EFFECT OF SEQUENCE STRUCTURE ON THE THERMOTROPIC LIQUID CRYSTALLINE PROPERTIES OF POLYESTERAMIDES BASED ON DIMETHYLBENZIDINE, BISPHENOL-A AND p-TEREPHTHALYL CHLORIDE

• 来源期刊: 高分子科学（英文版）
• 学科: 化学
• 年，卷（期）: 1998,（1）
• 页码范围: 81-85
• 页数: 5页
• 分类号: O6
• 语种: 英文

摘要

A series of thermotropic liquid crystalline polyesteramides with different sequence structure based on dimethylbenzidine (DMBD), bisphenol-A(BPA) and pterephthalyl chloride (TPC) was synthesized by changing the feeding order of monomers in low temperature solution polycondensation system. By means of NMR and a computer program the sequence structure parameters were measured. The effect of sequence structure on liquid crystalline phase transition temperature of PEAs obtained was investigated.