Synthesis and characterization of new silicon-containing poly(arylene-1,3,4-oxadiazole)s
- 1 August 1995
- journal article
- Published by SAGE Publications in High Performance Polymers
- Vol. 7 (4) , 493-501
- https://doi.org/10.1088/0954-0083/7/4/011
Abstract
New silicon-containing aromatic polyhydrazides were synthesized by low-temperature solution polycondensation reaction of bis(p-chlorocarbonylphenyl)diphenylsilane with various aromatic dihydrazides, or of bis(p-carbohydrazidophenyl)diphenylsilane with diacid chlorides. The corresponding poly(arylene-1,3,4-oxadiazole)s wvere prepared by thermal cyclodehydration in the solid state. The cyclization process takes place at temperatures in the range of 250-300 IC. The resulting silicon-containing poly(arylene-1,3,4-oxadiazole)s are soluble in common organic solvents and have good film-forming abilities. They are stable up to 420-480 'C and their glass transition temperature is in the range of 262-278C.Keywords
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