Effect of hard segment length on the properties of poly(ether ester) elastomer prepared by one pot copolymerization of poly(ethylene glycol) and cyclic butylene terephthalate

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• 作者：Yinhe Su ; Junrong Yu ; Yan Wang ; Jing Zhu ; Zuming Hu
• 关键词：Poly(ether ester) elastomer ; Cyclic butylene terephthalate ; Poly(ethylene glycol) ; Ring opening polymerization
• 刊名：Journal of Polymer Research
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：22
• 期：10
• 全文大小：916 KB
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  24.Harsch M, Karger
• 作者单位：Yinhe Su (1)
  Junrong Yu (1)
  Yan Wang (1)
  Jing Zhu (1)
  Zuming Hu (1)
  
  1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Industrial Chemistry and Chemical Engineering
  Characterization and Evaluation Materials
  
• 出版者：Springer Netherlands
• ISSN：1572-8935

文摘

A series of poly(ether ester) thermoplastic elastomer were synthesized by a novel single step of cyclic butylene terephthalate (CBT) and poly(ethylene glycol) (PEG) in the presence of stannoxane catalyst at an elevated temperature. The resultant copolymers (pCBT–PEG) based on polymerized cyclic butylene terephthalate (pCBT) as the hard segment and PEG as the soft segment were characterized by means of fourier transform infrared spectrometer (FI-IR), proton nuclear magnetic resonance (1H NMR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) testing. The influence of hard segment length on the properties of the copolymer was investigated in the case of the soft segment length remaining constant. It is found that the pCBT segment length calculated from 1H NMR spectra was decreased with the increase of PEG content. The glass transition, melting and crystallization temperatures and the degree of crystallinity of hard segments were increased with the increase of the pCBT segment length. Thermogravimetry (TG) and derivative TG (DTG) results revealed that the thermal degradation of copolymers was slower than that of the pCBT homopolymer. Mechanical properties of polymers were also reported and the stiffness of the copolymer was improved with the increase of hard segment length. Keywords Poly(ether ester) elastomer Cyclic butylene terephthalate Poly(ethylene glycol) Ring opening polymerization