Thermal, rheological, and mechanical characterization of compression and injection molded ultra‐high molecular weight polyethylene, high density polyethylene, and their blends

Tensile and impact test samples of ultra-high molecular weight polyethylene (UHMWPE), high-density (HDPE), their blends at various UHMWPE/HDPE ratios were prepared via compression molding injection for thermal, rheological, mechanical characterization. A twin-screw extruder with either a tapered die air-cooling or regular was used to compound extrude the materials prior pelletization molding. To best our knowledge, there has been no publication on pelletizing neat UHMWPE using extruder. The differential scanning calorimetry analysis suggested occurrence re-crystallization co-crystallization all blends. rheology confirmed that exhibited solid-like behavior degree compatibility increased increasing HDPE content in strong synergistic effect observed possessed higher tensile strength than counterparts. molded (95/5) extruded yielded highest (50.1 MPa), which about 40% samples. composition these parts is 10% HD 50% HD, respectively.