Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (1): 54-59.DOI: 10.11944/j.issn.1000-0518.2017.01.160093

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Synthesis and Characterization of Polyethylene Terephthalate-b-poly(ethylene 2,5-furandicarboxylate) Block Polyester

LI Lianguia,FU Zhipengab,LI Mingchaoc,ZHANG Qiangb,WANG Ruib,WANG Guoqiangb,JIANG Minb*()   

  1. aCollege of Chemistry and Life Sciences,Changchun University of Technology,Changchun 130012,China
    bKey Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Science,Changchun 130022,China
    cCarbide Factory of Jilin Petrochemical Co. Ltd,Petro. China,Jilin,Jilin 132022,China
  • Received:2016-03-07 Accepted:2016-06-08 Published:2017-01-03 Online:2017-01-03
  • Contact: JIANG Min
  • Supported by:
    Suported by the National Natural Science Foundation of China(No.51103152)

Abstract:

Poly(ethylene 2,5-furandicarboxylate)(PEF) was synthesized based on 2,5-furanicarboxylica acid and ethylene glycol. Polyethylene terephthalate-b-poly(ethylene 2,5-furandicarboxylate)(PET-b-PEF) block copolymers were prepared by melt transesterification method. PET was partly replaced by PEF polyester. The properties of PET-b-PEF block copolymers were characterized by nuclear magnetic resonance spectormeter(NMR), differential scanning calorimeter(DSC), thermo gravimetric analysis(TGA) and X-ray diffraction(XRD). The results show that the glass transition temperature(Tg) of copolyesters is about 75.8~80.3 ℃. The Tg of the PET-b-PEF block copolyesters first decreases and then increases; the crystallinity and the melting temperature decrease with the increasing contents of PEF segments, moreover, there is no crystalline diffraction peaks for the copolyesters when the chain segment content of PEF is higher than 15%. The initial decomposition temperature of this series of copolyesters is about 392.2~407.9 ℃. PEF has excellent thermal properties similar to that of PET(403.3 ℃). In addition, the thermal stability of the copolyesters is better than that of PET, when the chain segment contents of PEF in the coplyester is less than 15%, and the initial decomposition temperature of PET-b-PEF block copolymers is close to that of PET.

Key words: poly(ethylene terephthalate), poly(ethylene furandicarboxylate), block copolymer