抄録
Methyl methacrylate (MMA) was efficiently graft-copolymerized in aq. FeCl3 solution onto cellulose by the UV irradiation from a high-pressure mercury lamp. While the oxygen removal from the system by means of vigorous evacuation caused the drastic decrease of percent grafting. In this connection PMMA chains prepared in FeCl3-saccharide systems by the UV irradiation were found to scarcely contain saccharide residues at the chain ends, irrespective of the species of the saccharides used. The formation of both Fe2+ and hydrogen peroxide as a result of the irradiation on the reaction systems was confirmed by conducting model reactions. It was suggested from these results that the homopolymerization is initiated with free radicals resulted from the redox reaction between Fe2+ and H2O2, and followed by the grafting via the transfer reaction of the growing homopolymer radicals to cellulose molecules.
