The structure and thermodynamic characteristics of high-modulus polyethylene obtained by stretching films made of reactor powder

The samples were prepared by stretching films obtained from virgin polyethylene by compression under pressure -400 MPa at 20-120°C. The films were drawn to λ=200 at 120-140°C. The powders of ultra-high molecular-weight polyethylene were synthesized over titanium and vanadium catalytic systems. The samples drawn to λ=70-200 had a Young's modulus of 100-110 GPa and tensile strength of 1.5 GPa. They were characterized by high values if the heat of fusion and melting temperature, as well as by high effective crystallite size in the chain direction