Polyethylene Low and High Density-Polyethylene Terephthalate and Polypropylene Blend as Matrices for Wood Flour?Plastic Composites

This study present a composite material made of four thermoplastic polymers and wood sawdust. The wood sawdust of size 630, 315, 160 m and plastic waste containing 3, 91 % of polyethylene terephthalate (PET), 87, 62 % of High-density polyethylene (HDPE), 7, 23 % of Low-density polyethylene (LDPE) and 1.21 % of Polypropylene (PP) have been transformed in composites wood/polymer by extrusion. The mechanical and thermal properties have been studied through tensile test and a thermogravimetric analysis. The weight ratio of the cellulosic materials to polymer matrix was 2575 (ww). Morphological study was done on the rupture surface on samples to appreciate the adherence of wood sawdust/matrix. The study shows that the presence of the wood sawdust increases the modulus of elasticity (MOE) of the composite by conferring a better rigidity. Also, we see that wood sawdust increases the thermal stability of the composite.