一种侧链液晶高分子的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF A SIDE CHAIN LIQUID CRYSTALLINE POLYMER

作　　者：武长城[1] 谷勤翠[1] 陈寿羲[1] 黄勇[1] 

机构地区：[1]中国科学院化学研究所分子科学中心高分子物理与化学国家重点实验室,北京100080

出　　处：《高分子学报》2004年第4期518-522,共5页Acta Polymerica Sinica

基　　金：国家自然科学基金资助项目 (基金号 2 992 5 411)

摘　　要：合成了一种主链为甲基丙烯酸酯 ,侧链是三个苯环以酯键相连的介晶基元 ,柔性间隔段为两个亚甲基的新的侧链液晶高分子 .聚合物和单体的化学结构、液晶相转变和液晶态织构采用红外光谱、核磁共振、偏光显微镜、差热分析和广角X光衍射进行了表征 .研究表明 ,单体呈现近晶相和向列相两个液晶相 ,聚合物在很宽的温度范围内呈向列相 .A new side chain liquid crystalline polymer based on the backbone of polymethacrylate containing triphenyl which was connected with ester bond as side chain mesogenic moiety, and its flexible spacer was two methylenes was prepared. Fr-IR,H-1-NMR,POM with hot stage, DSC and WAXD were used to study the structure, phase behavior and mesophase texture of this polymer and monomer. The monomer shows nematic and semectic phases and the polymer is nematic over a wide temperature range. The solidification-induced band texture can be observted in nematic phase of the side chain liquid crystalline polymer.

关 键 词：侧链液晶高分子 合成 甲基丙烯酸酯 相转变 化学结构 核磁共振 偏光显微镜 固化诱导条带织构 

分 类 号：O631[理学—高分子化学]