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A new class of polyimide hybrid films with various amounts of alumina has been synthesized by the sol-gel reaction and characterized. The hybrid films were obtained by the hydrolysis and polycondensation of heteropropyl-alumina in polyamic acid (PAA) solution of N,N'-dimethylacetamide (DMAc), followed by heating to 350degC. The chemical structure, surface morphology of the composites films were characterized...
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