Abstract
AbstractThis paper presents a study on the photolysis of PVC in the presence of different types of tin stabilizers. Using physicochemical methods such as ESR spectroscopy, conductivity titration, gel permeation chromatography, and absorption spectroscopy, the mechanism of PVC photolysis has been investigated. ESR spectroscopy shows that during UV irradiation of tin stabilizers, different types of free radicals depending on the chemical structure of the examined compounds are formed. It has been found that the presence of tin stabilizers does not significantly influence the photo‐oxidation and degradation of PVC but influences the crosslinking processes. The authors propose an interpretation of the free‐radical formation during UV photolysis of tin stabilizers and of the crosslinking acceleration mechanism.
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