浓度和边界条件对纤维素胆甾相聚集态结构的影响  

Effects of Concentration and Boundary Conditions on Condensed State of Cholesteric Liquid Crystalline Cellulose

作　　者：王林格[1] 黄勇[1] 

机构地区：[1]中国科学院广州化学研究所纤维素化学开放研究实验室,广州510650

出　　处：《纤维素科学与技术》2000年第3期1-7,共7页Journal of Cellulose Science and Technology

基　　金：国家基础性重大关键项目 (攀登计划 )-高分子凝聚态基本物理问题研究和国家自然科学基金项目资助课题

摘　　要：对不同边界取向条件和不同浓度下乙基氰乙基纤维素 /二氯乙酸溶液形成的胆甾型液晶相的聚集态结构及其光学性能进行了研究和讨论。在胆甾相与各向同性相共存时 ,随着浓度的变化 ,溶液会呈现出多种织构形态。在边界垂直取向条件下 ,液晶分子趋向于焦锥排列 ,在边界平行取向条件下 ,液晶分子趋向于平面排列。另外 。Effects of concentration and boundary conditions on cholesteric liquid crystalline condensed state structure and optical property of ethyl-cyanoethyl cellulose were investigated.When cholesteric phase and isotropy phase were coexistent,the solution showed multi-texture behavior with variation of concentration.With homeotropic anchoring boundary condition,molecules of cholesteric phase tend to aggregate with focal-conics arrangement.With homogeneous anchoring boundary condition,molecules of cholesteric phase tended to aggregate with planar arrangement.In addition,surface tension of interphase can restrain the effects of boundary anchoring on the cholesteric condensed state structure.

关 键 词：乙基氰乙基纤维素 胆甾相 边界条件 聚集态 

分 类 号：TQ352.1[化学工程]