The ultradrawing behavior of ultrahigh-molecular-weight polyethylene/low-molecular-weight polyethylene film specimens prepared at various concentrations and formation temperatures was studied. The critical draw ratio (Drc) of UL−0.7 film specimens was found to depend significantly on the formation temperature used to prepare the film specimens. At any fixed drawing temperature, the Drc values of UL−0.7 specimens prepared at various formation temperatures increased significantly as the formation temperatures were reduced. In fact, with an optimum drawing temperature of 95°C, the Drc values of UL−0.7 specimens prepared at a formation temperature of 0°C reached 488, about 50% higher than that of UL−0.7 specimens prepared at a formation temperature of 95°C. These interesting phenomena were investigated in terms of the thermal, birefringence, and tensile properties of these undrawn and drawn UL−0.7 specimens.
Journal of Applied Polymer Science 89(14), pp.3728-3738