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Pyrolytic gas chromatographic investigation of the thermal degradation of polystyrene

The thermal degradation of polystyrene (PS) has been investigated over a temperature range of 300–570° by the pyrolytic gas chromatography method, with pulsed conditions of pyrolysis and microgramme portions of polymer. Separate stages in the thermal degradation of PS are seen in the light of a quan...

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Bibliographic Details
Published in:Polymer science USSR 1975, Vol.17 (5), p.1299-1305
Main Authors: Zaitsev, N.B., Poddubnyi, I.Ya
Format: Article
Language:English
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Summary:The thermal degradation of polystyrene (PS) has been investigated over a temperature range of 300–570° by the pyrolytic gas chromatography method, with pulsed conditions of pyrolysis and microgramme portions of polymer. Separate stages in the thermal degradation of PS are seen in the light of a quantitative analysis of the degradation products. It is shown that given strict temperature control of the process of pyrolysis the thermal degradation of PS takes place by a chain mechanism with a monomer yield of practically 100%. The activation energy E for the thermal degradation of PS is estimated on the basis of the total material balance for the degradation products obtained at different temperatures. Having found the value of E it is then possible for direct estimates to be made of the bond energy of carbon atoms in the polymer chain.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(75)90393-7