Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9560617 | Polymer Degradation and Stability | 2005 | 6 Pages |
Abstract
The thermooxidative degradation of poly(vinyl chloride)/chlorinated polyethylene blends of different compositions was investigated by means of isothermal thermogravimetry in flowing atmosphere of synthetic air at temperatures 240-270 °C. The main degradation processes are dehydrochlorination of PVC and CPE. For calculation of the apparent activation energy and apparent pre-exponential factor two kinetic methods were used: isoconversional method and Prout-Tompkins method. True compensation dependency between Arrhenius parameters, obtained using Prout-Tompkins model, was found. Calculated kinetic parameters of isothermal thermooxidative degradation are close to those from non-isothermal degradation and confirm the assumption of the main degradation process in PVC/CPE blends.
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Authors
NataÅ¡a Stipanelov VrandeÄiÄ, Branka AndriÄiÄ, Ivka KlariÄ, Tonka KovaÄiÄ,