Obtenção e caracterização: compósito de poli (ácido lático) com carga de resíduo de madeira de pinus

Abstract

The present work aimed to characterize and evaluate the use of wood waste discarded from the framing industry as filler together with the Poly(lactic acid) polymer, seeking to study the effects of the matrix/filler interaction. Wood waste, as a biodegradable material, is viable to replace non-renewable loads that are more harmful to the environment. The compound was processed using a thermomechanical mixing technique, making it similar to the industrial process of mechanical polymer extrusion. The compounds were made with 5% and 10% mass/mass ratios. The polymer and compounds obtained were characterized by mechanical tensile tests. In the mechanical tensile tests carried out, a drop in the maximum tensile stress was noted in all samples and regarding the specification modulus of the compounds, some samples showed significant reductions of 12% and 25%. In this way, the addition of the filler left the compounds relatively less rigid and brittle, supporting greater deformations and consequently greater resistance to impacts, making PLA more attractive for many applications that occur from a polymer originating from renewable sources, which can be used in the automotive and of consumer goods.