Thermoplastic elastomers have been prepared by blending poly(vinyl chloride) and epoxidised natural rubber in the presence of a plasticiser. The blends were melt mixed using a Brabender torque rheometer. To effect dynamic vulcanisation, varying concentrations of a semi-efficient sulphur curative system were added during the mixing stage. The effectiveness of dynamic vulcanization was studied using a Brabender plastograms, a moving die rheometer, swelling index measurement, and Fourier transform infrared spectroscopy. The values of torque obtained from both rheometers increased with an increase in curative concentration, while the swelling index decreased. The differnce absorbance spectra from the Fourier transform infrared spectroscopy indicated sulphur crosslink formation. Processability studies of the dynamically vulcanised thermoplastic elastomers showed that they have good processing stability and are processible as thermoplastics.