Synthesis and properties of a new high-temperature liquid crystalline   thermoplastic elastomer based on mesogen-jacketed liquid crystalline   polymer

doi:10.1016/j.polymer.2016.11.043

CORC > 北京大学 > 化学与分子工程学院

	Synthesis and properties of a new high-temperature liquid crystalline thermoplastic elastomer based on mesogen-jacketed liquid crystalline polymer
	Zhang, Zhen-Yu ; Zhang, Qi-Kai ; Yu, Jian-Peng ; Wu, Yi-Xian ; Shen, Zhihao ; Fan, Xing-He
刊名	POLYMER
	2017
关键词	Liquid crystalline polymer Thermoplastic elastomer High-temperature range OPENING METATHESIS POLYMERIZATION ABA TRIBLOCK COPOLYMERS TRANSFER RADICAL POLYMERIZATION MOLECULAR-WEIGHT MECHANICAL-PROPERTIES BLOCK-COPOLYMERS PHASE-BEHAVIOR TRANSITION ARCHITECTURE DEFORMATION
DOI	10.1016/j.polymer.2016.11.043
英文摘要	In order to obtain high-temperature resistant thermoplastic elastomers (TPEs), we designed and synthesized a new kind of ABA triblock copolymer containing a mesogen-jacketed liquid crystalline polymer, poly(4'-(methoxy)-2-vinylbiphenyl-4-methyl ether) (PMVBP), as the hard blocks and polybutadiene (PB) as the soft block. PB was synthesized by ring-opening metathesis polymerization in the presence of a chain transfer agent, and PMVBP was synthesized by nitroxide-mediated radical polymerization. The glass transition temperature of the PMVBP block is 186-211 degrees C, which is much higher than that of polystyrene. More importantly, PMVBP can maintain its liquid crystallinity even when the temperature is as high as 270 degrees C, which can enhance the mechanical properties of TPEs based on PMVBP, especially at high temperatures. All the resulting PMVBP-PB-PMVBP triblock copolymer samples form lamellar microphase-separated structures after combined treatment of solvent annealing and thermal annealing. They are good candidates for TPEs with a high operating temperature of more than 200 degrees C. (C) 2016 Published by Elsevier Ltd.; National Natural Science Foundation of China [21134001]; National Basic Research Program of China (973 Program) [2011CB606004]; SCI(E); ARTICLE; 50-57; 108
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/462404]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, Zhen-Yu,Zhang, Qi-Kai,Yu, Jian-Peng,et al. Synthesis and properties of a new high-temperature liquid crystalline thermoplastic elastomer based on mesogen-jacketed liquid crystalline polymer[J]. POLYMER,2017.
APA	Zhang, Zhen-Yu,Zhang, Qi-Kai,Yu, Jian-Peng,Wu, Yi-Xian,Shen, Zhihao,&Fan, Xing-He.(2017).Synthesis and properties of a new high-temperature liquid crystalline thermoplastic elastomer based on mesogen-jacketed liquid crystalline polymer.POLYMER.
MLA	Zhang, Zhen-Yu,et al."Synthesis and properties of a new high-temperature liquid crystalline thermoplastic elastomer based on mesogen-jacketed liquid crystalline polymer".POLYMER (2017).