Ethylene and p-allyltoluene were copolymerized in the presence of metallocene catalyst rac-ethylenebis-(indenyl)zirconium dichloride—MAO．The polyethylene(PE)copolymer prepared was brominated using radical inifiator and N—bromosuccinimide．1H-NMR showed that each benzyl site was substituted with one bromine atom．Methyl mathacrylate and t-butyl acrylate were polymerized via ATRP process with brominated PE copolymer as macromolecular initiator and CuCl／N．N

N'

N'

N''-pentamethyldiethylenetriamine as catalyst and the corresponding graft copolymer was synthesized．Polyethylene—graft-poly(t-butyl acrylate)was subsequently converted by hydrolysis with hydrochloric acid to polyethylene—grafl—poly(crylic acid)

which was father converted to polyethylene—graft—poly(sodium acrylate)hy reacting with sodium hydroxide．Mulao test indicated that the polarity of polyethylene graft eopolymers relative to that of polyethylene was improved greatly．