TY  - JOUR
AU  - Tomšič, Brigita
AU  - Vasiljević, Jelena
AU  - Simončić, Barbara
AU  - Radoičić, Marija B.
AU  - Radetić, Maja M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1722
AB  - This study discusses the effect of corona pre-treatment at atmospheric pressure and subsequent loading of colloidal TiO2 nanoparticles on the biodegradation behavior of cotton fabric. Biodegradation performance of the control and finished samples was evaluated by standard soil burial tests in predetermined periods of 3, 9 and 18 days. Color and breaking strength measurements were utilized for assessment of biodegradation progress. Morphological and chemical changes induced by biodegradation were analysed by SEM and FT-IR analyses, respectively. Colorimetric, morphological and chemical changes induced by the biodegradation process were slightly less prominent on corona pre-treated cotton fabric impregnated with TiO2 nanoparticles compared to corona treated and control cotton fabric. Although the breaking strength of all samples significantly decreased after 18 days of soil burial, this decline was the least evident on the sample impregnated with TiO2 nanoparticles. However, taking into account the extent of these differences, the influence of TiO2 nanoparticles on biodegradation rate of cotton fabric, which underwent a combined treatment corona/impregnation with TiO2 nanoparticles, could be considered as insignificant. These results confirm that chemical modification of cotton fabrics with plasma and subsequent loading of TiO2 still maintained sustainability of cellulose fibres.
T2  - Cellulose
T1  - The influence of corona treatment and impregnation with colloidal TiO2 nanoparticles on biodegradability of cotton fabric
VL  - 24
IS  - 10
SP  - 4533
EP  - 4545
DO  - 10.1007/s10570-017-1415-6
ER  - 

@article{
author = "Tomšič, Brigita and Vasiljević, Jelena and Simončić, Barbara and Radoičić, Marija B. and Radetić, Maja M.",
year = "2017",
abstract = "This study discusses the effect of corona pre-treatment at atmospheric pressure and subsequent loading of colloidal TiO2 nanoparticles on the biodegradation behavior of cotton fabric. Biodegradation performance of the control and finished samples was evaluated by standard soil burial tests in predetermined periods of 3, 9 and 18 days. Color and breaking strength measurements were utilized for assessment of biodegradation progress. Morphological and chemical changes induced by biodegradation were analysed by SEM and FT-IR analyses, respectively. Colorimetric, morphological and chemical changes induced by the biodegradation process were slightly less prominent on corona pre-treated cotton fabric impregnated with TiO2 nanoparticles compared to corona treated and control cotton fabric. Although the breaking strength of all samples significantly decreased after 18 days of soil burial, this decline was the least evident on the sample impregnated with TiO2 nanoparticles. However, taking into account the extent of these differences, the influence of TiO2 nanoparticles on biodegradation rate of cotton fabric, which underwent a combined treatment corona/impregnation with TiO2 nanoparticles, could be considered as insignificant. These results confirm that chemical modification of cotton fabrics with plasma and subsequent loading of TiO2 still maintained sustainability of cellulose fibres.",
journal = "Cellulose",
title = "The influence of corona treatment and impregnation with colloidal TiO2 nanoparticles on biodegradability of cotton fabric",
volume = "24",
number = "10",
pages = "4533-4545",
doi = "10.1007/s10570-017-1415-6"
}

Tomšič, B., Vasiljević, J., Simončić, B., Radoičić, M. B.,& Radetić, M. M.. (2017). The influence of corona treatment and impregnation with colloidal TiO2 nanoparticles on biodegradability of cotton fabric. in Cellulose, 24(10), 4533-4545.
https://doi.org/10.1007/s10570-017-1415-6

Tomšič B, Vasiljević J, Simončić B, Radoičić MB, Radetić MM. The influence of corona treatment and impregnation with colloidal TiO2 nanoparticles on biodegradability of cotton fabric. in Cellulose. 2017;24(10):4533-4545.
doi:10.1007/s10570-017-1415-6 .

Tomšič, Brigita, Vasiljević, Jelena, Simončić, Barbara, Radoičić, Marija B., Radetić, Maja M., "The influence of corona treatment and impregnation with colloidal TiO2 nanoparticles on biodegradability of cotton fabric" in Cellulose, 24, no. 10 (2017):4533-4545,
https://doi.org/10.1007/s10570-017-1415-6 . .

TY  - JOUR
AU  - Musraty, Walid
AU  - Međo, Bojan
AU  - Gubeljak, Nenad
AU  - Likeb, Andrej
AU  - Cvijović-Alagić, Ivana
AU  - Sedmak, Aleksandar S.
AU  - Rakin, Marko P.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1532
AB  - Integrity of pipes is typically assessed by testing fracture mechanics specimens, such as compact tensile (CT) or single-edge notched bending (SENB). However, for some pipe dimensions it is not easy or possible to fabricate a specimen conforming to the requirements of standard procedures. A new type of specimen is proposed recently, which can be advantageous for relatively small pipe diameters and axial defects - the pipe ring notch bend specimen - PRNB. In this work, criteria for failure by ductile fracture of PRNB specimens are determined experimentally and by application of micromechanical analysis. The influence of size of the specimen, as well as size and shape of the stress concentrator, is analysed. The results of this study, along with previous authors results, lead to the conclusion that the pipe ring specimens can be applied in integrity assessment of pipes with defects. Also, the benefits of their application include much simpler fabrication and the same material history as the pipe itself. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Engineering Fracture Mechanics
T1  - Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis
VL  - 175
SP  - 247
EP  - 261
DO  - 10.1016/j.engfracmech.2017.01.022
ER  - 

@article{
author = "Musraty, Walid and Međo, Bojan and Gubeljak, Nenad and Likeb, Andrej and Cvijović-Alagić, Ivana and Sedmak, Aleksandar S. and Rakin, Marko P.",
year = "2017",
abstract = "Integrity of pipes is typically assessed by testing fracture mechanics specimens, such as compact tensile (CT) or single-edge notched bending (SENB). However, for some pipe dimensions it is not easy or possible to fabricate a specimen conforming to the requirements of standard procedures. A new type of specimen is proposed recently, which can be advantageous for relatively small pipe diameters and axial defects - the pipe ring notch bend specimen - PRNB. In this work, criteria for failure by ductile fracture of PRNB specimens are determined experimentally and by application of micromechanical analysis. The influence of size of the specimen, as well as size and shape of the stress concentrator, is analysed. The results of this study, along with previous authors results, lead to the conclusion that the pipe ring specimens can be applied in integrity assessment of pipes with defects. Also, the benefits of their application include much simpler fabrication and the same material history as the pipe itself. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Engineering Fracture Mechanics",
title = "Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis",
volume = "175",
pages = "247-261",
doi = "10.1016/j.engfracmech.2017.01.022"
}

Musraty, W., Međo, B., Gubeljak, N., Likeb, A., Cvijović-Alagić, I., Sedmak, A. S.,& Rakin, M. P.. (2017). Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis. in Engineering Fracture Mechanics, 175, 247-261.
https://doi.org/10.1016/j.engfracmech.2017.01.022

Musraty W, Međo B, Gubeljak N, Likeb A, Cvijović-Alagić I, Sedmak AS, Rakin MP. Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis. in Engineering Fracture Mechanics. 2017;175:247-261.
doi:10.1016/j.engfracmech.2017.01.022 .

Musraty, Walid, Međo, Bojan, Gubeljak, Nenad, Likeb, Andrej, Cvijović-Alagić, Ivana, Sedmak, Aleksandar S., Rakin, Marko P., "Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis" in Engineering Fracture Mechanics, 175 (2017):247-261,
https://doi.org/10.1016/j.engfracmech.2017.01.022 . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Milovanović, Dubravka S.
AU  - Siketic, Z.
AU  - Jaksic, M.
AU  - Kovač, Janez
AU  - Gaković, Biljana M.
AU  - Milosavljević, Momir
AU  - Trtica, Milan
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6932
AB  - In this work we have studied the influence of laser modification on the composition and structure of tungsten titanium (WTi) thin films, deposited on n-type (100) silicon wafers. After deposition, the samples were multi-pulse laser irradiated in a nitrogen, oxygen, and helium ambient. The composition of the WTi/Si sample was determined by Elastic Recoil Detection Analysis (ERDA). Surface morphology was monitored by Atomic Force Microscopy (AFM). In the experiment, typical laser output parameters were: wavelength 1064 nm, pulse duration 150 ps, and laser pulse energy 30 mJ. Surface concentrations of W and Ti, as well as the concentration of gas components nitrogen and oxygen were determinated before and after the action of laser radiation in different ambient conditions. The contents of W and Ti decreased after irradiation due to adsorbed gases from the surrounding atmosphere. After surface irradiation in the inert ambient (He), the concentrations of the components were not significantly changed. In other cases, oxygen was the dominant component at the surface, probably due to the high affinity of thin film components. Also, the morphological changes occurred at the surface of WTi, as an increase in the surface roughness and formation of the granular structures are a result of laser-induced surface oxidation and recrystallization.
T2  - Applied Physics. B: Lasers and Optics
T1  - Chemical and structural modifications of laser treated WTi surfaces at different ambient conditions
VL  - 105
IS  - 3
SP  - 593
EP  - 597
DO  - 10.1007/s00340-011-4505-4
ER  - 

@article{
author = "Petrović, Suzana and Peruško, Davor and Milovanović, Dubravka S. and Siketic, Z. and Jaksic, M. and Kovač, Janez and Gaković, Biljana M. and Milosavljević, Momir and Trtica, Milan",
year = "2011",
abstract = "In this work we have studied the influence of laser modification on the composition and structure of tungsten titanium (WTi) thin films, deposited on n-type (100) silicon wafers. After deposition, the samples were multi-pulse laser irradiated in a nitrogen, oxygen, and helium ambient. The composition of the WTi/Si sample was determined by Elastic Recoil Detection Analysis (ERDA). Surface morphology was monitored by Atomic Force Microscopy (AFM). In the experiment, typical laser output parameters were: wavelength 1064 nm, pulse duration 150 ps, and laser pulse energy 30 mJ. Surface concentrations of W and Ti, as well as the concentration of gas components nitrogen and oxygen were determinated before and after the action of laser radiation in different ambient conditions. The contents of W and Ti decreased after irradiation due to adsorbed gases from the surrounding atmosphere. After surface irradiation in the inert ambient (He), the concentrations of the components were not significantly changed. In other cases, oxygen was the dominant component at the surface, probably due to the high affinity of thin film components. Also, the morphological changes occurred at the surface of WTi, as an increase in the surface roughness and formation of the granular structures are a result of laser-induced surface oxidation and recrystallization.",
journal = "Applied Physics. B: Lasers and Optics",
title = "Chemical and structural modifications of laser treated WTi surfaces at different ambient conditions",
volume = "105",
number = "3",
pages = "593-597",
doi = "10.1007/s00340-011-4505-4"
}

Petrović, S., Peruško, D., Milovanović, D. S., Siketic, Z., Jaksic, M., Kovač, J., Gaković, B. M., Milosavljević, M.,& Trtica, M.. (2011). Chemical and structural modifications of laser treated WTi surfaces at different ambient conditions. in Applied Physics. B: Lasers and Optics, 105(3), 593-597.
https://doi.org/10.1007/s00340-011-4505-4

Petrović S, Peruško D, Milovanović DS, Siketic Z, Jaksic M, Kovač J, Gaković BM, Milosavljević M, Trtica M. Chemical and structural modifications of laser treated WTi surfaces at different ambient conditions. in Applied Physics. B: Lasers and Optics. 2011;105(3):593-597.
doi:10.1007/s00340-011-4505-4 .

Petrović, Suzana, Peruško, Davor, Milovanović, Dubravka S., Siketic, Z., Jaksic, M., Kovač, Janez, Gaković, Biljana M., Milosavljević, Momir, Trtica, Milan, "Chemical and structural modifications of laser treated WTi surfaces at different ambient conditions" in Applied Physics. B: Lasers and Optics, 105, no. 3 (2011):593-597,
https://doi.org/10.1007/s00340-011-4505-4 . .