ABA／PET液晶共聚酯酰胺的结构与性能

Structure and Properties of p-Aminobenzoic Acid / PET Liquid Crystalline Copolyesteramides

摘要: 研究了对象基苯甲酸（ＡＢＡ）／聚对苯二甲酸乙二酯（ＰＥＴ）液晶共聚酯酰胺的晶体结构，以及热性能、流变学和力学性质。广角Ｘ射线衍射研究结果表明ＡＢＡ链节的引入使ＰＥＴ的晶态结构发生畸变，但大部分结晶衍射峰仍然存在。随着ＡＢＡ含量的增加，各晶面间距基本不变，微晶尺寸显著增大，结晶度急剧降低。差示扫描量热分析和热失重结果表明共聚酯胺具有优良的热稳定性，并且随着ＡＢＡ含量的增加，共聚物的热稳定性提高，共聚

Abstract: The crystal structure, thermal behavior, rheology and mechanical properties of p-aminobenzoic acid (ABA) /poly(ethylene terephthalate) (PET) liquid crystalline copolyesteramides were studied. The wide angle X-ray diffraction (WAXD) showed that the crysta