Abstract
Glass fiber-reinforced high-density polyethylene of varying concentrations was mixed with ethylene copolymer and maleic anhydride-grafted polypropylene (coupling agents) separately. The viscosity, tensile strength, and stress relaxation properties of the composites were investigated. The orientation and anisotropy of glass fibers were studied using micro computed tomography scanner. It was found out that the orientation and anisotropy of fiber are strongly affected by the increase in glass fiber concentration. (C) 2014 Society of Plastics Engineers