In order to realize the insert injection molding of polyethylene(PE) single-polymer composite(SPC),it is important to study the interfacial morphology of the matrix and reinforcement. In this study,the ultra-high molecular weight polyethylene(UHMWPE) fiber was used to reinforce low density polyethylene(LDPE) matrix. Thermodynamic properties of the fiber and matrix were tested by DSC. Polarizing microscope was adopted to simulate the molding process of PE SPC. The effects of different factors on the interfac...