Abstract
The increasing awareness of the environment protection has contributed to concerns regarding alternative procedures for recycling of plastic wastes. Since chemical processes are high cost, energy and often environment harmful, thermo-mechanical techniques of recycling rises as a good alternative. This research deals with mechanical characterization of thermo-mechanical recycling of composites based on recycled high density polyethylene (HDPE) from post-consumed motor-oil plastic containers as matrix and natural fibers (sisal) as reinforcement. The composites were made by extrusion and then melt blended in a compression mold. The sisal fibers do not contribute to increase tensile strength. As fiber content increases loss of ductility is observed.
Highlights
The environmental problem nowadays is a factor of extreme importance in the industrial world, in the case of plastic processing companies, as efforts are mainly focused on the reduction and recycling of wastes generated during transformation processes and after product end use
It can be seen that the degradation temperature is 300°C, higher than the 133°C of recycled high density polyethylene (HDPE) TM temperature
The sisal/HDPE flexural strength decreases as sisal fibers are added to the matrix
Summary
The environmental problem nowadays is a factor of extreme importance in the industrial world, in the case of plastic processing companies, as efforts are mainly focused on the reduction and recycling of wastes generated during transformation processes and after product end use. In the United States (US), the total of plastic waste produced in 2008 were 30Mt and only 7.1% were recycled[3]. In Brazil, 150kt of waste HDPE are produced per year and only 72t were recycled[4]. Researchers over the last years have focused their studies in finding ways to reprocess that waste plastics as new products[5,6,7,8,9,10]
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