Metallocene Polyolefins Reinforced by Low-Entanglement UHMWPE through Interfacial Entanglements

By introducing low-entanglement UHMWPE, the mechanical properties of polyolefins are improved to varying degrees. For polypropylene, lack interaction between UHMWPE and polypropylene results in an unsatisfactory reinforcement effect, disentangled state makes it easier for particles form defects driven by a chain explosion. In contrast, regarding polyethylene elastomer containing ethylene segments, plays better role reinforcement. A series measurements including scanning electron microscopy (SEM), rheological measurements, differential calorimetry (DSC), measurement were used investigate mechanisms different enhancement effects. It originates from interdiffusion entanglement forming segments across interface, endowing material with aggregated defect structures. instance, EPDM possesses higher optimal dosage reflected good interfacial particles, leading significant optimized performance.