Synthesis and characterization of liquid crystal polyesters with   T-shaped two-dimensional mesogenic units (III)

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	Synthesis and characterization of liquid crystal polyesters with T-shaped two-dimensional mesogenic units (III)
	Li, ZF ; Li, L ; Zhang, SY ; Zheng, SJ ; Cao, SK ; Zhou, QF
刊名	高分子科学英文版
	1999
关键词	T-shaped two-dimensional mesogenic units liquid crystal polyester synthesis and characterization
英文摘要	A new series of liquid crystal polyesters with T-shaped two-dimensional mesogenic units were synthesized by melt polycondensation of the diacetates of 2-(4'-alkoxy -phenyl)-hydroquinones with 4,4'-alkylenedioxydibenzoic acid. The polymers were characterized by using polarized microscopy, DSC and X-ray diffraction. It was realized that all the polymers have nematic thermotropic liquid crystalline characteristics. The melting temperature (T-m) and isotropization temperature (T-i) of the polymers change regularly with varying lengths of the alkoxy side group;Ind the: length of the alkylene group in the main chain in company with an even-odd effect. Thr mesophase temperature range also varies regularly with the polymer structure. It is shown that the mesophase range has been widened.; Polymer Science; SCI(E); 中国科学引文数据库(CSCD); 5; ARTICLE; 5; 483-490; 17
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/389731]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, ZF,Li, L,Zhang, SY,et al. Synthesis and characterization of liquid crystal polyesters with T-shaped two-dimensional mesogenic units (III)[J]. 高分子科学英文版,1999.
APA	Li, ZF,Li, L,Zhang, SY,Zheng, SJ,Cao, SK,&Zhou, QF.(1999).Synthesis and characterization of liquid crystal polyesters with T-shaped two-dimensional mesogenic units (III).高分子科学英文版.
MLA	Li, ZF,et al."Synthesis and characterization of liquid crystal polyesters with T-shaped two-dimensional mesogenic units (III)".高分子科学英文版 (1999).