Abstract
As in dilute solution, sodium thiophenate reacts with poly(vinyl chloride) during processing operations, substitution of chlorine atoms is very rapid and the conversion exceeds 90%. The stereoselectivity of this reaction with respect to TG conformations of iso and heteroactic triads is the same during processing operations as in dilute solution. Stearic acid as lubricant on calcium stearate as stabiliser decreases the substitution yield. Substitution of labile chlorine atoms by thiophenate groups increases the thermal stability of PVC.
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