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Thermal degradation of polystyrene—4. Decomposition of oxygen-containing polymers

✍ Scribed by G. Gordon Cameron; I.T. McWalter

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

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✦ Synopsis

The thermal decomposition of two polystyrene samples prepared by radical polymerisation in the presence of oxygen was studied in the temperature range 280-300°C where volatile formation is negligible. The energy of activation for chain scission of the oxygen-containing polymers was lower than that of a reference sample prepared under vacuum. All three polymers contained the same proportion of weak bonds and it was therefore concluded that these structures are not copolymerised peroxide groups.

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The thermal degradation in oxygen of a number of fluorine-containing polymers haa been studied by using a weight loss technique. The relative thermal stabilities of the different polymers have been determined and, where possible, the overall activation energy and frequency factors for their breakdow