高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (11): 1723.

• 论文 • 上一篇    下一篇

新的含T-型二维液晶基元的液晶高分子的合成

李自法1, 陈志军1, 张淑媛1, 王经武1, 周其凤2   

  1. 1. 郑州大学材料工程系, 郑州, 450052;
    2. 北京大学化学系
  • 收稿日期:1993-11-27 修回日期:1994-04-20 出版日期:1994-11-24 发布日期:1994-11-24
  • 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 of New Liquid Crystal Polymers with T-Shaped Two-Dimensional Mesogenic Units

LI Zi-Fa1, CHEN Zhi-Jun1, ZHANG Shu-Yuan1, WANG Jing-Wu1, ZHOU Qi-Feng2   

  1. 1. Department of Material Engineering, Zhengzhou University, Zhengzhou, 450052;
    2. Department of Chemistry, Peking University
  • Received:1993-11-27 Revised:1994-04-20 Online:1994-11-24 Published:1994-11-24

摘要: 采用低温溶液聚合方法,以N-(2,5-二羟基苯)亚甲基-4-取代苯胺和不同结构的二酰氯为单体,合成了两类新的高分子。聚合物的液晶行为用DSC、偏光显微镜和X射线衍射进行了表征,发现其中一类为向列型热致液晶高分子,另一类则无液晶性。随单体结构的改变,聚合物的特性粘数、熔点(Tm)和液晶态的清亮点(Ti)均呈现规律性变化。

关键词: 液晶高分子, T-型二维液晶基元, 高分子的合成

Abstract: Two new kinds of polymers were synthesized by low temperature solution polycondensation by using N-2, 5-dihydroxy benzylidene-4-substitued aniline and diacid chloride with different structures as the monomer. The liquid-crystalline behavior of the polymers was characterized by DSC, polarizing microscopy with a heatlng stage and X-ray diffractometer.It was found that one kind of the polymers was nematic thermotropic liquid crystal polymers, and the other kind of polymers was non-liquid-crystalline. The intrinsic viscosities, Tm and Ti of the polymers changed regularly with the change of the structure of the monomers.

Key words: Liquid crystalline polymer, T-shped two-dimensional mesogens, Synthesis of polymer

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