手性丙烯酸酯侧链液晶聚合物液晶行为的聚合物效应  

POLYMER EFFECT OF A CHIRAL SIDE CHAIN LIQUID CRYSTAL POLYACRYLATE

作　　者：何流[1] 江雪平[1] 张树范[1] 漆宗能[1] 王佛松[1] 

机构地区：[1]中国科学院化学研究所

出　　处：《高分子学报》1997年第1期79-84,共6页Acta Polymerica Sinica

基　　金：国家自然科学基金

摘　　要：研究了手性丙烯酸酯侧链液晶聚合物聚４丙烯酰十一烷氧基４′［Ｓ（）２甲基丁氧基］联苯（ＰＡ１１）的分子量对其液晶行为的影响，结果表明，ＰＡ１１的相变温度随聚合度增大而升高，当聚合度大于１５以后，分子量对相变温度影响不明显，低聚合度的ＰＡ１１只表现出双向性的ＳＡ相，而聚合度大于７的ＰＡ１１不仅具有双向性ＳＡ相，而且还表现出双向性ＳＣ相；The molar mass effect on phase transition of a chiral side chain liquid crystal poly 4 acryloxyloxy undecanoloxy 4′ [ s( ) 2 methylbutyloxyloxy] biphenyl (PA 11) was studied in the present work. The experimental results show that the mesomorphic temperature range depended on the degree of polymerization ( DP ) of polymer. The PA 11 with DP below 7 exhibits an enantiotropic S A mesophase, while polymer with DP over 7 displays both S A and S * C enantiotropic mesophases. Moreover, molar mass distribution has an effect on liquid crystalline behaviour of polymer.

关 键 词：液晶聚合物 聚丙烯酸酯 聚合物效应 分子量 

分 类 号：O753.2[理学—晶体学]