Pyrolytic gas chromatographic investigation of the thermal degradation of polystyrene

Autor:	I.Ya. Poddubnyi, N.B. Zaitsev
Rok vydání:	1975
Předmět:	chemistry.chemical_classification Chromatography Materials science General Engineering Analytical chemistry Polymer Activation energy Atmospheric temperature range chemistry.chemical_compound chemistry Degradation (geology) Polystyrene Pyrolytic carbon Bond energy Pyrolysis
Zdroj:	Polymer Science U.S.S.R.. 17:1299-1305
ISSN:	0032-3950
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::265c9075c89ae91e25e5021d2c01b3c2 https://doi.org/10.1016/0032-3950(75)90393-7 Zobrazit plný text záznamu