Poly(ethylene terephthalate) films modified by UV-induced surface graft polymerization of vanillin derived monomer for antibacterial activity

•Elaboration of new antibacterial PET surfaces from vanillin-derived monomer.•Photoinitiator grafting through an aminolysis treatment.•Photopolymerization of a vanillin-derived biobased monomer.•High performances in adhesion inhibition against gram-positive strains.