Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (2): 170-175.DOI: 10.11944/j.issn.1000-0518.2019.02.180380

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Effects of 1,2-Butanediol Comonomer on the Crystallization Behavior and Mechanical Properties of Poly(ethylene terephthalate)

ZHONG Zhenxingab,LIU Guilanc,LI Yonghaic,LI Lianguoc,HUANG Yana,ZHANG Guangyua*(),SU Zhaohuia   

  1. aState Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    bUniversity of Science and Technology of China,Hefei 230026,China
    cChangchun GBT Biochemical Co.,Ltd.,Changchun 130102,China
  • Received:2018-11-29 Published:2019-02-01 Online:2019-01-31
  • Contact: ZHANG Guangyu
  • Supported by:
    Fund item:Supported by the Jilin Province and Chinese Academy of Sciences Science and Technology Cooperation Special Funds for High-tech Industrialization(No.2017SYHZ0017)

Abstract:

In this work, poly(ethylene terephthalate)(PET) homopolymer and copolymers were synthesized from biomass-derived ethylene glycol containing 0, 2.0%, 2.7%, and 5.6% mole fraction of 1,2-butanediol(1,2-BDO) in order to explore the effects of the comonomer on the crystallization behavior and the mechanical properties of the PET. The polymers were investigated by Fourier transform infrared spectroscopy(FTIR), differential scanning calorimetry(DSC), and mechanical testing. It is found that the melting temperature, crystallization rate and crystallinity of the PET decrease as mole fraction of 1,2-BDO comonomer increases, indicating that the incorporation of the 1,2-BDO units can disrupt the ordered structure of the PET chains and therefore hinder the crystallization. In addition, the tensile strength of PET materials decreases while the flexural modulus and strength increase slightly at higher 1,2-BDO mole fraction.

Key words: poly(ethylene terephthalate), copolymers, 1, 2-butanediol, crystallization behavior, mechanical properties