对羟基苯甲酸／聚对苯二甲酸丁二酯共聚酯的热行为及液晶性  

Thermal Behavior and Liquid Crystalline Property of p-Hydroxybenzoic Acid/Poly(butyleneterephthalate)Copolyester

作　　者：王勇[1] 吴大诚[1] 

机构地区：[1]成都科技大学纺织工学院

出　　处：《应用化学》1994年第5期95-97,共3页Chinese Journal of Applied Chemistry

摘　　要：采用差示扫描量热仪和热台偏光显微镜研究了对羟基苯甲酸（ＰＨＢ）／聚对苯二甲酸丁二酯（ＰＢＴ）共聚酯的热转变行为和液晶性。结果表明，ＰＨＢ／ＰＢＴ共聚酯呈现多重相转变特征，这与共聚酯中存在不同程度的ＰＢＴ富微区和ＰＨＢ富微区有关；当ＰＨＢ链节含量在２０％～８０％范围时，共聚酯均呈现向列型液晶特征．Thermal transitions and liquid crystalline properties of copolyesters based onpoly(butyleneterephthalate)(PBT)and p-hydroxybenzoic acid(PHB ) were examined byDSC and hot stage polarizing microscopy. The results showed a multi-phase transition asso-ciated with PBT-rich domain and PHB-ricli domain in the copolyester. Typical nematic liquidcrystalline phase of the copolyesters appeared when PHB content ranged in 20%～80%。

关 键 词：PHB PBT 共聚酯 热行为 液晶性 

分 类 号：O633.14[理学—高分子化学]