Compósitos de PEBD com fibras de papel reciclado de embalagens cartonadas longa vida

Abstract

Search new recycling ways and new materials from the mixture of materials that have been used it is important to ensure the sustainability and continuity of the product chain. This study was conducted in order to find alternatives to recycle the paper from the long life carton packages, through the incorporation of fibers in a matrix of recycled polyethylene. For this research was added 5%, 10%, 15% and 20% of cellulose fibers in the polymer matrix by in single screw extrusion process and conformation of specimens by injection. To check the features obtained from the formulations prepared samples were subjected to tensile test and bending, morphological characterization by scanning electron microscopy, infrared and DSC tests as the Hot Stage. Through tensile and bending tests was possible to prove the increase in stiffness and the yield stress of the polymer with the addition of cellulose fibers. FTIR analysis showed that degradation of LDPE used in the research, coming from industrial waste, was not significant. In terms of thermal characterization, performed by testing DSC on Hot Stage, the presence of cellulose fibers neither affected the melting temperature of the material nor submitted nucleating effect, did not changing the temperature of crystallization of the matrix LDPE.