Citation: Ning Zhu, Hua Gong, Wei Han, Wen-Bo Zeng, Hai-Xin Wang, Zheng Fang, Xin Li, Kai Zhang, Zhen-Jiang Li, Kai Guo. Synthesis and characterization of star-branched polyamide 6 via anionic ring-opening polymerization with N,N', N''-trimesoyltricaprolactam as a multifunctional activator[J]. Chinese Chemical Letters, ;2015, 26(11): 1389-1392. doi: 10.1016/j.cclet.2015.06.005 shu

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

Ning Zhu ^a ,
Hua Gong ^a ,
Wei Han ^a ,
Wen-Bo Zeng ^a ,
Hai-Xin Wang ^a ,
Zheng Fang ^b ,
Xin Li ^a ,
Kai Zhang ^a ,
Zhen-Jiang Li ^a,c ,
Kai Guo ^a,c,,

1.
a College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China;
2.
b School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, China;
3.
c State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China

Corresponding author: Kai Guo,
Received Date: 7 April 2015
Available Online: 2 June 2015

Star-branched polyamide 6 was prepared via anionic ring-opening polymerization of e-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-caprolactammagnesium bromide as a catalyst. Compared with its linear counterpart, the resultant star-branched polyamide 6 showed smaller relative viscosity (1.51), decreasedmelting 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 polymer
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