CERIC ION-INTIIATED GRAFTING OF POGY (METHYL METHACRYLATE) ONTO CHITOSAN
Du Xiuying;Zhang Webang;Zhen Hanmin;Xu Jiarei(Materials Science Research Institute,Zhongshan University,Guanzhou)
Poly(methyl methacrylate)was grafted onto chitosan in an acetic acid solution by using the ceric iun as a redox initiator in the presece of 1.0 mol/L sufric acid and nitrogen, The grafting percentage and percentage of homopolymer turned out to be dependent on reactiun temporature,time,and initiator concentration,but were found to be independant of monomer concentration, The apparent activation energy for the grafting reaction was estimated to be 74.4 kJ/mol. The grafted chitosan is insoluble in solvents for chitosan,but shows enhanced swelling in some organic solvents.
【CateGory Index】： O632.52