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- W2382809713 abstract "A new class of soluble polyimide/silica hybrid films or solutions were poepared by the sol-gel reaction starting from tetraethoxyilane(TEOS) in the solution of polyamic acid in N- methyl-2-pyrrolidone. The hybrid films were obtained by the hydroysispolycondensation of TEOS in the polyamic acid solution, followed by heating st 270℃. UV-Vis, XPS, IR and SEM were employed tocharcterize the process and mechanism of sol-gel transition. The results obtained indente that the polycondensation of silica gel and imidization of polyamic acid are accomplished simultaneously. Before heated with high temperature, there exists a relative stableintermediate status, which mates the sol-gel route more flexible to prepare organic-inorganic nanocomposites." @default.
- W2382809713 created "2016-06-24" @default.
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- W2382809713 date "1999-01-01" @default.
- W2382809713 modified "2023-09-28" @default.
- W2382809713 title "Studies on Soluble Polyimide/Silica Nanocomposites via Sol-gel Process──I. Studies on Sol-gel Transition and Reaction Mechanisms" @default.
- W2382809713 hasPublicationYear "1999" @default.
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