乙基纤维素/二氯乙酸液晶溶液的织构研究——指纹型双折射纹理的畸变分析

STUDY ON THE TEXTURE OF ETHYLCELLULOSE/DICHLOROACETIC ACID LIQUID CRYSTAL SOLUTION——THE DISTORTION ANALYSIS OF FINGERPRINT TEXTURE

利用偏光显微镜研究乙基纤维素/二氯乙酸(EC/DCA)胆甾相液晶的织构,发现在很宽的浓度范围内,EC/DCA液晶溶液都显现出指纹型双折射纹理。考察了EC/DCA液晶溶液包含的几种结构缺陷,即边界畸变、λ畸变、τ畸变。通过畸变的显现,分析了胆甾面的排列方式及其结构稳定性。

A polarized light microscope is used to examine the texture of ethylcellulose/dichloroacetic acid (EC/DCA) cholesteric liquid crystal.In a wide range of concentrations EC/DCA liquid crystal solution exhibits typical fingerprint textures. Several kinds of structural defects: edge distortion, λ-distortion. and τ-distortion, involved in the EC/DCA liquid crystal solution were studied Through the indications of these distortions we analysed the arrangement of cholesteric plane and the structural stability of cholesteric liquid crystals.