高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (6): 984.

• 论文 • 上一篇    下一篇

具有液晶性新型聚芳醚酮的合成与表征

张善举1, 郑玉斌1, 吴忠文1, 田明文2, 杨德才2   

  1. 1. 吉林大学化学系, 长春, 130023;
    2. 中国科学院长春应用化学研究所, 长春, 130022
  • 收稿日期:1997-04-03 出版日期:1998-06-24 发布日期:1998-06-24
  • 通讯作者: 张善举,男,27岁,博±研究生.
  • 作者简介:张善举,男,27岁,博±研究生.
  • 基金资助:

    国家"863"重大项目;中国科学院高分子物理开放实验室基金

The Synthesis and Characterization of the Novel Poly(aryl ether ketone)s with Liquid Crystallinity

ZHANG Shan-Ju1, ZHENG Yu-Bin1, WU Zhong-Wen1, TIAN Ming-Wen2, YANG De-Cai2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022
  • Received:1997-04-03 Online:1998-06-24 Published:1998-06-24

摘要: 通过联苯二酚(介晶基元)、取代对苯二酚(破坏结晶基元)与4,4'-二氟二苯酮的亲核取代反应合成了一系列具有液晶性的新型聚芳醚酮,采用DSC、PLM和WAXD等方法对聚合物的研究表明:联苯含量为70%时聚合物表现为向列相,联苯含量为50%时聚合物出现近晶相,在外力场作用下,向列相液晶容易形成明暗交替的条带织构.

关键词: 聚芳醚酮, 液晶聚合物, 液晶行为

Abstract: The novel poly(aryl ether ketone)s with liquid crystallinity were synthesized by nucleophilic substitution reactions of 4,4′-biphenol and substituted hydroquinone with 4,4′-difluorobenzophenone and their thermotropic liquid crystalline properties were characterized by DSC, PLMand WAXD. The copolymers containing 70% biphenol formed nematic phase while the copolymer containing 50% biphenol exhibited smectic texture. The banded textures were formed after shearing the sample in the nematic liquid crystalline state. The identification of the structures in each mesogenic phase has been carried out by combining WAXD with PLM and DSC.

Key words: Poly(aryl ether ketone), Liquid crystalline polymer, Liquid crystalline behavior

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