A new route for chitosan immobilization onto polyethylene surface

► New route for polysaccharide immobilization applying plasma treatment. ► Introducing oxygen-based functional groups on the polymeric surface. ► Increase of surface roughness as well as surface free energy. ► Antibacterial efficiency indicating by effective bacterial inhibition zone (35 mm2 for E. coli and 275 mm2 for S. aureus).