SCI和EI收录∣中国化工学会会刊

›› 2016, Vol. 24 ›› Issue (9): 1290-1297.

• Materials and Product Engineering • 上一篇    下一篇

Synthesis and characterization of copolymers of poly(m-xylylene adipamide) and poly(ethylene terephthalate) oligomers by melt copolycondensation

Fenglei Bi1, Jianqiang Shao1, Zhenhao Xi1, Ling Zhao1, Di Liu2   

  1. 1 Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2 Beijing Sanlian Hope Shin-Gosen Technical Service Co., Ltd., Beijing 100102, China
  • 收稿日期:2015-10-30 修回日期:2016-03-04 出版日期:2016-09-28 发布日期:2016-11-11
  • 通讯作者: Ling Zhao,E-mail address:zhaoling@ecust.edu.cn

Synthesis and characterization of copolymers of poly(m-xylylene adipamide) and poly(ethylene terephthalate) oligomers by melt copolycondensation

Fenglei Bi1, Jianqiang Shao1, Zhenhao Xi1, Ling Zhao1, Di Liu2   

  1. 1 Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2 Beijing Sanlian Hope Shin-Gosen Technical Service Co., Ltd., Beijing 100102, China
  • Received:2015-10-30 Revised:2016-03-04 Online:2016-09-28 Published:2016-11-11

摘要: Poly(m-xylylene adipamide)/poly(ethylene terephthalate) (MXD6/PET) copolymers are synthesized by melt copolycondensation with 1-5 wt% low molecular weight PET oligomers into the MXD6 oligomers at 260℃. FR-IR and 1H NMR analysis results indicate that the interchange reaction has occurred between MXD6 oligomers and PET oligomers. The thermal behavior of copolymers shows that the melting temperature of MXD6/PET copolymers decreases with the increasing of amount of PET oligomers, while the crystallization temperature accordingly increases. And the equilibrium temperature Tm0 is evaluated to be 251.8℃ for the copolymers with 5 wt% PET oligomer adding, which is very close to that of neat MXD6. The tensile and impact strength of MXD6/PET copolymers are significantly improved than that of pure MXD6 by mechanical properties test, and the microfibril structure in the impact fracture sample's surface reveals the feature of ductile fracture.

关键词: Polymerization, Poly(m-xylylene adipamide), Poly(ethylene terephthalate), Crystallization, Mechanical properties

Abstract: Poly(m-xylylene adipamide)/poly(ethylene terephthalate) (MXD6/PET) copolymers are synthesized by melt copolycondensation with 1-5 wt% low molecular weight PET oligomers into the MXD6 oligomers at 260℃. FR-IR and 1H NMR analysis results indicate that the interchange reaction has occurred between MXD6 oligomers and PET oligomers. The thermal behavior of copolymers shows that the melting temperature of MXD6/PET copolymers decreases with the increasing of amount of PET oligomers, while the crystallization temperature accordingly increases. And the equilibrium temperature Tm0 is evaluated to be 251.8℃ for the copolymers with 5 wt% PET oligomer adding, which is very close to that of neat MXD6. The tensile and impact strength of MXD6/PET copolymers are significantly improved than that of pure MXD6 by mechanical properties test, and the microfibril structure in the impact fracture sample's surface reveals the feature of ductile fracture.

Key words: Polymerization, Poly(m-xylylene adipamide), Poly(ethylene terephthalate), Crystallization, Mechanical properties

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