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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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Published in: | Polymer science USSR 1975, Vol.17 (5), p.1299-1305 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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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. |
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ISSN: | 0032-3950 1878-268X |
DOI: | 10.1016/0032-3950(75)90393-7 |