主链含氟聚酰亚胺液晶取向排列剂的表面性能及微观形貌  

The Surface Property and Morphology of the Polyimides Having Fluorinated Main Chains for Liquid Crystal Alignment

作　　者：张春华[1] 杨正华[1] 丁孟贤[1] 吴爱国[2] 李壮[2] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理与化学国家重点实验室 [2]中国科学院长春应用化学研究所电分析化学开放实验室

出　　处：《应用化学》2001年第7期544-547,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金重点资助项目 (5 0 0 3 3 0 10 )

摘　　要：通过改变聚酰亚胺膜中主链氟的含量 ,合成了几种高预倾角的聚酰亚胺膜 ,测定了各种膜取向前后的接触角 ,发现接触角随聚酰亚胺膜主链中氟含量的改变而改变 .在原子力显微镜下观察含氟聚酰亚胺及不含氟聚酰亚胺取向膜的微观结构 ,发现两种膜都是沿着摩擦方向有序排列 ,其中完全含氟聚酰亚胺取向膜较不含氟的聚酰亚胺取向膜更有规整性 .The liquid crystal alignment with higher pretilt angles was obtained from polyimide(PI) having fluorinated main chains. The contact angles of the PI films were found to be dependent on the fluorine content of the PI. The morphology of the rubbed PI surfaces with fluorinated and unfluorinated main chains for liquid crystal alignment was compared by observation with atomic force microscope(AFM). The results showed that the surface of the rubbed PI films have regular and narrow intervals, aligned along the rubbing direction. The fluorinated PI surfaces are superior to the unfluorinated PI surfaces in regularity.

关 键 词：主链含氟聚酰亚胺 液晶取向排列剂 表面性能 微观形貌 

分 类 号：O633.22[理学—高分子化学] O631.1[理学—化学]