EFFECT OF THE DEFORMATION ROUTE ON THE PROPERTIES OF POLYTETRAFLUOROETHYLENE AFTER EQUAL CHANNEL ANGULAR EXTRUSION
In the case of polytetrafluoroethylene (PTFE), the abilities of different routes of deformation to modify the structure and properties of semicrystalline polymers in the course of equal-channel angular (ECAE) and equal-channel multiple-angular (ECMAE)extrusion have been studied. It is shown that the route A (ECAE) provides high anisotropy of mechanical properties of extruded polymers and the route C (ECAE and ECMAE) demonstrates low degree of anisotropy. Route E (ECMAE) compared with the route C allows creation of better set of physical and mechanical properties at lower values of accumulated strain and extrusion pressure.