AbstractGraft copolymerization of poly(vinyl chloride) (PVC) partially dehydrochlorinated by heating in nitrobenzene was investigated using styrene as monomer and anhydrous AlCl3as cationic initiator in the temperature range of 0–35°C. Effect of monomer, catalyst, and PVC concentration on graft‐on was also evaluated. Introduction of labile sites in PVC by partial dehydrochlorination in nitrobenzene resulted in an increase in graft‐on. Intrinsic viscosity of PVC–g–polystyrene in THF initially increased with an increase in graft‐on. At higher graft‐on a decrease in
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