Valuation Of The Sawdust Stemming From Moroccan Cedrus Atlantica By Introducing It As Charge Into A Matrix Of High-Density Polyethylene

The introduction of the sawdust stemming from the cedar of Atlas as a reinforcement in a matrix plastic to produce a wood plastic composite have been studied. The tensile properties of composites established of sawdust in a matrix of high-density polyethylene (PEHD) were measured; five mass concentrations and three size grades were studied, with the presence of a coupling agent (Maleic anhydride grafted polyethylene, PE-g-MA). The presence of sawdust in the polymeric matrix modifies considerably his mechanical properties, the composite loses in ductility and in tenacity, but its rigidity increases. The tensile strength is lesser than those obtained with the only polymer. The best mechanical properties were obtained with the fine sawdust which can be likened to the wooden floor. It is for the 5 % content that the highest tensile strength was observed and for a 20 % content that the highest Young modulus was recorded.