Characteristics of PPG-based thermoplastic polyurethane doped with lithium perchlorate

Ten Chin Wen, Jui Chin Fang, Hung Jye Lin, Chien Hsin Yang

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

Segmented thermoplastic polyurethane (TPU) was synthesized from methylene bis(cyclohexyl isocyanate) (H12MDI), ethylenediamine (EDA), and poly(propyleneglycol) (PPG) with a molecular weight of 1000. The ratio of hard segment to soft segment (NCO/OH) is changed to test the chemical and physical properties. Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and impedance spectroscopy (IS) were utilized to monitor the phase change of these TPU samples with various lithium perchlorate (LiClO4) concentrations. Significant changes occur in the FTIR spectrum of the TPU with LiClO4 concentration above 0.5 mmol/g TPU, indicating that an interaction existed between the lithium cation and the hard segment or soft phase. The soft-segment Tg increased with increasing LiClO4 concentration through the examination of DSC. IS results indicate an increase in bulk conductivity as the salt concentration is increased. Electrochemical stability of the TPU sample was studied by cyclic votammetry (CV).

原文English
頁(從 - 到)389-399
頁數11
期刊Journal of Applied Polymer Science
82
發行號2
DOIs
出版狀態Published - 2001 10月 10

All Science Journal Classification (ASJC) codes

  • 一般化學
  • 表面、塗料和薄膜
  • 聚合物和塑料
  • 材料化學

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