片晶装饰技术研究高分子液晶向列相的向错

OBSERVATION OF DISCLINATION IN NEMATIC MESOPHASE OF LIQUID CRYSTALLINE POLYMERS BY LAMELLAR DECORATION

采用片晶装饰技术和四氧化钉染色技术相结合在透射电镜下研究了热致性高分子液晶的向错结构，在一种热致性聚芳酯的冻结液晶态中观察到了向错强度分别为Ｓ＝±１／２和Ｓ＝±１的两类共六种的向错形态，以及每个向错与其相邻向错之间相互联结和相互作用的状态．

The combined edniques of lamellar decoration and ruthenium tetraoxide staining have been uest to reveal molecular director orientation around the disclination in the frozen nematic state of polymers by transndssion electron microscopy. All six discllnations with strength S=±1/2 and S=±1 in the nematic mesophase of a thermotropic aromatic copolyester have been observed. It is also observed that every disclination, interacts and is connectal with its neighbouring disclination to form in pairs of the disclination.