Graft Polymerization of Acrylic Acid and Acrylamide onto BOPET Corona Films

The graft polymerization of acrylic acid ( A ) and acrylamide (B) was carried out onto bi- ori ented polyester BOPET corona film. The influence of monomer concentration, reducer concentration and reaction time on the graft polymerization was investigated. The surface tension of the films increased with an increase of monomer concentration, till the concentration of monomer A reached 1.5 × 10-2 g/mL and the concentration of monomer B reached 4.0× 10-2 g/ mL. The surface tension of the films reached a maximum value at 7 × 10 4 M of reducer concentration and subsequently decreased with further increase in reducer concentration. The surface tension of the films increased with the increase of the reaction time apparently within 50min. The grafted corona BO PET films were characterized with IR and XPS. The presence of graft on the film surface was confirmed. The atten uation experiments on grafted corona BOPET films in air at 50℃ and in water were carried out to investigate the persistence of graft polymerization of acrylic acid and arylamide onto BOPET corona films.