合成方法对芳香共聚酰胺液晶行为的影响  

Effects of synthetic methods on the liquid crystalline behavior of aromatic copolyamides

作　　者：单国荣[1] 潘智存[1] 刘德山[1] 周其庠[1] 

机构地区：[1]清华大学化学工程系

出　　处：《清华大学学报（自然科学版）》1998年第6期31-33,37,共4页Journal of Tsinghua University(Science and Technology)

摘　　要：共缩聚改性是制备综合性能优异的芳香聚酰胺的好方法。文中就对苯二甲酰氯、对苯二胺、４，４′－二氨基二苯醚低温共缩聚体系中的第一次对苯二甲酰氯与对苯二胺的比值对共聚酰胺浓硫酸溶液液晶临界浓度、清亮点、液晶相图以及液晶织构的影响进行研究。从液晶行为的角度提出共缩聚改性的合成方法。合成方法对共缩聚物浓硫酸溶液液晶行为的影响，主要是通过合成方法控制共缩聚物分子链微观结构来实现，这为芳香共聚酰胺的合成方法选择提供依据。It is an effectively used to obtain excellent properties of aromatic copolyamides by copolycondensing modification. In the system of terephthaloyl dichloride, pphenylene diamine and 4,4′diaminodiphenylether lowtemperature solution copolycondensation, the effect of TDC1 concentration on the critical concentration, isotropic temperature and phase diagram of liquid crystal of anisotropic solutions in 100.0% sulphuric acid were studied. A suitable synthetic method was put forward from the point of liquid crystalline behavior. The molecular structure and liquid crystalline behavior were controlled by the synthetic method. According to the presented results, a suitable synthetic method can be selected.

关 键 词：合成 芳香共聚酰胺 液晶行为 

分 类 号：O633.22[理学—高分子化学] O753.2[理学—化学]