Photoinduced graft polymerization of acrylic acid on the surface of polypropylene films from a thin layer of nondeaerated aqueous solution of the monomer

Photoinduced graft polymerization of acrylic acid on the polypropylene film surface containing a preliminarily adsorbed photoinitiator (benzophenone) from a thin layer of a nondeaerated aqueous solution of the monomer, isolated from the contact with atmospheric oxygen, was studied. Data were obtained on how the amount of the grafted polymer and the wetting angle for water on the film surface depends on the duration of the UV irradiation and on the monomer solution layer thickness. These data are compared with the results previously obtained for the photoinduced grafting of polyacrylic acid on polyethylene films.