Photo induced graft co-lymrization of methyl methacrylate absence of photosensitizer using n light as the light source

Abstract

The photo-induced graft polymerization of methyl methacrylate (MMA) to collagen was carried out in aqueous methanol without photosensitizer in the presence of air using direct sunlight as a light source. Direct sunlight of wavelengths longer than 300nm was effective as light source and grafting proceeded very rapidly and efficiently after an induction period of an hour. The percent grafting, efficiency of grafting and the average molecular weights of grafted branches were found to be highest at the lower methanol concentrations. However grafting frequency values were almost identical after a particular interval of time and increased with polymerization time.