Effect of Surface Coating and Plasma Treatment on Mechanical Properties of Wood Plastic Composites

Mechanical properties of plasma-irradiated and surface-coated wood plastic composites (WPCs) have been investigated in this paper. WPCs were developed by injection molding technique using fiber (WF) as reinforcement polypropylene (PP) matrix. The short, discontinuous WF was compounded with thermoplastic PP at varying weight fractions 0 wt%, 25 wt% (WP25), 50 (WP50) to yield tensile test specimens accordance JIS K7139-A32 standards. Subsequently, plasma treatment performed on the test-pieces, followed surface coating immersion acrylic resin liquid containing homogeneously dispersed TEMPO-oxidized cellulose nanofibers (CNF). results indicate an increase roughness after irradiation, but paint CNF decreased their ∼50% comparison untreated specimens. Plasma also increased strength neat PP, WP25 WP50 5.4–7.1%, 3.5–3.7% 3.0–3.6%, respectively, whereas fracture strains tended decrease. Compared specimens, generally displayed higher strength. This finding is a corroboration that observed highly contingent adhesion between specimen layer than improvement roughness. Thus, it inferable could be great importance enhancing mechanical performance WPCs.