HBA/PET/BA-TPA液晶共聚酯的合成与表征  

Synthesis and Characterzation of Liquid Crystalline Copolyester HBA/PET/BA—TPA

作　　者：陈延明 

机构地区：[1]辽阳石油化工高等专科学校高分子系

出　　处：《大连轻工业学院学报》1997年第3期13-17,共5页Journal of Dalian Institute of Light Industry

摘　　要：以ＢＡ—ＴＰＡ为第三单体，采用熔融缩聚的方法，合成了ＨＢＡ／ＰＥＴ／ＢＡ—ＴＰＡ三元体系的液晶共聚酯样品。并使用热台制成了不同温度条件下共聚酯液晶态的骤冷样品，再于正交偏光显微镜下观察其液晶形态。结果表明：所合成的共聚酯样品在２６０～３００℃温度范围内均具有向列型液晶的织态结构。The liquid crystalline copolyester HBA/PET/BA—TPA is synthesized by melt polycondensation method. The monomers used in the experiment are HBA(p—hydroxybenzoic acid),PET poly (ethylene tevephthalate), BA(4,4′—dihydroxydiphenylproopame) and TPA(Terephthalic acid).BA—TPA acts as the third monomer.The quenching samples of the LCP is prepared using hot—stage under a certain temperature. Then the mesophase of LCP is observed under crossed polarizer microscope.The result indicates that all of the quenching samples of LCP show nematic liquid crystalline texture structure while temperature is in the range of 260～360℃.

关 键 词：液晶 液晶高聚物 织态结构 共聚酯 合成工艺 

分 类 号：TQ317[化学工程—高聚物工业] TQ316.4