The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios

To study the effect of the melt-draw ratios (MDRs) on the structure and properties of the poly(4-methyl-1-pentene) (PMP) film, the crystal structure evolution and mechanical properties of the PMP film with an MDR of 40–160 were characterized using scanning electron microscopy, differential scanning...

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Autores principales:	Yin Liangdong, Xu Ruijie, Xie Jiayi, Lei Caihong, Cai Qi
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	poly(4-methyl-1-pentene) hard elastic film crystallization uniaxial deformation tie chain Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/8436b67012ff4c9aa739af1a26226fb3
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id	oai:doaj.org-article:8436b67012ff4c9aa739af1a26226fb3
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spelling	oai:doaj.org-article:8436b67012ff4c9aa739af1a26226fb32021-12-05T14:10:48ZThe crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios1618-722910.1515/epoly-2021-0084https://doaj.org/article/8436b67012ff4c9aa739af1a26226fb32021-11-01T00:00:00Zhttps://doi.org/10.1515/epoly-2021-0084https://doaj.org/toc/1618-7229To study the effect of the melt-draw ratios (MDRs) on the structure and properties of the poly(4-methyl-1-pentene) (PMP) film, the crystal structure evolution and mechanical properties of the PMP film with an MDR of 40–160 were characterized using scanning electron microscopy, differential scanning calorimetry, wide-angle X-ray scattering, and mechanical test. The results show that with the increase of MDR, the spherulite to platelet transition occurs in the PMP. When the MDR exceeds 100, a parallel platelet structure appears. Due to the side chains, with the increase of MDR, the distribution density of tie chains in PMP decreases and the entanglement density of amorphous chains increases. This leads to a decrease in the yield strength and the strain hardening becomes noticeable. Although the crystalline network becomes loose due to the decrease in tie chain density, the elastic recovery (ER) value still increases with the increase of MDR. This result indicates that the entanglement density of the amorphous region greatly contributes to the ER.Yin LiangdongXu RuijieXie JiayiLei CaihongCai QiDe Gruyterarticlepoly(4-methyl-1-pentene)hard elastic filmcrystallizationuniaxial deformationtie chainPolymers and polymer manufactureTP1080-1185ENe-Polymers, Vol 21, Iss 1, Pp 930-938 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	poly(4-methyl-1-pentene) hard elastic film crystallization uniaxial deformation tie chain Polymers and polymer manufacture TP1080-1185
spellingShingle	poly(4-methyl-1-pentene) hard elastic film crystallization uniaxial deformation tie chain Polymers and polymer manufacture TP1080-1185 Yin Liangdong Xu Ruijie Xie Jiayi Lei Caihong Cai Qi The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
description	To study the effect of the melt-draw ratios (MDRs) on the structure and properties of the poly(4-methyl-1-pentene) (PMP) film, the crystal structure evolution and mechanical properties of the PMP film with an MDR of 40–160 were characterized using scanning electron microscopy, differential scanning calorimetry, wide-angle X-ray scattering, and mechanical test. The results show that with the increase of MDR, the spherulite to platelet transition occurs in the PMP. When the MDR exceeds 100, a parallel platelet structure appears. Due to the side chains, with the increase of MDR, the distribution density of tie chains in PMP decreases and the entanglement density of amorphous chains increases. This leads to a decrease in the yield strength and the strain hardening becomes noticeable. Although the crystalline network becomes loose due to the decrease in tie chain density, the elastic recovery (ER) value still increases with the increase of MDR. This result indicates that the entanglement density of the amorphous region greatly contributes to the ER.
format	article
author	Yin Liangdong Xu Ruijie Xie Jiayi Lei Caihong Cai Qi
author_facet	Yin Liangdong Xu Ruijie Xie Jiayi Lei Caihong Cai Qi
author_sort	Yin Liangdong
title	The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
title_short	The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
title_full	The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
title_fullStr	The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
title_full_unstemmed	The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
title_sort	crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/8436b67012ff4c9aa739af1a26226fb3
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The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios

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