ECEC/AA液晶溶液取向态织构及其自由基聚合  

TEXTURES AND PHOTOPOLYMERIZATION OF THE ORIENTED MESOMORPHIC SOLUTIONS OF ECEC/AA

作　　者：蒋苏洪 黄勇 曾君 

出　　处：《广州化学》1991年第4期20-28,共9页Guangzhou Chemistry

基　　金：国家自然科学基金;广东省科学基金

摘　　要：利用光学显微镜和小角光散射等方法研究了乙基氰乙基纤维素(ECEC)/丙烯酸(AA)取向液晶态织构。在切应力作用下ECEC/AA液晶溶液形成带状结构,其中大分子链沿切应力方向呈锯齿形取向,溶液浓度越高,取向液晶溶液中大分子链有序性越高,带状织构中的条带愈窄。通过紫外光引发聚合方式获得了保持取向液晶态中带状织构的复合物膜。Textures of the oriented mesomorphic solutions of ethyl cyanoethyl cellulose (CECE)/acrylic acid(AA) were studied by polarized light microscopy and small angle light scattering. If the mesomorphic solutions were sheared, they could form the band-like texture in which the macromolecular chains oriented along the shear direction in a zigzag way. with the increasing concentration, the oriented mesomorphic solutions became more ordered and the width of the bands decreased. The CECE/AA composite membranes were obtained by photopolymerization of the oriented mesomorphic solutions.

关 键 词：ECEC/AA 液晶 取向 自由基聚合 

分 类 号：O753.2[理学—晶体学]