Adhesion Improvement of Biomedically Adaptable Lamination Sheets of PTFE and Surface Activated PF irradiated by EB

Abstract

An optimal condition to improve the adhesion of PTFE/PE lamination of Polytetrafluoroethylene (PTFE) untreated and Polyethylene (PE) activated by homogeneous low voltage electron beam irradiation (HLEBI) under each O₂ partial pressure in N₂ gas atmosphere prior to hot-press was studied. Its adhesive force of PTFE/PE with 0.22 MGy-HLEBI under optimal O₂ partial pressure (20000 ppm) in protective N₂ atmosphere was 14.6 N/m, which was about 2.2 times higher than that (6.7 N/m) of PTFE/PE with 0.22 MGy-HLEBI under low O₂ partial pressure (200 ppm) in N₂.