Ionic conductivity of polymer electrolytes derived from various diisocyanate-based waterborne polyurethanes

Ten Chin Wen, Shih Sheng Luo, Chien Hsin Yang

研究成果: Article同行評審

53 引文 斯高帕斯(Scopus)

摘要

Various diisocyanate-based waterborne polyurethanes (WPU) were synthesized by polyaddition of poly(propylene glycol) (PPG) and dimethylol propionic acid (DMPA) with various diisocyanates ((4,4'-methylenebis(phenyl isocyanate) (MDI), 4,4'-methylenebis(cyclohexyl isocyanate)(H12MDI), isophorone diisocyanate (IPDI), and toluene diisocyanate(TDI) via our modified acetone process. Differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FTIR), and impedance spectroscopy (IS) were utilized to monitor the phase change and the conductivity of the WPU-based electrolytes with the doped lithium perchlorate (LiClO4) concentration. The soft segment T(g) increases with increasing LiClO4 from the examination of DSC. Significant changes occur in the FTIR spectrum of the various diisocyanate-based WPUs with adding LiClO4, indicating that different interactions with the lithium cation within the hard segment and between the hard and soft phases occur. The result reflects that the phase separation of aromatic diisocyanate-based WPU is more significant than that of aliphatic one in the addition of salts. IS results indicate that there exists the different effect of the added lithium salt on conductivity for aromatic/aliphatic diisocyanate-based WPU electrolytes. (C) 2000 Elsevier Science Ltd. All rights reserved.

原文English
頁(從 - 到)6755-6764
頁數10
期刊polymer
41
發行號18
DOIs
出版狀態Published - 2000 8月

All Science Journal Classification (ASJC) codes

  • 有機化學
  • 聚合物和塑料
  • 材料化學

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