Plasma and fluorination combination for stable multifunctionality of LDPE packaging films
Résumé
Low Density Polyethylene (LDPE) films are treated by a combination of plasma treatment followed by direct fluorination. Plasma treatment is carried out either with ion bombardment or reactive conditions according to the gas(es) used. The properties of samples prepared by the two combinations (i) ion bombardment/fluorination; and (ii) reactive plasma/fluorination are compared to the films treated only with single fluorination or plasma. Combined treatment results in printability and barrier properties toward O2 enhancement and the maintenance of the barrier properties toward water. Contrary to the direct fluorination only, the two combinations allow stable surface properties to be achieved.