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Thermal degradation of perfluoropolyphenylenes
Author(s) -
Cotter J. L.,
Knight G. J.,
Lancaster J. M.,
Wright W. W.
Publication year - 1968
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1968.070121108
Subject(s) - tetrafluoride , degradation (telecommunications) , thermal stability , materials science , carbonization , polymer , oxygen , polytetrafluoroethylene , thermogravimetric analysis , chemical engineering , fluorine , thermal , polymer chemistry , analytical chemistry (journal) , organic chemistry , composite material , chemistry , scanning electron microscope , telecommunications , physics , meteorology , computer science , engineering , metallurgy
The thermal degradation of meta ‐ and para ‐linked perfluoropolyphenylenes in vacuo 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 vacuo 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.