Grafting onto wool. XIV. Graft copolymerization of vinyl monomers by use of Mn(AcAc)3as an initiator

摘要

AbstractEthyl acrylate (EA), butyl acrylate (BA), and vinyl acetate (VAc) have been graft copolymerized onto Himachali wool fiber in an aqueous medium by using Mn(AcAc)3as an initiator. Graft copolymerization was studied at 45°, 55°, 65° and 75°C for various reaction periods. Percentage of grafting and percent efficiency were determined as functions of concentration of monomer, concentation of initiator, concentration of nitric acid, time, and temperature. Several grafting experiments were carried out in the presence of various additives which included: (i) pyridine and (ii) Et3N. EA, BA, and VAc were found to differ in reactivity towards grafting and followed the order: EA>BA>