Injection molding and mechanical properties evaluation of short jute fiber polypropylene reinforced composites

Abstract

Composites with polypropylene (PP) and 2 wt% NaOH treated jute fibers were prepared by the injection molding technique. In order to improve the affinity and adhesion between the reinforced jute fiber and the polymer matrix (polypropylene) during manufacturing, maleic anhydride grafted polypropylene (MAPP) as a coupling agent has been employed. Tensile tests were carried out to evaluate the composite mechanical properties. The tensile test results showed the composite to have higher strength and modulus than pure polypropylene (PP). In addition, strength and modulus were found to be influenced by the variation of MAPP contents (1%, 2%, and 3%). The tensile strengths were improved by 19.3%, 21.7%, and 23.8%, respectively, compared with the raw PP. The tensile moduli were improved by 110.7%, 122.7%, and 148%, respectively, compared with the raw PP. © 2010 WIT Press.