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Polypyromellitimides based on carbazole and substituted carbazoles

✍ Scribed by Mukul Biswas; Sukhendu K. Das

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
215 KB
Volume
18
Category
Article
ISSN
0014-3057

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✦ Synopsis

Polypyromellitimides have been synthesized from carbazole and N-benzylcarbazole by a two-step procedure involving ring-opening polyaddition with pyromellitic dianhydride and subsequent thermal cyclodehydration. The physicochemical, thermal and dielectric properties of the polymers have been studied. The various N-substituents, such as N-methyl and N-benzyl groups of the carbazole moieties, exert some influence on the overall thermal and dielectric properties of the polyimides. The influence has been rationalized in terms of gross structural characteristics.

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