Effects of Sawdust Addition on recycled HDPE reinforced with Cellulose Fiber: Mechanical and Morphological Analysis with Maleic Anhydride Coupling Agent

This study investigates the mechanical and morphological properties of biocomposites reinforced with natural fibers and wood-derived materials. Various formulations incorporating recycled high-density polyethylene (rHDPE), softwood pulp (SWP), sawdust, and coupling agents were extruded using both single-screw and twin-screw extruders. The addition of lubricants and coupling agents when compounded with the biocomposites showed improvements in processing stability, tensile properties, and dimensional stability. Differences in impact strength and tensile modulus were noted, highlighting the importance of fiber-matrix interaction and extrusion parameters.