RADIOCHEMICAL GRAFTING OF STYRENE ONTO POLYVINYLPYRROLIDONE

In this study radiochemical grafting in chloroform solution was used t o control the hydrophilic character of a polymer such as poly(vinylpyr rolidone). The aim was to synthesize a new type of co-polymer, having good possibilities of practical applications such as the preparation o f ultrafiltration membranes by the phase inversion technique. PVP (hig hly hydrophilic polymer) has been grafted with different amounts of St yrene by means of gamma-rays from Co-60, in order to get water insolub le copolymers. The influence of dose, solutions composition and concen tration was studied. The insoluble fractions were separated and charac terized by i.r. and HPLC techniques.