The surface of polypropylene (PP) film is modified by preirradiation grafting of polyethylene glycol methacrylate (PEGMA) with three kind of different molecular weight.

• 采用预辐射接枝法对预辐射的聚丙烯（PP）膜接枝不同分子量的申基丙烯酸聚乙二醇酯（PEGMA）。