| In this paper, with some kinds of natural abundant polymers, such as starch, bagasse, and acrylic acid as raw materials. Crosslinked polyacrylic acid, crosslinked polyacrylic acid/starch, crosslinked polyacrylic acid/bagasse and crosslinked polyacrylic acid/maleic bagasse were prepared by crossl inking reaction , and the polymer-supported initiators were prepared by introducing peroxyacid groups onto the backbone of the above crosslinked polymer as matrix. The optimum condition of preparation of polymer-supported peroxyacid is listed as follow: the weight of crosslinked polyacrylic acid is 1.0000g, the volumes of catalyst and H2O2 are 6.0mL and 25.0mL respectively, reaction time is 3 hours, the dosage of crosslinking agent is 10%. The more appropriate dosage of catalyst is, the more polymer-supported peroxyacid concentration is.The graft polymerization of acrylic acid and acrylamide onto crosslinked polymer by using the polymer-supported peroxyacid-reductive agent A redox system as an initiator. The influences of reaction time, reaction temperature, concentration of monomer and polymer-supported peroxyacid on graft polymerization were discussed as well. The optimum condition of graft polymerization is listed as follow: temperature of reaction 60℃, time 3 hours, monomer/polymer-supported peroxyacid 38:1(molar ratios), polymer-supported peroxyacid/reductive agent A 4:1(molar ratios). It was found that the maximum grafting degree could approach 515. 4% & 527. 2% and the relevant graft efficiency could approach 98.6% & 84.2% for the acrylic acid and acrylamide respectively. Finally, the graft polymerization kinetics mechanism of acrylamide onto crosslinked polyacrylic acid was also discussed, the graft polymerization rate could be expressed as Rg=K[M] [RC000H]1/2 in the early stage of the reaction, the apparent activation energy of graft polymerization is 8.96KJ/mol, the rate costant of graft polymerization is 7.0670×10-3L/mol·s(as the monomer concentration keeping in constant)and 6.1860×10-3L/mol·s(as thepolymer-supported peroxyacid keeping in constant).Swelling behaviors of resultant graft polymers were investigated in different water solution by varying its temperature,pH value and type of dissolved salts. The study revealed that the swelling rate of the graft polymer increased with the grafting degree increasing, the hydrogel had no response to the changes of temperature except for the mixed monomer. All graft polymers, especially that of acrylic acid, had response to the changes of its pH value and type of salts. The adsorption of Cu(II) and Pb(II) by graft polymer was also studied, the influence of pH value, adsorption time and the dosage of graft polymer on the adsorption of metal ion were discussed. The results showed that the adsorption was performed very fast, the adsorption rate of Cu(II) and Pb(II) approached 100% and 86.5% in 30 minutes, the adsorption of Cu(II) is more outstanding than Pb(II).
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