聚天冬氨酸的合成研究

Studies of Poly(succinimide) Synthesized Acid-catalysed Polycondensation of L-Aspartic Acid

摘要: 以L-天冬氨酸为原料，磷酸为催化剂，在不同溶剂中进行缩聚反应，合成中间体聚丁二酰亚胺(PSI)，当混合溶剂为m三甲苯／m环丁砜=7／3时，可得到较高分子量的PSI。当催化剂与单体的质量比为0．14时，分子量达到最大值。将PSI碱解得到聚天冬氨酸。

Abstract: Poly(aspartic acid) is a water-soluble polymer at great importance. This polymer is known to be biodegradable and can be used in medical,comestic fabric and metal adsorbents. Poly(succinimide)(PSI) was synthesized by acid-catalysed polycondensation of L -