Fluorination of Plastic Film Surface with Several Agents

Abstract

Low surface free energy of the polymer surface leads to water repellency and low frictionalcoefficient. Then, the surface modification was carried out using several fluorination agents formodified polyethylene surface, which was treated in advance by corona discharge method.Thecontact angle of water increased by fluorination and reached to 106.7 using fluorinated silanecoupling agent. The surface free energy was 13.8mJ/m2, and is almost equal to that of polytetrafluoroethylene. Further, it was proven that the reduction of the frictional coefficient was possible by fluorination. These effects were more effective in the fluorination agent having the completely fluorinated end group.