Shape memory effect of polyethylene nylon 6 graft copolymers

CORC > 化学研究所 > 中国科学院化学研究所

	Shape memory effect of polyethylene nylon 6 graft copolymers
	Li, FK; Chen, Y; Zhu, W; Zhang, X; Xu, M
刊名	POLYMER
	1998-12-01
卷号	39 期号:26 页码:6929-6934
关键词	Graft Copolymers Melt Blending Shape Memory Effect
ISSN号	0032-3861
英文摘要	A series of maleated polyethylene/nylon 6 blends with nylon as the dispersed phase was prepared at 230 degrees C in a batched Haake mixer, and their shape memory effect was investigated. The nylon contents of the blends are in the range from 5 to 20 wt%. The Molau testing was used to verify the in situ formation of polyethylene-g-nylon 6 graft copolymers bridged by maleic anhydride in the melt-blending process. Differential scanning calorimetry, dynamic mechanical thermal analysis and scanning electron microscopy have been used to investigate the crystallization and melting behaviour, dynamic mechanical properties and phase morphology for all the specimens. The results indicate that the maleated polyethylene/nylon 6 blend specimens are able to show good shape memory effect under normal experimental conditions. The high crystallinity of the polyethylene segments at room temperature and the formation of a network structure in these specimens are the two necessary conditions for their good shape memory effect. The nylon domains, which serve as physical crosslinks, play a predominent role in the formation of a stable network structure for the graft copolymers. The studies show that shape memory materials with thermoplastic characteristics can be prepared not only by segmented copolymers but also by graft copolymers, and the reaction processing method might be a promising and powerful technique for this purpose. (C) 1998 Elsevier Science Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000076107300027
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/74541]
专题	中国科学院化学研究所
通讯作者	Xu, M
作者单位	Chinese Acad Sci, Inst Chem, Polymer Phys Lab, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, FK,Chen, Y,Zhu, W,et al. Shape memory effect of polyethylene nylon 6 graft copolymers[J]. POLYMER,1998,39(26):6929-6934.
APA	Li, FK,Chen, Y,Zhu, W,Zhang, X,&Xu, M.(1998).Shape memory effect of polyethylene nylon 6 graft copolymers.POLYMER,39(26),6929-6934.
MLA	Li, FK,et al."Shape memory effect of polyethylene nylon 6 graft copolymers".POLYMER 39.26(1998):6929-6934.