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Investigation of conversion of polyamido acid into polyimide by thermovolumetric analysis

✍ Scribed by Yu.N. Sazanov; V.A. Sysoev

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
189 KB
Volume
10
Category
Article
ISSN
0014-3057

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✦ Synopsis

Abstraet--Thermovolumetric analysis has shown that conversion of solution of polyamido acid into polyimide occurs in three stages: removal of solvent, dehydrocyclization and, in the case of DMFA as solvent, removal of products of its decomposition. When dimethyl-sulphoxide and methyl pyrrolidone were used as solvents, the third stage was absent.

πŸ“œ SIMILAR VOLUMES

Thermoanalytical investigation of transf
Thermoanalytical investigation of transformation of polyamido acid into polyimide
✍ Yu. N. Sazanov; G. N. Fedorova; L. M. Shcherbakova πŸ“‚ Article πŸ“… 1975 πŸ› John Wiley and Sons 🌐 English βš– 488 KB

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