Synthesis and characterization of star-branched polyamide 6 via anionic ring-opening polymerization with N,N',N''-trimesoyltricaprolactam as a multifunctional activator  

作　　者：Ning Zhu Hua Gong Wei Han Wen-Bo Zeng Hai-Xin Wang Zheng Fang Xin Li Kai Zhang Zhen-Jiang Li Kai Guo 

机构地区：[1]College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University [2]School of Pharmaceutical Sciences, Nanjing Tech University [3]State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University

出　　处：《Chinese Chemical Letters》2015年第11期1389-1392,共4页中国化学快报（英文版）

基　　金：supported by a grant from the National High Technology Research and Development Program of China(No.2014AA021201);the National Basic Research Program of China(No.2012CB721104);China Postdoctoral Science Foundation(No.2014M551574);the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：Star-branched polyamide 6 was prepared via anionic ring-opening polymerization of ε-caprolactam in the presence of a simple benzene-centered trifunctional activator of N,N＇,N＂-trimesoyltricaprolactam. A high polymer yields of above 95% were achieved at 160 ℃ for 15 min utilizing ε-caprolactam magnesium bromide as a catalyst. Compared with its linear counterpart, the resultant star-branched polyamide 6 showed smaller relative viscosity （1.51 ）, decreased melting temperature （218 ℃） and lower crystallinity （24.2%）. The specific properties demonstrated the existence of a star-branched structure and provided potential advantages in engineering applications.Star-branched polyamide 6 was prepared via anionic ring-opening polymerization of ε-caprolactam in the presence of a simple benzene-centered trifunctional activator of N,N＇,N＂-trimesoyltricaprolactam. A high polymer yields of above 95% were achieved at 160 ℃ for 15 min utilizing ε-caprolactam magnesium bromide as a catalyst. Compared with its linear counterpart, the resultant star-branched polyamide 6 showed smaller relative viscosity （1.51 ）, decreased melting temperature （218 ℃） and lower crystallinity （24.2%）. The specific properties demonstrated the existence of a star-branched structure and provided potential advantages in engineering applications.

关 键 词：Star-branched polymerPolyamide 6Anionic ring-opening polymerizationN N＇ N＂-Trimesoyltricaprolactam 

分 类 号：TQ317[化学工程—高聚物工业]