results have shown that  oxidation with the most concentrated solution
of KMnO4 led to significant increase of COOH group content in the sample
(around 6 times), which thus led to increment of moisture sorption as well
as reduction of zeta potential in basic range. These results confirmed
that KMnO4 could be successfully used for cotton oxidation with aim to
improve
sorption properties.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Knjiga radova / 56. savetovanje Srpskog hemijskog društva, Niš, 7. i 8. juni 2019",
title = "Uticaj oksidacije na strukturu i površinsko naelektrisanje pamučne pređe, Influence of oxidation on the structure and surface charge of cotton yarn",
pages = "83-78",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6829"
}

Knežević, M., Kramar, A., Korica, M., Nikolić, T., Žekić, A.,& Kostić, M.. (2019). Uticaj oksidacije na strukturu i površinsko naelektrisanje pamučne pređe. in Knjiga radova / 56. savetovanje Srpskog hemijskog društva, Niš, 7. i 8. juni 2019
Beograd : Srpsko hemijsko društvo., 78-83.
https://hdl.handle.net/21.15107/rcub_technorep_6829

Knežević M, Kramar A, Korica M, Nikolić T, Žekić A, Kostić M. Uticaj oksidacije na strukturu i površinsko naelektrisanje pamučne pređe. in Knjiga radova / 56. savetovanje Srpskog hemijskog društva, Niš, 7. i 8. juni 2019. 2019;:78-83.
https://hdl.handle.net/21.15107/rcub_technorep_6829 .

Knežević, Marina, Kramar, Ana, Korica, Matea, Nikolić, Tanja, Žekić, Andrijana, Kostić, Mirjana, "Uticaj oksidacije na strukturu i površinsko naelektrisanje pamučne pređe" in Knjiga radova / 56. savetovanje Srpskog hemijskog društva, Niš, 7. i 8. juni 2019 (2019):78-83,
https://hdl.handle.net/21.15107/rcub_technorep_6829 .

TY  - CONF
AU  - Knežević, Marina
AU  - Nikolić, Tanja
AU  - Kramar, Ana
AU  - Korica, Matea
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6827
AB  - Jedna od najaktuelnijih tema u svetu je ekologija i zagađenje
životne sredine. Ispuštanje toksičnih materija iz raznih industrijskih
pogona u neposrednu okolinu dovodi do zagađenja vode, vazduha i zemljišta.
U pogonima gde se proizvodni proces vrši uz mokru obradu veliki problem
predstavljaju otpadne vode. Jedan od primera je proces bojenja u
tekstilnoj industriji (gde postoji problem uklanjanja ostataka boja kao
organskog zagađivača iz vode). Postoje različiti fizičko hemijski i
biološki postupci za prečišćavanje otpadnih voda. U tekstilnoj industriji
se, pored otpadnih voda, generišu još dve vrste otpada a to su gasovi i
čvrsti otpad. Najčešće korišćen postupak za prečišćavanje je adsorpcija.
AB  - The current topic in the world is ecology, that is, preventing
or at least reducing environmental pollution. The release of toxic
substances from various industrial plants into the immediate environment
causes pollution of water, air and soil. In plants where the production
process is carried out with wet treatment, wastewater is a major problem.
One example is the dyeing process in the textile industry (where there is
a problem of removing dye residues as an organic pollutant from water).
There are various physicochemical and biological processes for
wastewater treatment. In the textile industry, in addition to wastewater,
two more types of waste are generated, namely gases and solid waste. The
most commonly used treatment method is adsorption.
PB  - Beograd : Beogradska politehnika
C3  - Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine
T1  - BIOSORBENTI ZA PREČIŠĆAVANJE OTPADNIH VODA IZ TEKSTILNE INDUSTRIJE
T1  - TEXTILE INDUSTRY WASTE WATERTREATMENT
EP  - 286
SP  - 282
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6827
ER  - 

@conference{
author = "Knežević, Marina and Nikolić, Tanja and Kramar, Ana and Korica, Matea",
year = "2019",
abstract = "Jedna od najaktuelnijih tema u svetu je ekologija i zagađenje
životne sredine. Ispuštanje toksičnih materija iz raznih industrijskih
pogona u neposrednu okolinu dovodi do zagađenja vode, vazduha i zemljišta.
U pogonima gde se proizvodni proces vrši uz mokru obradu veliki problem
predstavljaju otpadne vode. Jedan od primera je proces bojenja u
tekstilnoj industriji (gde postoji problem uklanjanja ostataka boja kao
organskog zagađivača iz vode). Postoje različiti fizičko hemijski i
biološki postupci za prečišćavanje otpadnih voda. U tekstilnoj industriji
se, pored otpadnih voda, generišu još dve vrste otpada a to su gasovi i
čvrsti otpad. Najčešće korišćen postupak za prečišćavanje je adsorpcija., The current topic in the world is ecology, that is, preventing
or at least reducing environmental pollution. The release of toxic
substances from various industrial plants into the immediate environment
causes pollution of water, air and soil. In plants where the production
process is carried out with wet treatment, wastewater is a major problem.
One example is the dyeing process in the textile industry (where there is
a problem of removing dye residues as an organic pollutant from water).
There are various physicochemical and biological processes for
wastewater treatment. In the textile industry, in addition to wastewater,
two more types of waste are generated, namely gases and solid waste. The
most commonly used treatment method is adsorption.",
publisher = "Beograd : Beogradska politehnika",
journal = "Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine",
title = "BIOSORBENTI ZA PREČIŠĆAVANJE OTPADNIH VODA IZ TEKSTILNE INDUSTRIJE, TEXTILE INDUSTRY WASTE WATERTREATMENT",
pages = "286-282",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6827"
}

Knežević, M., Nikolić, T., Kramar, A.,& Korica, M.. (2019). BIOSORBENTI ZA PREČIŠĆAVANJE OTPADNIH VODA IZ TEKSTILNE INDUSTRIJE. in Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine
Beograd : Beogradska politehnika., 282-286.
https://hdl.handle.net/21.15107/rcub_technorep_6827

Knežević M, Nikolić T, Kramar A, Korica M. BIOSORBENTI ZA PREČIŠĆAVANJE OTPADNIH VODA IZ TEKSTILNE INDUSTRIJE. in Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine. 2019;:282-286.
https://hdl.handle.net/21.15107/rcub_technorep_6827 .

Knežević, Marina, Nikolić, Tanja, Kramar, Ana, Korica, Matea, "BIOSORBENTI ZA PREČIŠĆAVANJE OTPADNIH VODA IZ TEKSTILNE INDUSTRIJE" in Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine (2019):282-286,
https://hdl.handle.net/21.15107/rcub_technorep_6827 .

TY  - JOUR
AU  - Dimić-Misić, Katarina
AU  - Kostić, Mirjana
AU  - Obradović, Bratislav M.
AU  - Kramar, Ana
AU  - Jovanović, Stevan
AU  - Stepanenko, Dimitrije
AU  - Mitrović-Dankulov, Marija
AU  - Lazović, Saša
AU  - Johansson, Leena-Sisko
AU  - Maloney, Thad
AU  - Gane, Patrick
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4248
AB  - We find that nitrogen plasma treatment of micro/nanofibrillated cellulose films increases wettability of the surface by both liquid polar water and nonpolar hexadecane. The increased wetting effect is more pronounced in the case of polar liquid, favouring the use of plasma treated micro/nanofibrillated cellulose films as substrates for a range of inkjet printing including organic-based polar-solvent inks. The films were formed from aqueous suspensions of progressively enzymatic pretreated wood-free cellulose fibres, resulting in increased removal of amorphous species producing novel nanocellulose surfaces displaying increasing crystallinity. The mechanical properties of each film are shown to be highly dependent on the enzymatic pretreatment time. The change in surface chemistry arising from exposure to nitrogen plasma is revealed using X-ray photoelectron spectroscopy. That both polar and dispersive surface energy components become increased, as measured by contact angle, is also linked to an increase in surface roughness. The change in surface free energy is exemplified to favour the trapping of photovoltaic inks.
PB  - Springer, Dordrecht
T2  - Cellulose
T1  - Nitrogen plasma surface treatment for improving polar ink adhesion on micro/nanofibrillated cellulose films
EP  - 3857
IS  - 6
SP  - 3845
VL  - 26
DO  - 10.1007/s10570-019-02269-4
ER  - 

@article{
author = "Dimić-Misić, Katarina and Kostić, Mirjana and Obradović, Bratislav M. and Kramar, Ana and Jovanović, Stevan and Stepanenko, Dimitrije and Mitrović-Dankulov, Marija and Lazović, Saša and Johansson, Leena-Sisko and Maloney, Thad and Gane, Patrick",
year = "2019",
abstract = "We find that nitrogen plasma treatment of micro/nanofibrillated cellulose films increases wettability of the surface by both liquid polar water and nonpolar hexadecane. The increased wetting effect is more pronounced in the case of polar liquid, favouring the use of plasma treated micro/nanofibrillated cellulose films as substrates for a range of inkjet printing including organic-based polar-solvent inks. The films were formed from aqueous suspensions of progressively enzymatic pretreated wood-free cellulose fibres, resulting in increased removal of amorphous species producing novel nanocellulose surfaces displaying increasing crystallinity. The mechanical properties of each film are shown to be highly dependent on the enzymatic pretreatment time. The change in surface chemistry arising from exposure to nitrogen plasma is revealed using X-ray photoelectron spectroscopy. That both polar and dispersive surface energy components become increased, as measured by contact angle, is also linked to an increase in surface roughness. The change in surface free energy is exemplified to favour the trapping of photovoltaic inks.",
publisher = "Springer, Dordrecht",
journal = "Cellulose",
title = "Nitrogen plasma surface treatment for improving polar ink adhesion on micro/nanofibrillated cellulose films",
pages = "3857-3845",
number = "6",
volume = "26",
doi = "10.1007/s10570-019-02269-4"
}

Dimić-Misić, K., Kostić, M., Obradović, B. M., Kramar, A., Jovanović, S., Stepanenko, D., Mitrović-Dankulov, M., Lazović, S., Johansson, L., Maloney, T.,& Gane, P.. (2019). Nitrogen plasma surface treatment for improving polar ink adhesion on micro/nanofibrillated cellulose films. in Cellulose
Springer, Dordrecht., 26(6), 3845-3857.
https://doi.org/10.1007/s10570-019-02269-4

Dimić-Misić K, Kostić M, Obradović BM, Kramar A, Jovanović S, Stepanenko D, Mitrović-Dankulov M, Lazović S, Johansson L, Maloney T, Gane P. Nitrogen plasma surface treatment for improving polar ink adhesion on micro/nanofibrillated cellulose films. in Cellulose. 2019;26(6):3845-3857.
doi:10.1007/s10570-019-02269-4 .

Dimić-Misić, Katarina, Kostić, Mirjana, Obradović, Bratislav M., Kramar, Ana, Jovanović, Stevan, Stepanenko, Dimitrije, Mitrović-Dankulov, Marija, Lazović, Saša, Johansson, Leena-Sisko, Maloney, Thad, Gane, Patrick, "Nitrogen plasma surface treatment for improving polar ink adhesion on micro/nanofibrillated cellulose films" in Cellulose, 26, no. 6 (2019):3845-3857,
https://doi.org/10.1007/s10570-019-02269-4 . .

TY  - JOUR
AU  - Kostić, Mirjana
AU  - Pejić, Biljana
AU  - Milanović, Jovana
AU  - Kramar, Ana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3830
AB  - The paper gives an overview of the current state in the field of natural and chemical cellulose fibers, as well as future prospects of these fibers. While there is a strong expansion of the synthetic fibers industry, world production and consumption of natural and chemical cellulosic fibers were stabilized at certain level with small oscillation in the last few years. Cotton production reaches average level at 25 mil.ton, flax production at 0.8 mil. ton, hemp production at 0.07 mil.ton and jute production at 3.3 mil.ton, while chemical cellulosic fiber production reaches average level at 6 mil.ton. It is expected that cellulose fibers only for clothing, will be in demand up to 40 mil.ton in the year 2050 due to growing market of hydrophylic fibers and tendency to develop production of natural, light, renewable and biodegradable fibers. In this regard, bast fibers, such as flax, hemp, jute, ramie, etc., isolated from plants that cause little or no detrimental effect on the ecosystem, acquire enormous significance. Their modification and conversion into novel value-added products have been discussed.
AB  - U radu je prikazano sadašnje stanje u oblasti prirodnih i hemijskih celuloznih vlakana, kao i očekivanja vezana za ova vlakna. U poređenju sa ekspanzivnim razvojem sintetizovanih vlakana, svetska proizvodnja i potrošnja prirodnih i hemijskih celuloznih vlakana se stabilizovala na određenom nivou: proizvodnja pamuka oko 25 mil.tona, lana 0,8 mil.tona, konoplje oko 0,07 mil.tona, jute oko 3,3 mil.tona, a hemijskih celuloznih vlakana na nivou od oko 6 mil.tona. Očekuje se da će do 2050.god, zahvaljujući rastućem tržištu hidrofilnih vlakana i tendenciji ka razvoju proizvodnje lakih, prirodnih, obnovljivih i biorazgradivih vlakana, potrebe za ovim vlaknima, samo u oblasti odevnog tekstila, dostići nivo od oko 40 mil.tona. Posebno je analiziran potencijal vlakna iz like (lan, konoplja, juta, ramija), njihovo modifikovanje i konverzija u nove proizvode visoke dodate vrednosti, s obzirom da biljke iz kojih se ova vlakna izoluju, kao i sam proces njihove prerade, nemaju negativni uticaj na ekosistem.
PB  - Union of Textile Engineers and Technicians of Serbia, Belgrade
T2  - Tekstilna industrija
T1  - Cellulose fibers: Trends in production and applications
T1  - Celulozna vlakna - trendovi u proizvodnji i primeni
EP  - 24
IS  - 4
SP  - 16
VL  - 66
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3830
ER  - 

@article{
author = "Kostić, Mirjana and Pejić, Biljana and Milanović, Jovana and Kramar, Ana",
year = "2018",
abstract = "The paper gives an overview of the current state in the field of natural and chemical cellulose fibers, as well as future prospects of these fibers. While there is a strong expansion of the synthetic fibers industry, world production and consumption of natural and chemical cellulosic fibers were stabilized at certain level with small oscillation in the last few years. Cotton production reaches average level at 25 mil.ton, flax production at 0.8 mil. ton, hemp production at 0.07 mil.ton and jute production at 3.3 mil.ton, while chemical cellulosic fiber production reaches average level at 6 mil.ton. It is expected that cellulose fibers only for clothing, will be in demand up to 40 mil.ton in the year 2050 due to growing market of hydrophylic fibers and tendency to develop production of natural, light, renewable and biodegradable fibers. In this regard, bast fibers, such as flax, hemp, jute, ramie, etc., isolated from plants that cause little or no detrimental effect on the ecosystem, acquire enormous significance. Their modification and conversion into novel value-added products have been discussed., U radu je prikazano sadašnje stanje u oblasti prirodnih i hemijskih celuloznih vlakana, kao i očekivanja vezana za ova vlakna. U poređenju sa ekspanzivnim razvojem sintetizovanih vlakana, svetska proizvodnja i potrošnja prirodnih i hemijskih celuloznih vlakana se stabilizovala na određenom nivou: proizvodnja pamuka oko 25 mil.tona, lana 0,8 mil.tona, konoplje oko 0,07 mil.tona, jute oko 3,3 mil.tona, a hemijskih celuloznih vlakana na nivou od oko 6 mil.tona. Očekuje se da će do 2050.god, zahvaljujući rastućem tržištu hidrofilnih vlakana i tendenciji ka razvoju proizvodnje lakih, prirodnih, obnovljivih i biorazgradivih vlakana, potrebe za ovim vlaknima, samo u oblasti odevnog tekstila, dostići nivo od oko 40 mil.tona. Posebno je analiziran potencijal vlakna iz like (lan, konoplja, juta, ramija), njihovo modifikovanje i konverzija u nove proizvode visoke dodate vrednosti, s obzirom da biljke iz kojih se ova vlakna izoluju, kao i sam proces njihove prerade, nemaju negativni uticaj na ekosistem.",
publisher = "Union of Textile Engineers and Technicians of Serbia, Belgrade",
journal = "Tekstilna industrija",
title = "Cellulose fibers: Trends in production and applications, Celulozna vlakna - trendovi u proizvodnji i primeni",
pages = "24-16",
number = "4",
volume = "66",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3830"
}

Kostić, M., Pejić, B., Milanović, J.,& Kramar, A.. (2018). Cellulose fibers: Trends in production and applications. in Tekstilna industrija
Union of Textile Engineers and Technicians of Serbia, Belgrade., 66(4), 16-24.
https://hdl.handle.net/21.15107/rcub_technorep_3830

Kostić M, Pejić B, Milanović J, Kramar A. Cellulose fibers: Trends in production and applications. in Tekstilna industrija. 2018;66(4):16-24.
https://hdl.handle.net/21.15107/rcub_technorep_3830 .

Kostić, Mirjana, Pejić, Biljana, Milanović, Jovana, Kramar, Ana, "Cellulose fibers: Trends in production and applications" in Tekstilna industrija, 66, no. 4 (2018):16-24,
https://hdl.handle.net/21.15107/rcub_technorep_3830 .

TY  - JOUR
AU  - Lazić, Biljana D.
AU  - Pejić, Biljana
AU  - Kramar, Ana
AU  - Vukčević, Marija
AU  - Mihajlovski, Katarina
AU  - Rusmirović, Jelena
AU  - Kostić, Mirjana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3973
AB  - In this work, alkali and oxidative treatments were employed to obtain flax fibers with different content of hemicelluloses and lignin, in order to study the influence of chemical composition on structure and sorption properties of flax fibers. The flax fibers were characterized using FTIR spectroscopy and FESEM microscopy, and by determination of chemical composition, carboxyl group content, electrokinetic and sorption properties. Adsorption of silver ions was used to evaluate flax fiber sorption properties, but also to obtain antimicrobial fibers whose antimicrobial activity was tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus and fungi Candida albicans. The progressive removal of hemicelluloses or lignin influenced the sorption properties through the increased liberation of elementary fibers and accessibility of functional surface groups of flax fibers. Removal of hemicelluloses led to increase of iodine sorption without significant change in functional groups content and electrokinetic properties. On the other hand, lignin removal led to an increase of functional groups content, namely carboxyl groups, which in turn influenced better moisture and silver ions sorption. Flax fibers with incorporated silver exhibit fair antimicrobial activity against Gram (-) E. coli, Gram (+) S. aureus and fungi C. albicans.
PB  - Springer, Dordrecht
T2  - Cellulose
T1  - Influence of hemicelluloses and lignin content on structure and sorption properties of flax fibers (Linum usitatissimum L.)
EP  - 709
IS  - 1
SP  - 697
VL  - 25
DO  - 10.1007/s10570-017-1575-4
ER  - 

@article{
author = "Lazić, Biljana D. and Pejić, Biljana and Kramar, Ana and Vukčević, Marija and Mihajlovski, Katarina and Rusmirović, Jelena and Kostić, Mirjana",
year = "2018",
abstract = "In this work, alkali and oxidative treatments were employed to obtain flax fibers with different content of hemicelluloses and lignin, in order to study the influence of chemical composition on structure and sorption properties of flax fibers. The flax fibers were characterized using FTIR spectroscopy and FESEM microscopy, and by determination of chemical composition, carboxyl group content, electrokinetic and sorption properties. Adsorption of silver ions was used to evaluate flax fiber sorption properties, but also to obtain antimicrobial fibers whose antimicrobial activity was tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus and fungi Candida albicans. The progressive removal of hemicelluloses or lignin influenced the sorption properties through the increased liberation of elementary fibers and accessibility of functional surface groups of flax fibers. Removal of hemicelluloses led to increase of iodine sorption without significant change in functional groups content and electrokinetic properties. On the other hand, lignin removal led to an increase of functional groups content, namely carboxyl groups, which in turn influenced better moisture and silver ions sorption. Flax fibers with incorporated silver exhibit fair antimicrobial activity against Gram (-) E. coli, Gram (+) S. aureus and fungi C. albicans.",
publisher = "Springer, Dordrecht",
journal = "Cellulose",
title = "Influence of hemicelluloses and lignin content on structure and sorption properties of flax fibers (Linum usitatissimum L.)",
pages = "709-697",
number = "1",
volume = "25",
doi = "10.1007/s10570-017-1575-4"
}

Lazić, B. D., Pejić, B., Kramar, A., Vukčević, M., Mihajlovski, K., Rusmirović, J.,& Kostić, M.. (2018). Influence of hemicelluloses and lignin content on structure and sorption properties of flax fibers (Linum usitatissimum L.). in Cellulose
Springer, Dordrecht., 25(1), 697-709.
https://doi.org/10.1007/s10570-017-1575-4

Lazić BD, Pejić B, Kramar A, Vukčević M, Mihajlovski K, Rusmirović J, Kostić M. Influence of hemicelluloses and lignin content on structure and sorption properties of flax fibers (Linum usitatissimum L.). in Cellulose. 2018;25(1):697-709.
doi:10.1007/s10570-017-1575-4 .

Lazić, Biljana D., Pejić, Biljana, Kramar, Ana, Vukčević, Marija, Mihajlovski, Katarina, Rusmirović, Jelena, Kostić, Mirjana, "Influence of hemicelluloses and lignin content on structure and sorption properties of flax fibers (Linum usitatissimum L.)" in Cellulose, 25, no. 1 (2018):697-709,
https://doi.org/10.1007/s10570-017-1575-4 . .

TY  - CONF
AU  - Asanović, Koviljka A.
AU  - Kostić, Mirjana M.
AU  - Cerović, Dragana D.
AU  - Mihailović, Tatjana V.
AU  - Kramar, Ana D.
AU  - Pejić, Biljana M.
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6930
AB  - U radu je ukazano na značaj poznavanja elektrofizičkih svojstava tekstilnih materijala. Dat je pregled metoda za određivanje električne otpornosti tekstilnih materijala, sa akcentom na metode razvijene na Katedri za tekstilno inženjerstvo Tehnološko-metalurškog fakulteta Univerziteta u Beogradu. Istaknut je značaj određivanja električne otpornosti vlakana i pređa u smislu pružanja informacija o sklonosti tekstilnih materijala ka generisanju statičkog naelektrisanja u procesu proizvodnje, a tkanina, pletenina i netkanih tekstilnih 
materijala sa aspekta karakterisanja gotovih tekstilnih proizvoda u pogledu stvaranja statičkog naelektrisanja i njegovog uticaja na upotrebna svojstva gotovih proizvoda. U radu je dat i prikaz metoda za kontrolu i sniženje statičkog naelektrisanja na tekstilnom materijalu.
AB  - In this work, the importance of knowing the electrophysical properties of textile materials was pointed out. A review of the methods for determining the electrical resistance of textile materials is given, with emphasis on methods developed at the Department of Textile Engineering of the Faculty of Technology and Metallurgy, University of Belgrade. Determining the electrical resistance of fibers and yarns plays a role in providing information on the tendency of textile materials to generate static electricity in the production process. Determining the electrical resistance of woven, knitted and nonwoven fabrics allows us to predict whether these textile products would generate static electricity, and the impact it would have on the usability of finished 
products. This work also presents a review of methods for controlling and decreasing static electricity in textile materials.
PB  - Beograd : Visoka tekstilna strukovna škola za dizajn, tehnologiju i menadžment
C3  - Zbornik radova / VI naučno stručni skup sa međunarodnim učešćem "Tendencije razvoja u tekstilnoj industriji - Dizajn, Tehnologija, Menadžment", Beograd, 27. Jun 2018
T1  - SKLONOSTI TEKSTILNIH MATERIJALA KA STATIČKOM NAELEKTRISANJU: METODE ZA KARAKTERIZACIJU I KONTROLU
T1  - TENDENCY OF TEXTILE MATERIALS TO GENERATE STATIC ELECTRICITY: METHODS FOR CHARACTERISATION AND CONTROL
EP  - 12
SP  - 5
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6930
ER  - 

@conference{
author = "Asanović, Koviljka A. and Kostić, Mirjana M. and Cerović, Dragana D. and Mihailović, Tatjana V. and Kramar, Ana D. and Pejić, Biljana M.",
year = "2018",
abstract = "U radu je ukazano na značaj poznavanja elektrofizičkih svojstava tekstilnih materijala. Dat je pregled metoda za određivanje električne otpornosti tekstilnih materijala, sa akcentom na metode razvijene na Katedri za tekstilno inženjerstvo Tehnološko-metalurškog fakulteta Univerziteta u Beogradu. Istaknut je značaj određivanja električne otpornosti vlakana i pređa u smislu pružanja informacija o sklonosti tekstilnih materijala ka generisanju statičkog naelektrisanja u procesu proizvodnje, a tkanina, pletenina i netkanih tekstilnih 
materijala sa aspekta karakterisanja gotovih tekstilnih proizvoda u pogledu stvaranja statičkog naelektrisanja i njegovog uticaja na upotrebna svojstva gotovih proizvoda. U radu je dat i prikaz metoda za kontrolu i sniženje statičkog naelektrisanja na tekstilnom materijalu., In this work, the importance of knowing the electrophysical properties of textile materials was pointed out. A review of the methods for determining the electrical resistance of textile materials is given, with emphasis on methods developed at the Department of Textile Engineering of the Faculty of Technology and Metallurgy, University of Belgrade. Determining the electrical resistance of fibers and yarns plays a role in providing information on the tendency of textile materials to generate static electricity in the production process. Determining the electrical resistance of woven, knitted and nonwoven fabrics allows us to predict whether these textile products would generate static electricity, and the impact it would have on the usability of finished 
products. This work also presents a review of methods for controlling and decreasing static electricity in textile materials.",
publisher = "Beograd : Visoka tekstilna strukovna škola za dizajn, tehnologiju i menadžment",
journal = "Zbornik radova / VI naučno stručni skup sa međunarodnim učešćem "Tendencije razvoja u tekstilnoj industriji - Dizajn, Tehnologija, Menadžment", Beograd, 27. Jun 2018",
title = "SKLONOSTI TEKSTILNIH MATERIJALA KA STATIČKOM NAELEKTRISANJU: METODE ZA KARAKTERIZACIJU I KONTROLU, TENDENCY OF TEXTILE MATERIALS TO GENERATE STATIC ELECTRICITY: METHODS FOR CHARACTERISATION AND CONTROL",
pages = "12-5",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6930"
}

Asanović, K. A., Kostić, M. M., Cerović, D. D., Mihailović, T. V., Kramar, A. D.,& Pejić, B. M.. (2018). SKLONOSTI TEKSTILNIH MATERIJALA KA STATIČKOM NAELEKTRISANJU: METODE ZA KARAKTERIZACIJU I KONTROLU. in Zbornik radova / VI naučno stručni skup sa međunarodnim učešćem "Tendencije razvoja u tekstilnoj industriji - Dizajn, Tehnologija, Menadžment", Beograd, 27. Jun 2018
Beograd : Visoka tekstilna strukovna škola za dizajn, tehnologiju i menadžment., 5-12.
https://hdl.handle.net/21.15107/rcub_technorep_6930

Asanović KA, Kostić MM, Cerović DD, Mihailović TV, Kramar AD, Pejić BM. SKLONOSTI TEKSTILNIH MATERIJALA KA STATIČKOM NAELEKTRISANJU: METODE ZA KARAKTERIZACIJU I KONTROLU. in Zbornik radova / VI naučno stručni skup sa međunarodnim učešćem "Tendencije razvoja u tekstilnoj industriji - Dizajn, Tehnologija, Menadžment", Beograd, 27. Jun 2018. 2018;:5-12.
https://hdl.handle.net/21.15107/rcub_technorep_6930 .

Asanović, Koviljka A., Kostić, Mirjana M., Cerović, Dragana D., Mihailović, Tatjana V., Kramar, Ana D., Pejić, Biljana M., "SKLONOSTI TEKSTILNIH MATERIJALA KA STATIČKOM NAELEKTRISANJU: METODE ZA KARAKTERIZACIJU I KONTROLU" in Zbornik radova / VI naučno stručni skup sa međunarodnim učešćem "Tendencije razvoja u tekstilnoj industriji - Dizajn, Tehnologija, Menadžment", Beograd, 27. Jun 2018 (2018):5-12,
https://hdl.handle.net/21.15107/rcub_technorep_6930 .

TY  - JOUR
AU  - Kramar, Ana
AU  - Asanović, Koviljka
AU  - Obradović, Bratislav M.
AU  - Kuraica, Milorad M.
AU  - Kostić, Mirjana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3970
AB  - Cellulose fabrics (viscose and cotton) were treated with atmospheric pressure dielectric barrier discharge (DBD) in air. After DBD treatment, samples were characterized and volume electrical resistance was measured under different relative humidity conditions (phi=40-55 %). Results have shown that DBD treatment increases wettability and polar surface functional groups content, which consequently causes a decrease of volume electrical resistivity of cellulose fabrics in measured relative humidity range (phi=40-55 %). Metal ions (silver, copper, and zinc) were incorporated in untreated and plasma treated samples through sorption from aqueous solutions and incorporation of metal ions into plasma treated cellulose samples decreased electrical resistivity even further. Resistivity of cotton and viscose fabrics with incorporated metal ions followed the order Zn2+  gt  Cu2+  gt  Ag+. The most pronounced decrease, for entire order of a magnitude, was obtained by modification of cotton fabric with DBD and silver ions, where value of resistivity dropped from G Omega to a several dozens of M Omega.
PB  - Korean Fiber Soc, Seoul
T2  - Fibers and Polymers
T1  - Electrical Resistivity of Plasma Treated Viscose and Cotton Fabrics with Incorporated Metal Ions
EP  - 579
IS  - 3
SP  - 571
VL  - 19
DO  - 10.1007/s12221-018-7716-z
ER  - 

@article{
author = "Kramar, Ana and Asanović, Koviljka and Obradović, Bratislav M. and Kuraica, Milorad M. and Kostić, Mirjana",
year = "2018",
abstract = "Cellulose fabrics (viscose and cotton) were treated with atmospheric pressure dielectric barrier discharge (DBD) in air. After DBD treatment, samples were characterized and volume electrical resistance was measured under different relative humidity conditions (phi=40-55 %). Results have shown that DBD treatment increases wettability and polar surface functional groups content, which consequently causes a decrease of volume electrical resistivity of cellulose fabrics in measured relative humidity range (phi=40-55 %). Metal ions (silver, copper, and zinc) were incorporated in untreated and plasma treated samples through sorption from aqueous solutions and incorporation of metal ions into plasma treated cellulose samples decreased electrical resistivity even further. Resistivity of cotton and viscose fabrics with incorporated metal ions followed the order Zn2+  gt  Cu2+  gt  Ag+. The most pronounced decrease, for entire order of a magnitude, was obtained by modification of cotton fabric with DBD and silver ions, where value of resistivity dropped from G Omega to a several dozens of M Omega.",
publisher = "Korean Fiber Soc, Seoul",
journal = "Fibers and Polymers",
title = "Electrical Resistivity of Plasma Treated Viscose and Cotton Fabrics with Incorporated Metal Ions",
pages = "579-571",
number = "3",
volume = "19",
doi = "10.1007/s12221-018-7716-z"
}

Kramar, A., Asanović, K., Obradović, B. M., Kuraica, M. M.,& Kostić, M.. (2018). Electrical Resistivity of Plasma Treated Viscose and Cotton Fabrics with Incorporated Metal Ions. in Fibers and Polymers
Korean Fiber Soc, Seoul., 19(3), 571-579.
https://doi.org/10.1007/s12221-018-7716-z

Kramar A, Asanović K, Obradović BM, Kuraica MM, Kostić M. Electrical Resistivity of Plasma Treated Viscose and Cotton Fabrics with Incorporated Metal Ions. in Fibers and Polymers. 2018;19(3):571-579.
doi:10.1007/s12221-018-7716-z .

Kramar, Ana, Asanović, Koviljka, Obradović, Bratislav M., Kuraica, Milorad M., Kostić, Mirjana, "Electrical Resistivity of Plasma Treated Viscose and Cotton Fabrics with Incorporated Metal Ions" in Fibers and Polymers, 19, no. 3 (2018):571-579,
https://doi.org/10.1007/s12221-018-7716-z . .

TY  - JOUR
AU  - Asanović, Koviljka
AU  - Cerović, Dragana D.
AU  - Kostić, Mirjana
AU  - Maletić, Slavica B.
AU  - Kramar, Ana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3998
AB  - In this work, sorption and dielectric properties of viscose/polypropylene multipurpose nonwoven fabrics were examined. The analysis of sorption behavior showed that the changes of the water absorptive capacity, the height of capillary rise and water retention value are in a function of viscose fiber content, total porosity, the pore size and used web bonding process. It is observed that dielectric properties at frequencies from 30 Hz to 140 kHz, for samples exposed to different relative air humidity and wet samples, are dependent on viscose fiber content, web bonding process, frequency of electric field and bulk free water content. The effective dielectric permeability of wet samples rapidly decreases with an increase in frequency up to 3 kHz while spectra of the AC specific electrical conductivity showed a plateau above 13 kHz. It is also observed that the dielectric properties of wet samples increase by several orders of magnitude compared to dry samples.
PB  - Wiley, Hoboken
T2  - Journal of Polymer Science Part B-Polymer Physics
T1  - Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties
EP  - 957
IS  - 12
SP  - 947
VL  - 56
DO  - 10.1002/polb.24611
ER  - 

@article{
author = "Asanović, Koviljka and Cerović, Dragana D. and Kostić, Mirjana and Maletić, Slavica B. and Kramar, Ana",
year = "2018",
abstract = "In this work, sorption and dielectric properties of viscose/polypropylene multipurpose nonwoven fabrics were examined. The analysis of sorption behavior showed that the changes of the water absorptive capacity, the height of capillary rise and water retention value are in a function of viscose fiber content, total porosity, the pore size and used web bonding process. It is observed that dielectric properties at frequencies from 30 Hz to 140 kHz, for samples exposed to different relative air humidity and wet samples, are dependent on viscose fiber content, web bonding process, frequency of electric field and bulk free water content. The effective dielectric permeability of wet samples rapidly decreases with an increase in frequency up to 3 kHz while spectra of the AC specific electrical conductivity showed a plateau above 13 kHz. It is also observed that the dielectric properties of wet samples increase by several orders of magnitude compared to dry samples.",
publisher = "Wiley, Hoboken",
journal = "Journal of Polymer Science Part B-Polymer Physics",
title = "Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties",
pages = "957-947",
number = "12",
volume = "56",
doi = "10.1002/polb.24611"
}

Asanović, K., Cerović, D. D., Kostić, M., Maletić, S. B.,& Kramar, A.. (2018). Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties. in Journal of Polymer Science Part B-Polymer Physics
Wiley, Hoboken., 56(12), 947-957.
https://doi.org/10.1002/polb.24611

Asanović K, Cerović DD, Kostić M, Maletić SB, Kramar A. Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties. in Journal of Polymer Science Part B-Polymer Physics. 2018;56(12):947-957.
doi:10.1002/polb.24611 .

Asanović, Koviljka, Cerović, Dragana D., Kostić, Mirjana, Maletić, Slavica B., Kramar, Ana, "Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties" in Journal of Polymer Science Part B-Polymer Physics, 56, no. 12 (2018):947-957,
https://doi.org/10.1002/polb.24611 . .

TY  - PAT
AU  - Kostić, Mirjana
AU  - Nikolić, Tanja
AU  - Korica, Matea
AU  - Milanović, Jovana
AU  - Kramar, Ana
AU  - Petronijević, Živomir
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6833
PB  - Zavod za intelektualnu svojinu, Beograd, Republika Srbija
T2  - Zavod za intelektualnu svojinu, Beograd, Republika Srbija
T1  - Biološki aktivna vlakna pamuka sa imobilisanim tripsinom
T1  - Bioactive cotton fibers with immobilized trypsin
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6833
ER  - 

@misc{
author = "Kostić, Mirjana and Nikolić, Tanja and Korica, Matea and Milanović, Jovana and Kramar, Ana and Petronijević, Živomir",
year = "2018",
publisher = "Zavod za intelektualnu svojinu, Beograd, Republika Srbija",
journal = "Zavod za intelektualnu svojinu, Beograd, Republika Srbija",
title = "Biološki aktivna vlakna pamuka sa imobilisanim tripsinom, Bioactive cotton fibers with immobilized trypsin",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6833"
}

Kostić, M., Nikolić, T., Korica, M., Milanović, J., Kramar, A.,& Petronijević, Ž.. (2018). Biološki aktivna vlakna pamuka sa imobilisanim tripsinom. in Zavod za intelektualnu svojinu, Beograd, Republika Srbija
Zavod za intelektualnu svojinu, Beograd, Republika Srbija..
https://hdl.handle.net/21.15107/rcub_technorep_6833

Kostić M, Nikolić T, Korica M, Milanović J, Kramar A, Petronijević Ž. Biološki aktivna vlakna pamuka sa imobilisanim tripsinom. in Zavod za intelektualnu svojinu, Beograd, Republika Srbija. 2018;.
https://hdl.handle.net/21.15107/rcub_technorep_6833 .

Kostić, Mirjana, Nikolić, Tanja, Korica, Matea, Milanović, Jovana, Kramar, Ana, Petronijević, Živomir, "Biološki aktivna vlakna pamuka sa imobilisanim tripsinom" in Zavod za intelektualnu svojinu, Beograd, Republika Srbija (2018),
https://hdl.handle.net/21.15107/rcub_technorep_6833 .

TY  - JOUR
AU  - Nikolić, Tanja
AU  - Hajnrih, Teodora
AU  - Kramar, Ana
AU  - Petronijević, Živomir
AU  - Kostić, Mirjana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3784
AB  - Viscose yarn was submitted to oxidation using different sodium periodate concentrations for various periods of time in order to investigate the influence of oxidation on the chemical and sorption properties of the resulting yarns. The oxidation progress was monitored through periodate consumption, aldehyde group content and weight loss of the modified samples. The aldehyde groups were introduced into the oxidized viscose up to 1.284 mmol/g, while the weight loss was generally of about 5%. Compared to the untreated yarn, the oxidized samples exhibited lower water retention and iodine sorption values - of 32.4% and 53.6%, respectively, while moisture sorption values decreased for an oxidation time up to 180 min and increased when the time of oxidation was longer, up to 360 min. The changes in viscose yarn wettability, because of the oxidation treatment, were evaluated based on the parameters determined by the capillary rise method, which are related to the coefficient of diffusion and radius of pores.
PB  - Editura Acad Romane, Bucuresti
T2  - Cellulose Chemistry and Technology
T1  - Influence of periodate oxidation on sorption properties of viscose yarn
EP  - 467
IS  - 5-6
SP  - 459
VL  - 52
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3784
ER  - 

@article{
author = "Nikolić, Tanja and Hajnrih, Teodora and Kramar, Ana and Petronijević, Živomir and Kostić, Mirjana",
year = "2018",
abstract = "Viscose yarn was submitted to oxidation using different sodium periodate concentrations for various periods of time in order to investigate the influence of oxidation on the chemical and sorption properties of the resulting yarns. The oxidation progress was monitored through periodate consumption, aldehyde group content and weight loss of the modified samples. The aldehyde groups were introduced into the oxidized viscose up to 1.284 mmol/g, while the weight loss was generally of about 5%. Compared to the untreated yarn, the oxidized samples exhibited lower water retention and iodine sorption values - of 32.4% and 53.6%, respectively, while moisture sorption values decreased for an oxidation time up to 180 min and increased when the time of oxidation was longer, up to 360 min. The changes in viscose yarn wettability, because of the oxidation treatment, were evaluated based on the parameters determined by the capillary rise method, which are related to the coefficient of diffusion and radius of pores.",
publisher = "Editura Acad Romane, Bucuresti",
journal = "Cellulose Chemistry and Technology",
title = "Influence of periodate oxidation on sorption properties of viscose yarn",
pages = "467-459",
number = "5-6",
volume = "52",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3784"
}

Nikolić, T., Hajnrih, T., Kramar, A., Petronijević, Ž.,& Kostić, M.. (2018). Influence of periodate oxidation on sorption properties of viscose yarn. in Cellulose Chemistry and Technology
Editura Acad Romane, Bucuresti., 52(5-6), 459-467.
https://hdl.handle.net/21.15107/rcub_technorep_3784

Nikolić T, Hajnrih T, Kramar A, Petronijević Ž, Kostić M. Influence of periodate oxidation on sorption properties of viscose yarn. in Cellulose Chemistry and Technology. 2018;52(5-6):459-467.
https://hdl.handle.net/21.15107/rcub_technorep_3784 .

Nikolić, Tanja, Hajnrih, Teodora, Kramar, Ana, Petronijević, Živomir, Kostić, Mirjana, "Influence of periodate oxidation on sorption properties of viscose yarn" in Cellulose Chemistry and Technology, 52, no. 5-6 (2018):459-467,
https://hdl.handle.net/21.15107/rcub_technorep_3784 .

TY  - JOUR
AU  - Kramar, Ana
AU  - Obradović, Bratislav M.
AU  - Vesel, Alenka
AU  - Kuraica, Milorad M.
AU  - Kostić, Mirjana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4019
AB  - In this work, a possibility to use atmospheric pressure plasma treatment to clean cotton fibers surface was investigated. Dielectric barrier discharge (DBD) operating in air was used as plasma source. After plasma treatment, cotton fibers were characterized using several surface techniques: SEM, XPS, ATR-FTIR and zeta potential measurement; also wettability was evaluated using capillary height measurement. Results of investigation showed that plasma treatment primarily affects cuticle and primary wall of cotton which provides cleaning of the fibers surface. This caused increase of polar groups accessibility and better wettability of cotton samples. An attempt has been made to locate influence of plasma treatment on different structural layers of cotton fibers using different surface techniques. In addition, surface charge was investigated through measuring streaming potential and a connection was established between zeta potential and plasma treatment time. Furthermore, it was shown that measuring of zeta potential could be used as an additional technique to track changes and elucidate mechanisms of plasma treatment influence on cotton fibers.
PB  - Springer, Dordrecht
T2  - Cellulose
T1  - Surface cleaning of raw cotton fibers with atmospheric pressure air plasma
EP  - 4209
IS  - 7
SP  - 4199
VL  - 25
DO  - 10.1007/s10570-018-1820-5
ER  - 

@article{
author = "Kramar, Ana and Obradović, Bratislav M. and Vesel, Alenka and Kuraica, Milorad M. and Kostić, Mirjana",
year = "2018",
abstract = "In this work, a possibility to use atmospheric pressure plasma treatment to clean cotton fibers surface was investigated. Dielectric barrier discharge (DBD) operating in air was used as plasma source. After plasma treatment, cotton fibers were characterized using several surface techniques: SEM, XPS, ATR-FTIR and zeta potential measurement; also wettability was evaluated using capillary height measurement. Results of investigation showed that plasma treatment primarily affects cuticle and primary wall of cotton which provides cleaning of the fibers surface. This caused increase of polar groups accessibility and better wettability of cotton samples. An attempt has been made to locate influence of plasma treatment on different structural layers of cotton fibers using different surface techniques. In addition, surface charge was investigated through measuring streaming potential and a connection was established between zeta potential and plasma treatment time. Furthermore, it was shown that measuring of zeta potential could be used as an additional technique to track changes and elucidate mechanisms of plasma treatment influence on cotton fibers.",
publisher = "Springer, Dordrecht",
journal = "Cellulose",
title = "Surface cleaning of raw cotton fibers with atmospheric pressure air plasma",
pages = "4209-4199",
number = "7",
volume = "25",
doi = "10.1007/s10570-018-1820-5"
}

Kramar, A., Obradović, B. M., Vesel, A., Kuraica, M. M.,& Kostić, M.. (2018). Surface cleaning of raw cotton fibers with atmospheric pressure air plasma. in Cellulose
Springer, Dordrecht., 25(7), 4199-4209.
https://doi.org/10.1007/s10570-018-1820-5

Kramar A, Obradović BM, Vesel A, Kuraica MM, Kostić M. Surface cleaning of raw cotton fibers with atmospheric pressure air plasma. in Cellulose. 2018;25(7):4199-4209.
doi:10.1007/s10570-018-1820-5 .

Kramar, Ana, Obradović, Bratislav M., Vesel, Alenka, Kuraica, Milorad M., Kostić, Mirjana, "Surface cleaning of raw cotton fibers with atmospheric pressure air plasma" in Cellulose, 25, no. 7 (2018):4199-4209,
https://doi.org/10.1007/s10570-018-1820-5 . .

TY  - CONF
AU  - Knežević, Marina
AU  - Hajnrih, Teodora
AU  - Korica, Matea
AU  - Kramar, Ana
AU  - Kostić, Mirjana
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6859
AB  - U ovom radu pamučna pređa je oksidisana kalijum-pemanganatom (KMnO4) pri različitim pH vrednostima i različitim koncentracijama na sobnoj temperaturi. Oksidacija je vršena u cilju čišćenja pamučnih vlakana i uvođenja funkcionalnih grupa u vlakno, kao i ispitivanja mogućnosti deponovanja mangan-dioksida (MnO2) na površinu vlakana tokom oksidacije. Naime, nakon oksidacije kalijum-permanganatom uobičajena procedura je da se uzorci ispiraju natrijum-metabislufitom u cilju uklanjanja zaostalog mangan-dioksida sa površine vlakana koji se javlja kao sporedni produkt oksidacije. U radu su napravljena dva seta uzoraka, pri čemu je nakon završetka oksidacije kod jednog seta uzoraka uklonjen MnO2, a kod drugog seta je ostavljen deponovan MnO2 na uzorcima. Uzorci su okarakterisani sa aspekta prekidne jačine, gubitka mase, sadržaja funckionalnih grupa i količine deponovanog MnO2. Oksidisani uzorci sa uklonjenim MnO2 su pokazali povećanje sadržaja karboksilnih grupa što ih čini veoma pogodnim kao supstrat za dalje modifikovanje, odnosno vezivanje aktivnih elemenata za vlakna. Sa druge strane, uzorci sa deponovanim MnO2 su pokazali efikasnost prilikom obezbojavanja boje metilensko plavo iz vodenih rastvora što ove uzorke čini pogodnim za prečišćavanje otpadnih voda.
AB  - In this work cotton yarn was oxidized with potassium permanganate (KMnO4) under various pH and at different concentration at room temperature. Oxidation was performed for fiber cleaning and in order to introduce functional groups in a fiber, as well as to investigate the possibility to deposit manganese dioxide (MnO2) on the fibers surface during the oxidation. Namely, after the oxidation with potassium permanganate the usual procedure includes washing of samples with sodium metabisulfite in order to remove manganese dioxide from fibers surface which forms as a byproduct of oxidation. In this work, two sets of samples were made, wherein from one set of samples, MnO2 was removed, while in other set of samples deposited MnO2 was left on them. Samples were characterized from aspects of breaking strength, weight loss, functional groups content and the amount of deposited MnO2. Oxidized samples with removed MnO2 exhibited increased amount of functional groups which makes them suitable as a substrate for further modification, i.e. for binding active elements to fibers. On the other hand, samples with deposited MnO2 have shown the efficiency in decolorization of methylene blue solution, which makes these samples suitable for waste water purification.
PB  - Požarevac : Društvo hemičara, tehnologa i metalurga
C3  - Zbornik radova / Savetovanje Novi materijali i mogućnost njihove primene, Požarevac, 17. novembar 2017. godine
T1  - Multifunkcionalna svojstva pamuka oksidisanog kalijum-permanganatom
T1  - Multifunctional properties of cotton oxidized with potassium permanganate
EP  - 78
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6859
ER  - 

@conference{
author = "Knežević, Marina and Hajnrih, Teodora and Korica, Matea and Kramar, Ana and Kostić, Mirjana",
year = "2017",
abstract = "U ovom radu pamučna pređa je oksidisana kalijum-pemanganatom (KMnO4) pri različitim pH vrednostima i različitim koncentracijama na sobnoj temperaturi. Oksidacija je vršena u cilju čišćenja pamučnih vlakana i uvođenja funkcionalnih grupa u vlakno, kao i ispitivanja mogućnosti deponovanja mangan-dioksida (MnO2) na površinu vlakana tokom oksidacije. Naime, nakon oksidacije kalijum-permanganatom uobičajena procedura je da se uzorci ispiraju natrijum-metabislufitom u cilju uklanjanja zaostalog mangan-dioksida sa površine vlakana koji se javlja kao sporedni produkt oksidacije. U radu su napravljena dva seta uzoraka, pri čemu je nakon završetka oksidacije kod jednog seta uzoraka uklonjen MnO2, a kod drugog seta je ostavljen deponovan MnO2 na uzorcima. Uzorci su okarakterisani sa aspekta prekidne jačine, gubitka mase, sadržaja funckionalnih grupa i količine deponovanog MnO2. Oksidisani uzorci sa uklonjenim MnO2 su pokazali povećanje sadržaja karboksilnih grupa što ih čini veoma pogodnim kao supstrat za dalje modifikovanje, odnosno vezivanje aktivnih elemenata za vlakna. Sa druge strane, uzorci sa deponovanim MnO2 su pokazali efikasnost prilikom obezbojavanja boje metilensko plavo iz vodenih rastvora što ove uzorke čini pogodnim za prečišćavanje otpadnih voda., In this work cotton yarn was oxidized with potassium permanganate (KMnO4) under various pH and at different concentration at room temperature. Oxidation was performed for fiber cleaning and in order to introduce functional groups in a fiber, as well as to investigate the possibility to deposit manganese dioxide (MnO2) on the fibers surface during the oxidation. Namely, after the oxidation with potassium permanganate the usual procedure includes washing of samples with sodium metabisulfite in order to remove manganese dioxide from fibers surface which forms as a byproduct of oxidation. In this work, two sets of samples were made, wherein from one set of samples, MnO2 was removed, while in other set of samples deposited MnO2 was left on them. Samples were characterized from aspects of breaking strength, weight loss, functional groups content and the amount of deposited MnO2. Oxidized samples with removed MnO2 exhibited increased amount of functional groups which makes them suitable as a substrate for further modification, i.e. for binding active elements to fibers. On the other hand, samples with deposited MnO2 have shown the efficiency in decolorization of methylene blue solution, which makes these samples suitable for waste water purification.",
publisher = "Požarevac : Društvo hemičara, tehnologa i metalurga",
journal = "Zbornik radova / Savetovanje Novi materijali i mogućnost njihove primene, Požarevac, 17. novembar 2017. godine",
title = "Multifunkcionalna svojstva pamuka oksidisanog kalijum-permanganatom, Multifunctional properties of cotton oxidized with potassium permanganate",
pages = "78-71",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6859"
}

Knežević, M., Hajnrih, T., Korica, M., Kramar, A.,& Kostić, M.. (2017). Multifunkcionalna svojstva pamuka oksidisanog kalijum-permanganatom. in Zbornik radova / Savetovanje Novi materijali i mogućnost njihove primene, Požarevac, 17. novembar 2017. godine
Požarevac : Društvo hemičara, tehnologa i metalurga., 71-78.
https://hdl.handle.net/21.15107/rcub_technorep_6859

Knežević M, Hajnrih T, Korica M, Kramar A, Kostić M. Multifunkcionalna svojstva pamuka oksidisanog kalijum-permanganatom. in Zbornik radova / Savetovanje Novi materijali i mogućnost njihove primene, Požarevac, 17. novembar 2017. godine. 2017;:71-78.
https://hdl.handle.net/21.15107/rcub_technorep_6859 .

Knežević, Marina, Hajnrih, Teodora, Korica, Matea, Kramar, Ana, Kostić, Mirjana, "Multifunkcionalna svojstva pamuka oksidisanog kalijum-permanganatom" in Zbornik radova / Savetovanje Novi materijali i mogućnost njihove primene, Požarevac, 17. novembar 2017. godine (2017):71-78,
https://hdl.handle.net/21.15107/rcub_technorep_6859 .

TY  - JOUR
AU  - Knežević, Marina
AU  - Kramar, Ana
AU  - Korica, Matea
AU  - Dojčinović, Biljana
AU  - Kostić, Mirjana
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3531
AB  - The impact of nonselective cellulose oxidation (cotton fibre) by potassium permanganate in acidic environment, with or without additional treatment by sodium metabisulfite, on change of sorption (silver ions sorption), and deposition of manganese (IV) oxide were aims of this work. The standard methods and methods developed at Department of Textile Engineering of Faculty of Technology and Metallurgy Belgrade, were used for determination of introduced functional groups, sorption and mechanical properties of selected fibres. Inductively coupled plasma optical emission spectrometry ICP-OES was used for determination of manganese(IV) oxide deposited on cotton fibres. The changes of studied properties of cotton fibres were followed as a function of concentration and pH of the solution of oxidizing agent. Results obtained in this work showed that oxidized cotton fibre with improved sorption properties is appropriate as an initial raw for a wide range of textile products of special assignment.
AB  - Cilj ovog rada je proučavanje uticaja neselektivne oksidacije celuloze (pamučna pređa) kalijumpermanganatom u kiseloj sredini, na promenu sorpcionih svojstava (joni srebra) i sadržaj deponovanog mangan(IV)-oksida. Tokom eksperimenta korišćene su standardne metode i metode razvijene na Katedri za tekstilno inženjerstvo Tehnološko-metalurškog fakulteta u Beogradu. Za određivanje sadržaja mangan(IV) oksida deponovanog na pamučnoj pređi je korišćena optička emisiona spektrometrija sa induktivno spregnutom plazmom (ICP-OES). Promene ispitivanih svojstava pamučnih pređa su ispraćene u funkciji koncentracije i pH rastvora oksidacionog sredstva. Rezulati dobijeni u ovom radu su pokazali da je oksidovana pamučna pređa pogodna polazna sirovina za dobijanje širokog spektra tekstilnih proizvoda specijalne namene. PR Projekat Ministarstva nauke Republike Srbije, br. OI 172029.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Properties of cotton yarns after oxidation of potassium permanganate in an acidic environment
T1  - Svojstva pamučne pređe posle oksidacije kalijum-permanganatom u kiseloj sredini
EP  - 36
IS  - 1
SP  - 31
VL  - 58
DO  - 10.5937/ZasMat1701031K
ER  - 

@article{
author = "Knežević, Marina and Kramar, Ana and Korica, Matea and Dojčinović, Biljana and Kostić, Mirjana",
year = "2017",
abstract = "The impact of nonselective cellulose oxidation (cotton fibre) by potassium permanganate in acidic environment, with or without additional treatment by sodium metabisulfite, on change of sorption (silver ions sorption), and deposition of manganese (IV) oxide were aims of this work. The standard methods and methods developed at Department of Textile Engineering of Faculty of Technology and Metallurgy Belgrade, were used for determination of introduced functional groups, sorption and mechanical properties of selected fibres. Inductively coupled plasma optical emission spectrometry ICP-OES was used for determination of manganese(IV) oxide deposited on cotton fibres. The changes of studied properties of cotton fibres were followed as a function of concentration and pH of the solution of oxidizing agent. Results obtained in this work showed that oxidized cotton fibre with improved sorption properties is appropriate as an initial raw for a wide range of textile products of special assignment., Cilj ovog rada je proučavanje uticaja neselektivne oksidacije celuloze (pamučna pređa) kalijumpermanganatom u kiseloj sredini, na promenu sorpcionih svojstava (joni srebra) i sadržaj deponovanog mangan(IV)-oksida. Tokom eksperimenta korišćene su standardne metode i metode razvijene na Katedri za tekstilno inženjerstvo Tehnološko-metalurškog fakulteta u Beogradu. Za određivanje sadržaja mangan(IV) oksida deponovanog na pamučnoj pređi je korišćena optička emisiona spektrometrija sa induktivno spregnutom plazmom (ICP-OES). Promene ispitivanih svojstava pamučnih pređa su ispraćene u funkciji koncentracije i pH rastvora oksidacionog sredstva. Rezulati dobijeni u ovom radu su pokazali da je oksidovana pamučna pređa pogodna polazna sirovina za dobijanje širokog spektra tekstilnih proizvoda specijalne namene. PR Projekat Ministarstva nauke Republike Srbije, br. OI 172029.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Properties of cotton yarns after oxidation of potassium permanganate in an acidic environment, Svojstva pamučne pređe posle oksidacije kalijum-permanganatom u kiseloj sredini",
pages = "36-31",
number = "1",
volume = "58",
doi = "10.5937/ZasMat1701031K"
}

Knežević, M., Kramar, A., Korica, M., Dojčinović, B.,& Kostić, M.. (2017). Properties of cotton yarns after oxidation of potassium permanganate in an acidic environment. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 58(1), 31-36.
https://doi.org/10.5937/ZasMat1701031K

Knežević M, Kramar A, Korica M, Dojčinović B, Kostić M. Properties of cotton yarns after oxidation of potassium permanganate in an acidic environment. in Zaštita materijala. 2017;58(1):31-36.
doi:10.5937/ZasMat1701031K .

Knežević, Marina, Kramar, Ana, Korica, Matea, Dojčinović, Biljana, Kostić, Mirjana, "Properties of cotton yarns after oxidation of potassium permanganate in an acidic environment" in Zaštita materijala, 58, no. 1 (2017):31-36,
https://doi.org/10.5937/ZasMat1701031K . .