Miscibility studies of polyimide/poly(ether imide) molecular composites

T. Fukai, J. C. Yang, T. Kyu, S. Z D Cheng, S. K. Lee, S. L C Hsu, F. W. Harris

研究成果: 雜誌貢獻文章同行評審

26 引文 斯高帕斯(Scopus)

摘要

A new group of miscible mixtures (molecular composites) has been studied by means of differential scanning calorimetry, dielectric relaxation and dynamic mechanical techniques. Three kinds of rigid aromatic polyimides (PI) and a commercial-grade poly(ether imide) (PEI) were mixed by dissolving them in m-cresol and subsequently coagulating in methanol. The mixtures show a single glass transition temperature (Tg) in all compositions in which the Tg increases with increasing PI content. These Tg values are reproducible in repeated heating cycles, suggesting the true miscibility of the blends. This miscibility may be attributed to the similarity of imide structure between the rigid PI and PEI matrix. The bulk PI/PEI indeed shows improved modulus and tensile strength as compared to the pure PEI matrix.

原文英語
頁(從 - 到)3621-3626
頁數6
期刊Polymer
33
發行號17
DOIs
出版狀態已發佈 - 1992
對外發佈Yes

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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