DECHLORINATION RATES OF POLYVINYL-CHLORID E WITH WATER AND AQUEOUS-SOLUTIONS OF ORGANIC-SOLVENTS

Polyvinyl chloride (PVC) pellets were subjected to dechlorination in a batch reactor with, separately, water and aqueous solutions respectiv ely of tetrahydrofuran, cyclohexanone and methanol. In the temperature range of 230-280-degrees-C, dechlorination rate constants were obtain ed under the assumption of first-order kinetics with respect to the ch lorine content in the solid sample. The rate constant for dechlorinati on with water (1 ml) + THF(1 ml) was found to be nearly three times th at with water, although they have almost the same activation energy, 2 05kJ/mol.