乙基氰乙基纤维素/聚丙烯酸彩色复合物膜的研究  

(E-CE) C/PAA color composite films

作　　者：蒋苏洪[1] 黄勇[1] 沈家瑞[2] 

机构地区：[1]中国科学院广州化学研究所纤维素化学开放实验室 [2]华南理工大学高分子材料系

出　　处：《广州化学》1995年第1期36-43,共8页Guangzhou Chemistry

基　　金：国家基础性重大关键项目!高分子凝聚态基本物理问题研究;国家自然科学基金;中国科学院广州分院测试基金

摘　　要：乙基氰乙基纤维素／丙烯酸在一定的浓度范围内形成具有鲜艳色彩的胆甾型液晶体系。液晶溶液中的丙烯酸经聚合后，可以得到保持有胆甾相结构的彩色的乙基氰乙基纤维素／聚丙烯酸复合物膜。氰乙基取代度分布的宽度影响到液晶溶液和复合物膜中胆甾相反射可见光的能力和选择性。彩色的复合物膜具有较高的热稳定性，在100℃以下其色彩不随温度而改变。加入交联剂可以得到交联的彩色复合物膜，该复合物膜具有较好的耐水性。交联的复合物膜吸水后，其彩色向红色方向移动。除去水分后，又可回复到原来的色彩。未交联的复合物膜在吸水以后，表面被破坏，颜色消失。Ethyl-cyanoethyl cellulose [ (E-CE) C] /acrylic acid [AA] could form cholesteric liquidcrystalline system with rivid colours in the appropriate concentration region and (E-CE) C/polyacry1ic acid [PAA] composites with different colours could be prepared by polymerisingAA in ti1e (E-CE) C/AA liquid crystalline solution. The ability and selectivity of reflectingvisible light for (E -CE) /AA liquid crystaliine solutions and (E-CE) C/PAA compositefilrns were influenced by the polydispersity of cyanoethyl substituents of (E-CE) C. (E-CE)C/PAA colour composite films were thermally stable and their colours did not change withtemperature below the temperature of 100℃. The water-rcsistance of composite films weremodified oy forming cross-linkage between PAA chains and the colour shifted to reddirection after the cross-linked composite films absorbed water. When the water wasremoved from composite films, however, the colour could change back to original one. Thesurface of composite films without cross-linking was destroyed and the colour disappearedafter aosorbing water.

关 键 词：乙基氰乙基 纤维素 彩色 复合膜 聚丙烯酸 

分 类 号：TQ342.3[化学工程—化纤工业] O484.41[理学—固体物理]