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Thermoanalytical investigation of transformation of polyamido acid into polyimide

✍ Scribed by Yu. N. Sazanov; G. N. Fedorova; L. M. Shcherbakova

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
488 KB
Volume
19
Category
Article
ISSN
0021-8995

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✦ Synopsis

The effect of solvent and schedules of treatment of solutions of polyamido acid synthesized from diaminodiphenylic ether and pyromelitic dianhydride on its transformation into polyimide, and the effect on thermal characteristics of the latter, has been investigated by simultaneous thermogravimetric and differential thermal analysis. It was shown that dimethylformamide strongly affects the formation and properties of polyimide film. Optimum conditions of preparation of polyimide films were determined with the authors' taking into account the high reactivity of dimethylformamide. A possibility of using a water-acetone mixture as a medium for the preparation of polyimide films was shown.

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