The influence of orientation on the radiation-induced crosslinking/oxidative behavior of different PEs
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Miličević, Dejan S.Trifunovic, S.
Popović, Milan
Milic, T. Vukašinović
Suljovrujić, Edin H.
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This paper studies the influence of orientation and structural peculiarities on the radiation-induced oxidation/crosslinking changes in different polyethylenes (PEs). For this reason, low density polyethylene (LDPE), linear low density polyethylene (LLDPE) and high density polyethylene (HDPE) were oriented via solid-state stretching at an elevated temperature. Later on, oriented samples were gamma-irradiated in air to various absorbed doses (up to 700 kGy). In order to investigate orientation- and radiation-induced changes in morphology, surface microstructures were analyzed by optical (OM) and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC), IR spectroscopy and gel measurements were used to determine changes in crystallinity, oxidative degradation and degree of network formation, respectively. Conclusions derived according to these methods were compared. The differences in morphology, crystallinity, oxidation and gel behavior are caused primarily by the str...uctural peculiarities of different types of PEs, the heterogeneous nature of radiation effects in semicrystalline polymers and, in the case of oriented samples, by the molecular orientation as well. The presented results reveal complicate crosslinking behavior with orientation while increase/decrease in crystallinity/oxidation with draw ratio was clearly evident. (C) 2007 Elsevier B.V. All rights reserved.
Keywords:
LDPE / LLDPE / HDPE / irradiation / orientation / crosslinkingSource:
Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2007, 260, 2, 603-612
DOI: 10.1016/j.nimb.2007.04.157
ISSN: 0168-583X; 1872-9584
WoS: 000248244900017
Scopus: 2-s2.0-34547620652
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VinčaTY - JOUR AU - Miličević, Dejan S. AU - Trifunovic, S. AU - Popović, Milan AU - Milic, T. Vukašinović AU - Suljovrujić, Edin H. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3229 AB - This paper studies the influence of orientation and structural peculiarities on the radiation-induced oxidation/crosslinking changes in different polyethylenes (PEs). For this reason, low density polyethylene (LDPE), linear low density polyethylene (LLDPE) and high density polyethylene (HDPE) were oriented via solid-state stretching at an elevated temperature. Later on, oriented samples were gamma-irradiated in air to various absorbed doses (up to 700 kGy). In order to investigate orientation- and radiation-induced changes in morphology, surface microstructures were analyzed by optical (OM) and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC), IR spectroscopy and gel measurements were used to determine changes in crystallinity, oxidative degradation and degree of network formation, respectively. Conclusions derived according to these methods were compared. The differences in morphology, crystallinity, oxidation and gel behavior are caused primarily by the structural peculiarities of different types of PEs, the heterogeneous nature of radiation effects in semicrystalline polymers and, in the case of oriented samples, by the molecular orientation as well. The presented results reveal complicate crosslinking behavior with orientation while increase/decrease in crystallinity/oxidation with draw ratio was clearly evident. (C) 2007 Elsevier B.V. All rights reserved. T2 - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms T1 - The influence of orientation on the radiation-induced crosslinking/oxidative behavior of different PEs VL - 260 IS - 2 SP - 603 EP - 612 DO - 10.1016/j.nimb.2007.04.157 ER -
@article{ author = "Miličević, Dejan S. and Trifunovic, S. and Popović, Milan and Milic, T. Vukašinović and Suljovrujić, Edin H.", year = "2007", abstract = "This paper studies the influence of orientation and structural peculiarities on the radiation-induced oxidation/crosslinking changes in different polyethylenes (PEs). For this reason, low density polyethylene (LDPE), linear low density polyethylene (LLDPE) and high density polyethylene (HDPE) were oriented via solid-state stretching at an elevated temperature. Later on, oriented samples were gamma-irradiated in air to various absorbed doses (up to 700 kGy). In order to investigate orientation- and radiation-induced changes in morphology, surface microstructures were analyzed by optical (OM) and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC), IR spectroscopy and gel measurements were used to determine changes in crystallinity, oxidative degradation and degree of network formation, respectively. Conclusions derived according to these methods were compared. The differences in morphology, crystallinity, oxidation and gel behavior are caused primarily by the structural peculiarities of different types of PEs, the heterogeneous nature of radiation effects in semicrystalline polymers and, in the case of oriented samples, by the molecular orientation as well. The presented results reveal complicate crosslinking behavior with orientation while increase/decrease in crystallinity/oxidation with draw ratio was clearly evident. (C) 2007 Elsevier B.V. All rights reserved.", journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms", title = "The influence of orientation on the radiation-induced crosslinking/oxidative behavior of different PEs", volume = "260", number = "2", pages = "603-612", doi = "10.1016/j.nimb.2007.04.157" }
Miličević, D. S., Trifunovic, S., Popović, M., Milic, T. V.,& Suljovrujić, E. H.. (2007). The influence of orientation on the radiation-induced crosslinking/oxidative behavior of different PEs. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 260(2), 603-612. https://doi.org/10.1016/j.nimb.2007.04.157
Miličević DS, Trifunovic S, Popović M, Milic TV, Suljovrujić EH. The influence of orientation on the radiation-induced crosslinking/oxidative behavior of different PEs. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2007;260(2):603-612. doi:10.1016/j.nimb.2007.04.157 .
Miličević, Dejan S., Trifunovic, S., Popović, Milan, Milic, T. Vukašinović, Suljovrujić, Edin H., "The influence of orientation on the radiation-induced crosslinking/oxidative behavior of different PEs" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 260, no. 2 (2007):603-612, https://doi.org/10.1016/j.nimb.2007.04.157 . .