Title: DEGRADATION OF POLY(VINYL CHLORIDE) WITH DIFFERENT ADDITIVES STUDIES BY MICRO RAMAN SPECTROSCOPY
Page Range: p.123-132
Author(s): Gupper A; Wilhelm P Schiller M
File size: 138K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 11
Issue No: No. 2
Abstract
Raman spectroscopy was used to study the thermal degradation of PVC. Intensity enhancements of vibrations belonging to conjugated double bond sequences in the corresponding spectra allowed for the detection at the very first stage. In this initial period, the kinetics of degradation showed a linear increase in conjugated sequences. The influence of additives (calcium stearate, zinc stearate and zinc chloride) on the resistance of PVC to thermal stress was investigated by the same method, and results are compared with those for unstabilised PVC. A positive development in thermal behaviour was observed upon stabilisation, and predicted reaction mechanisms for single components were confirmed. 9 refs.
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