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.

• 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。