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己二酰双己内酰胺扩链合成聚己二酸丁二醇酯
引用本文:李开勇,赵京波. 己二酰双己内酰胺扩链合成聚己二酸丁二醇酯[J]. 北京化工大学学报(自然科学版), 2005, 32(6): 36-39
作者姓名:李开勇  赵京波
作者单位:北京化工大学材料科学与工程学院,北京 100029
摘    要:以己二酰双己内酰胺(ABC)作为扩链剂,对低相对分子质量的聚己二酸丁二醇酯(PBA)进行扩链,研究了各种因素对聚酯相对分子质量的影响; 并采用1H-NMR和红外光谱对扩链后聚酯的结构进行了表征,提出了扩链反应的机理。扩链剂己二酰双己内酰胺与端羟 基PBA进行扩链反应时,主要通过脱除己内酰胺,以己二酰结构将PBA预聚体偶联起来,使聚酯的相对分子质量成倍增加。

关 键 词:己二酰双己内酰胺  扩链剂  聚己二酸丁二醇酯  己二酰双己内酰胺  扩链剂  聚己二酸丁二醇酯
收稿时间:2005-04-07
修稿时间:2005-04-07

Synthesis of polybutylene adipate by a chain-extending reaction with adipoyl bis-caprolactamate
LI Kai-yong,ZHAO Jing-bo. Synthesis of polybutylene adipate by a chain-extending reaction with adipoyl bis-caprolactamate[J]. Journal of Beijing University of Chemical Technology, 2005, 32(6): 36-39
Authors:LI Kai-yong  ZHAO Jing-bo
Affiliation:College of Materials Science and Engineering, Beijing University of Chem ical Technology, Beijing 100029, China
Abstract:Polybutylene adipate (PBA) with a high molecular weight was synthesized by a chain-extending reaction from HO-terminated polybutylene adipate with adipoyl bisca prolactamate (ABC) as a chain-extender under a reduced pressure in bulk state. The influence factors were studied and the chain-extended polyester with Mn up to 32843 and Mw up to 65244 was obtained. The polyester was characterized by FTIR spectrum and H-NMR spectrum, and the mechanism of the chain-extending reaction was proposed. The chain-extending reaction of HO-terminated PBA with ABC proceeds through the elimination of the caprolactam rings, and the adipoyl groups in the chain-extender couple the hydroxyl-terminated PBA together, resulting in the molecular weight increased. 
Keywords:adipoyl biscaprolactamate  chain-extender  polybutylene adipate  
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