高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (11): 1817.

• 研究快报 • 上一篇    下一篇

不同主链"甲壳型"高分子的合成及其液晶性研究

糜七定, 张海良, 周其凤   

  1. 北京大学化学与分子工程学院高分子系, 北京 100871
  • 收稿日期:1999-06-07 出版日期:1999-11-24 发布日期:1999-11-24
  • 通讯作者: 周其凤
  • 作者简介:糜七定,男,31岁,博士后.
  • 基金资助:

    国家自然科学基金(批准号:59873001);中国博士后科学基金

Synthesis and Liquid Crystalline Properties of Mesogen-Jacketed Polymers with Different Polymer Backbone

MI Qi-Ding, ZHANG Hai-Liang, ZHOU Qi-Feng   

  1. Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • Received:1999-06-07 Online:1999-11-24 Published:1999-11-24

关键词: 对苯二甲酸-二(对甲氧基苯酯), ", 甲壳型", 液晶高分子, 液晶性, 主链

Abstract: Two monomers of 2,5-bis[(p-methoxyphenoxy)carbonyl]benzyl acrylate and 2,5-bis[(p-methoxyphenoxy)carbonyl] benzyl methacrylate and their corresponding polymers were successfully synthesized. The mesomorphic behavior of both polymers was examined by using differential scanning calorimetry(DSC) and polarized optical microscopy(POM). It was found that both polymers are noncrystalline with a glass transition temperature of 67.1 ℃ for poly-{2,5-bis[(p-methoxyphenoxy)carbonyl]benzyl acrylate} and 95.1 ℃ for poly-{2,5-bis[(p-methoxyphenoxy)carbonyl]benzyl methacrylate}, above which the former can form liquid crystalline state and the clearing temperature is 97.8 ℃ while the latter can not. This indicates that main chain rigidity will affect the liquid crystallinity of mesogen-jacketed polymers.

Key words: Di-p-methoxyphenyl terephthalate, Mesogen-jacketed polymers, Liquid crystallinity, Main-chain

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