高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (7): 1085.

• 论文 • 上一篇    下一篇

胆甾液晶/聚合物多组分体系的结构与性能研究(Ⅲ)─ChN/poly(MMA-CO-BMA)混合体系的形态结构

李安东, 宋襄玉, 周恩乐   

  1. 中国科学院长春应用化学研究所高分子物理开放实验室, 长春, 130022
  • 收稿日期:1993-06-17 修回日期:1993-11-01 出版日期:1994-07-24 发布日期:1994-07-24
  • 通讯作者: 周恩乐.
  • 作者简介:李安东,男,33岁,硕士,讲师.
  • 基金资助:

    国家自然科学基金

Studies on Structure and Properties of Polymer Dispersed Cholesteric Liquid Crystals(Ⅲ)─The Morphology of Poly(MMA-CO-BMA) and ChN Mixtures

LI An-Dong, SONG Xiang-Yu, ZHOU En-Le   

  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022
  • Received:1993-06-17 Revised:1993-11-01 Online:1994-07-24 Published:1994-07-24

摘要: 应用X射线衍射、偏光显微镜及电子显微镜研究了胆甾液晶与甲基丙烯酸甲酯(MMA)─甲基丙烯酸丁酯(BMA)无规共聚物共混体系的形态结构。研究了体系的结晶态及液晶态的行为和共聚物含量及组成对光学织构的影响。

关键词: 胆甾液晶, 无规共聚物, 形态结构, 光学织构

Abstract: The morphology of mixtures of poly(MMA-CO-BMA) with different composition and cholesteryl nonanoated(ChN)have been studied by X-ray diffraction, DSC, polarizing microscope and scanning electron microscopy.Three exothermic peaks were presented in the cooling DSCthermogram of mixtures, corresponding to the Ti-ch, Tch-s and Ts-k transitions.The optical microscope investigations of mesophases obtained by cooling the isotropic liquid of mixtures are shown that, the mixtures within a wider range of composition can form both Cholesteric and Smactic Aphase.The spherulite structure has been found at the temperature below Ts-k, for the mixtures with ChNcontent higher than 40%.The effects of the composition and concentration of copolymers on the crystalline and liquid crystalline textures have been discussed in detail.

Key words: Cholesterin liquid crystal, Polymer dispersed, Morphology, Optical texture

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