含对羟基苯甲酸热致液晶共聚酯的合成与性质  

Synthesis and Properties of Thermotropic Liquid Crystalline Copolyester Containing 4-Hydroxybenzoic Acid

作　　者：杨永生 赵丽军 董德文 倪玉山[1,2,3] 

机构地区：[1]黑龙江省体育运动技术学院 [2]哈尔滨市药材公司职工学校 [3]中国科学院长春应用化学研究所

出　　处：《东北师大学报（自然科学版）》1999年第1期52-56,共5页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：采用偏苯三甲酸酐与１，６－己二胺制备了Ｎ，Ｎ′－己（１，６）二烷基－双偏苯三甲酸酰亚胺，并以此二酸与４，４′－二羟基二苯酮、对羟基苯甲酸、对苯二甲酸经直接熔融缩聚合成了系列共聚酯，所得聚合物经偏光显微镜、差示扫描量热计、广角Ｘ－射线衍射仪表征具有向列型液晶特征．A dicarboxylic acid, N,N′-hexane-1,6-diylbis(trimellitimide), was prepared by the reaction of trimellitic anhydride with 1,6-hexane diamine. From the diacid, a series of copolyesters had been synthesized by thermal condensation with bis(4-hydroxyphenyl) ketone, p -hydroxybenzoic acid and different molar ratio of terephthalic acid. Properties of the resulting copolyesters were characterized by polarized light microscopy, differential scanning calorimetry (DSC) and wide angle X-ray diffraction (WAXD). All the copolyesters could form a nematic phase over a wide temperature range above their melt.

关 键 词：对羟基苯甲酸 热致液晶聚合物 共聚酯 合成 

分 类 号：O633.14[理学—高分子化学] O753.2[理学—化学]