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通过测试光延迟研究了聚酰亚胺ＬＢ膜的光学各向异性，分析了在ＬＢ膜成膜过程中成膜分子的流动取向特性，并研究了液晶的表面锚定能，分析了ＬＢ膜上液晶的取向机制．聚酰亚胺ＬＢ膜的链段的取向程度较强摩擦情形的聚酰亚胺表面的链段取向要差．强摩擦的聚酰亚胺会比聚酰亚胺ＬＢ膜具有更好的排列液晶分子的能力．ＬＢ膜的流动取向模式使得聚酰亚胺成膜分子沿拉伸方向形成一定的有序排列，并诱导液晶分子定向排列，液晶和聚合物分子相互作用是液晶表面排列的主要动力
The optical anisotropy of polyimide LB films was studied by measuring the retardation of light and the flow characteristics of the film-forming molecules during the film formation were analyzed. The anchoring energy of liquid crystal was also studied. Liquid crystal orientation mechanism. The orientation of the segments of the polyimide LB film is relatively poor, and the segment orientation of the polyimide surface in the case of rubbing is inferior. Strong rubbing polyimide than polyimide LB film has better ability to align liquid crystal molecules. The flow pattern of the LB film makes the polyimide film-forming molecules form a certain ordered arrangement along the stretching direction and induces the alignment of the liquid crystal molecules. The interaction between the liquid crystal and the polymer molecules is the main power of the liquid crystal surface arrangement