刚性链侧链型液晶高分子合成与研究

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (2): 308.

刚性链侧链型液晶高分子合成与研究

李自法¹, 郭银忠¹, 张春晓¹, 周其凤²

1. 郑州大学化学系, 郑州, 450052;
2. 北京大学化学系

收稿日期:1993-02-09 修回日期:1993-11-27 出版日期:1994-02-24 发布日期:1994-02-24
通讯作者: 李自法,男,57岁,教授.
作者简介:李自法,男,57岁,教授.
基金资助:
国家自然科学基金

Synthesis and Studies of Liquid Crystal Polymer with Rigid Side Chain

LI Zi-Fa¹, GUO Yin-Zhong¹, ZHANG Chun-Xiao¹, ZHOU Qi-Feng²

1. Department of Chemistry, Zhengzhou University, Zhengzhou, 450052;
2. Department of Chemistry, Peking University

Received:1993-02-09 Revised:1993-11-27 Online:1994-02-24 Published:1994-02-24

摘要/Abstract

摘要： 以自由基聚合方法,合成了一系列含有3个苯环通过酯键相联的液晶性单体及其聚合物。这类刚性液晶基元不通过柔性间隔基而直接竖挂在聚丙烯酸酯大分子主链上,具有很高的Tg,DSC及偏光显微镜结果表明,所有的单体和聚合物均为向列型热致性液晶。

关键词: 液晶型单体, 刚性链侧链型液晶高分子, 4-[4'-(对烷氧基-苯甲酰氧基)-苯甲酰氧基]-苯基丙烯酸酯

Abstract: A new series of mesogenic monomers and polymers with three benzene rings linked by ester bond are synthesized for the first time by the means of radical polymerization.In this type of liquid crystal polymers, rigid mesogens are directly fixed onto the main chain backbone of polyacrylic ester vertically without flexible spacer, The glass transition temperatures of these polymers are very high and indicate the high rigidities of these polymers.The liquid crystalline behaviour of the monomers and polymers are characterized by DSC, polarized optical microscopy and X-ray diffraction.It is found that all monomers and polymers are nematic thermotropic liquid crystals.Therefore, they represented a new kind of rigid side chain liquid crystal polymers.

Key words: Mesogenic monomer, Rigid side chain liquid crystal polymers, 4-[4'-(p-Alkoxylbenzoxy)-benzoxy]-phenyl-acrylate

TrendMD:

李自法, 郭银忠, 张春晓, 周其凤. 刚性链侧链型液晶高分子合成与研究. 高等学校化学学报, 1994, 15(2): 308.

LI Zi-Fa, GUO Yin-Zhong, ZHANG Chun-Xiao, ZHOU Qi-Feng . Synthesis and Studies of Liquid Crystal Polymer with Rigid Side Chain. Chem. J. Chinese Universities, 1994, 15(2): 308.