Orientation-induced changes in microstructure and crystallinity of different PEs
Апстракт
This paper studies the influence of orientation on polyethylenes (PEs) with different structural peculiarities in accordance with Peterlin’s molecular model of drawing. 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. In order to investigate orientation-induced changes in morphology, surface microstructures were analyzed by optical (OM) and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) measurements were used to determine changes in crystallinity. The presented results reveal a two-stage evolution of crystallinity (of pristine PEs) due to orientation; the first stage is characterized by a significant increase in crystallinity, following saturation occurs with a further increase of the draw ratio at the second stage. The critical draw ratio, which separates these two stages ...and corresponds to the transformation from the initial to the developed fibrillar structure, was influenced by the structural peculiarities of each PE.
Извор:
YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts, 2007, 85-85Издавач:
- Belgrade : Institute of Technical Sciences of SASA
Напомена:
- YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : programme and the book of abstracts; September 10-14, 2007; Herceg Novi, Montenegro
Колекције
Институција/група
VinčaTY - CONF AU - Miličević, Dejan AU - Leskovac, Andreja AU - Mitrić, Miodrag AU - Suljovrujić, Edin PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/11701 AB - This paper studies the influence of orientation on polyethylenes (PEs) with different structural peculiarities in accordance with Peterlin’s molecular model of drawing. 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. In order to investigate orientation-induced changes in morphology, surface microstructures were analyzed by optical (OM) and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) measurements were used to determine changes in crystallinity. The presented results reveal a two-stage evolution of crystallinity (of pristine PEs) due to orientation; the first stage is characterized by a significant increase in crystallinity, following saturation occurs with a further increase of the draw ratio at the second stage. The critical draw ratio, which separates these two stages and corresponds to the transformation from the initial to the developed fibrillar structure, was influenced by the structural peculiarities of each PE. PB - Belgrade : Institute of Technical Sciences of SASA C3 - YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts T1 - Orientation-induced changes in microstructure and crystallinity of different PEs SP - 85 EP - 85 UR - https://hdl.handle.net/21.15107/rcub_vinar_11701 ER -
@conference{ author = "Miličević, Dejan and Leskovac, Andreja and Mitrić, Miodrag and Suljovrujić, Edin", year = "2007", abstract = "This paper studies the influence of orientation on polyethylenes (PEs) with different structural peculiarities in accordance with Peterlin’s molecular model of drawing. 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. In order to investigate orientation-induced changes in morphology, surface microstructures were analyzed by optical (OM) and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) measurements were used to determine changes in crystallinity. The presented results reveal a two-stage evolution of crystallinity (of pristine PEs) due to orientation; the first stage is characterized by a significant increase in crystallinity, following saturation occurs with a further increase of the draw ratio at the second stage. The critical draw ratio, which separates these two stages and corresponds to the transformation from the initial to the developed fibrillar structure, was influenced by the structural peculiarities of each PE.", publisher = "Belgrade : Institute of Technical Sciences of SASA", journal = "YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts", title = "Orientation-induced changes in microstructure and crystallinity of different PEs", pages = "85-85", url = "https://hdl.handle.net/21.15107/rcub_vinar_11701" }
Miličević, D., Leskovac, A., Mitrić, M.,& Suljovrujić, E.. (2007). Orientation-induced changes in microstructure and crystallinity of different PEs. in YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts Belgrade : Institute of Technical Sciences of SASA., 85-85. https://hdl.handle.net/21.15107/rcub_vinar_11701
Miličević D, Leskovac A, Mitrić M, Suljovrujić E. Orientation-induced changes in microstructure and crystallinity of different PEs. in YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts. 2007;:85-85. https://hdl.handle.net/21.15107/rcub_vinar_11701 .
Miličević, Dejan, Leskovac, Andreja, Mitrić, Miodrag, Suljovrujić, Edin, "Orientation-induced changes in microstructure and crystallinity of different PEs" in YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts (2007):85-85, https://hdl.handle.net/21.15107/rcub_vinar_11701 .