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Thermoanalytical investigation of transformation of polyamido acid into polyimide
Author(s) -
Sazanov Yu. N.,
Fedorova G. N.,
Shcherbakova L. M.
Publication year - 1975
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1975.070190824
Subject(s) - polyimide , formamide , thermogravimetric analysis , materials science , dimethylformamide , acetone , solvent , polymer chemistry , chemical engineering , organic chemistry , composite material , chemistry , layer (electronics) , engineering
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 dimethyl‐formamide 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.