Deformation behavior and mechanical properties of hard elastic and porous films of polyethylene

Hard elastic samples of linear polyethylene were prepared by melt extrusion at a high velocity of the melt flow and by subsequent annealing of crystal lized samples. The deformation behavior of hard elastic samples obtained by annealing of as-spun samples at different temperatures has been analyzed a t uniaxial extension resulting in formation of porous structure. Mechanical properties of microporous films in the longitudinal and transverse directi ons have been investigated. Composite systems consisting of a microporous p olyethylene film and a thin layer of an electroconducting polymer have been prepared. Mechanical properties of composite systems, such as elastic modu lus, tensile strength, and break elongation, have been compared with the pr operties of polyethylene substrates.