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Poly(1,3,4-oxadiazole-amide)s containing pendent imide groups

✍ Scribed by C. Hamciuc; E. Hamciuc; I. Sava; A. Stoleriu; F. W. Mercer; M. Bruma

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
525 KB
Volume
7
Category
Article
ISSN
1042-7147

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✦ Synopsis

A series of new poly(l,3,4-oxadiazole-amide)s containing pendent imide groups has been synthesized by solution polycondensation of aromatic diamines containing preformed 1,3,4-oxadiazole rings with two diacid chlorides containing imide rings. These polymers were also prepared by the reaction of the same diacid chlorides with p-aminobenzhydrazide which were subsequently cyclodehydrated in solid state. The polymers were soluble in polar amidic solvents and some of them gave transparent flexible films by casting from solutions. They showed high thermal stability with decomposition temperatures above 400°C and glass transition temperatures in the range of 245-327°C. They had low dielectric constants, in the range of 3.32-3.94, and good tensile properties.

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