Effect of Plasticizers on the Thermal Decomposition of Chlorinated Polyvinylchloride

摘要

Plasticised samples of chlorinated PVC(CPVC)were investigated by using TGA and DSC.The plasticisers used were dioctyl phthalate(COP),alkyldiaryl phosphate ester (Santiciser 2148)and triaryl phosphate ester (Reofos 50).TGA experiments in nitrogen showed one major decomposition stage,involving dehydrochlorination,and a minor pyrolysis reaction of the hydrocarbon residue.In contrast to the three stages previously reported to occur in the non-plasticised-stabilised CPV C,TGA in air showed two distinctive decomposition stages for the plasticised CPVC samples.