Epitaxial crystallization of olefin block copolymers (OBCs) on uniaxially oriented isotactic polypropylene and high-density polyethylene films

doi:10.1016/j.polymer.2011.11.062

CORC > 化学研究所 > 中国科学院化学研究所

	Epitaxial crystallization of olefin block copolymers (OBCs) on uniaxially oriented isotactic polypropylene and high-density polyethylene films
	Wen, Tao 1; Zhou, Yong 1; Liu, Guoming 1; Wang, Fosong 1; Zhang, Xiugin 1; Wang, Dujin 1; Chen, Hongyu 2; Walton, Kim 3; Marchand, Gary 3; Loos, Joachim 4,5
刊名	POLYMER
	2012-01-24
卷号	53 期号:2 页码:529-535
关键词	Epitaxy Olefin Block Copolymer Tem
ISSN号	0032-3861
DOI	10.1016/j.polymer.2011.11.062
英文摘要	The epitaxial crystallization behavior of olefin block copolymers (OBCs) on uniaxially oriented isotactic polypropylene (iPP) and high-density polyethylene (HDPE) films has been investigated by transmission electron microscopy (TEM). The crystallizable blocks of the OBCs under investigation were epitaxially nucleated by both iPP and HDPE substrates and epitaxial growth of OBC lamellae was observed. Epitaxial crystallization of the OBCs has been found for slow and fast cooling conditions from the melt which pointed to the strong interaction between the polyolefin substrates and the OBCs. However, the epitaxial morphology of the OBCs strongly depends on their octene concentration difference (Delta(C8)) between crystallizable and non-crystallizable blocks, which probably is related to the OBC segregation strength in the melt. With high Delta(C8) the development of epitaxial crystallization of the OBC was restricted within isolated crystalline domains surrounded by the amorphous phase. In contrast, with low Delta(C8) the oriented lamellae of the OBC were distributed homogeneously on iPP but formed separated crystalline domains on HDPE, which has a stronger nucleation capability than iPP on the crystalline OBC blocks because of its similar molecular architecture. Our study points to epitaxy as another reason for the strong interaction between OBC and polyolefins which causes the advanced compatibilization behavior of OBCs when compared with conventional random copolymers. (C) 2011 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000299607400032
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/47221]
专题	中国科学院化学研究所
通讯作者	Wang, Dujin
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Dow Chem China Co Ltd, Shanghai 201203, Peoples R China 3.Dow Chem Co USA, Freeport, TX 77541 USA 4.Univ Glasgow, Kelvin Nanocharacterisat Ctr, SUPA, Glasgow G12 8QQ, Lanark, Scotland 5.Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
推荐引用方式 GB/T 7714	Wen, Tao,Zhou, Yong,Liu, Guoming,et al. Epitaxial crystallization of olefin block copolymers (OBCs) on uniaxially oriented isotactic polypropylene and high-density polyethylene films[J]. POLYMER,2012,53(2):529-535.
APA	Wen, Tao.,Zhou, Yong.,Liu, Guoming.,Wang, Fosong.,Zhang, Xiugin.,...&Loos, Joachim.(2012).Epitaxial crystallization of olefin block copolymers (OBCs) on uniaxially oriented isotactic polypropylene and high-density polyethylene films.POLYMER,53(2),529-535.
MLA	Wen, Tao,et al."Epitaxial crystallization of olefin block copolymers (OBCs) on uniaxially oriented isotactic polypropylene and high-density polyethylene films".POLYMER 53.2(2012):529-535.