Structure and its method for hydrophobic and oleophobic modification of polymeric materials with atmospheric plasmas

A method of fabricating a polymeric material comprising:

• roll-to-roll moving a polymeric material substrate into an atmospheric plasma area;
• generating an atmospheric filamentary discharge plasma with a first plasma working gas so as to irradiate a surface of the substrate and to activate and roughen the surface to create a first rough surface of the substrate;
• exposing the substrate to air after irradiation by the atmospheric filamentary discharge plasma so as to form active peroxide on the first rough surface of the substrate;
• immersing the substrate in a fluorocarbon solution so as to graft at least one of fluorocarbon monomers and fluorocarbon oligomers on the substrate to form a grafted fluorocarbon layer on the first rough surface of the substrate and define a second rough surface having the same roughness as that of the first rough surface of the substrate;
• generating a second plasma with a second plasma working gas so as to create a carbon tetrafluoride plasma and irradiating the carbon tetrafluoride plasma on the grafted fluorocarbon layer to form a fluorocarbon functional group layer on the grafted fluorocarbon layer;
• and
• curing and drying the substrate to generate cross-links in both the grafted fluorocarbon layer and in the grafted fluorocarbon functional group layer and between the grafted fluorocarbon layer and the grafted fluorocarbon functional group layer such that the polymeric material is hydrophobic and oleophobic.