✦ LIBER ✦

Thermal degradation of perfluoropolyphenylenes

✍ Scribed by J. L. Cotter; G. J. Knight; J. M. Lancaster; W. W. Wright

Publisher: John Wiley and Sons
Year: 1968
Tongue: English
Weight: 412 KB
Volume: 12
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1968.070121108

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✦ Synopsis

The thermal degradation of metuand para-linked perfluoropolyphenylenes in uacuo and in oxygen has been studied. Rates of breakdown were determined thermogravimetrically and products of breakdown in vacuum analyzed by using a mass spectrometer. The thermal stability in YUCUO was comparable with that of polyphenylene, and that in oxygen was rather inferior to that of polytetrafluoroethylene. The higher molecular weight polymers gave as the main volatile degradation products silicon tetrafluoride and carbon dioxide, together with a carbonized residue containing virtually no fluorine.

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