乙基氰乙基纤维素/甲基丙烯酸酯液晶溶液的研究  

STUDY ON THE LIQUID CRYSTALLINE SOLUTIONS OF ETHYL-CYANOETHYL CELLULOSE/METHACRYLATES

作　　者：张光华 黄勇 杨玉芹 刘倩 林瑛 

出　　处：《广州化学》1990年第1期15-18,共4页Guangzhou Chemistry

摘　　要：乙基氰乙基纤维素/甲基丙烯酸酯在一定的浓度下可以形成溶致性液晶,从液晶相的双折射纹理结沟和小角光散射的Hν散射花样可知这类液晶是胆甾型的。同时,在液晶相开始出现时及各向同性相完全消失时的临界浓度C_1和C_2均随着甲基丙烯酸酯的酯基链增长而降低。Ethyl-cyanoethyl cellulose could form lyotropic liquid crystals in many organic solvents. The liquid crystalline solutions of ethyl cyano-ethyl cellulose/methacrylates were studied by means of Abbe' refracto meter, polarized light microscope, small angle scattering. For the ethyl-cyanothyl cellulose/methyl methacrylate solution, the critical concen-trations of C_1·is about 0.380g/g and C_2·is about 0.435g/g, for the ethyl cyanoethyl cellulose/methyl solution, C_1·is about 0.355g/g and C_2·is about 0.420g/g, and for the ethyl cyanoethyl cellulose/butyl methacrylate solution, C_1·is about 0.335g/g and C_2·is about 0.405g/g. polarized light micrographs and SALS Hν patterns indicated that the liquid crystals of ethyl-cyanoethyl cellulose/methacrylates were cholesteric.

关 键 词：液晶 ECEC MMA MEA MBA 

分 类 号：O753.2[理学—晶体学]