胆甾液晶／聚合物多组分体系的结构与性质研究Ⅳ．ChN／Poly（MMA－co－BMA）混合体系的X－射线衍射研究

Study on Structure and Properties of Polymer Dispersed Cholesteric Liquid Crystals Ⅳ. The X-ray Diffraction of Poly(MMA-co-BMA)and Cholesteryl Nonanoate Mixtures

用Ｘ－射线衍射法详细研究了ＣｈＮ／Ｐｏｌｙ（ＭＭＡ－ｃｏ－ＢＭＡ）共混体系在胆笛（Ｃｈ）相，近晶（Ｓ）相及结晶（Ｋ）态的分子排列。并给出了将液晶态的分子排列冻结在体系中，从而实现信息存储功能的条件。

The molecular orientation of crystalline and liqtiid crystalline states of poly(MMA-co-BMA)and ChN mixtures have been sttidied by X-ray diffraction. It was shownthat the molecular orientation of smactic A liquid crystal can be frozen in the system at roomtemperature and the storage information was realized.