Surface Treatment of Polymers by Simultaneous Exposure to Vacuum UV and Nanometer-Sized Particles in Helium Atmosphere

摘要

A new surface treatment for polymers in helium at atmospheric pressure for making bonds between surfaces and painting over polymer surfaces was demonstrated. In one-atmospheric helium gas, which was transparent for vacuum UV light at wavelengths between 60 and 80 nm, polymer surfaces were exposed simultaneously to vacuum UV (VUV) and ablated particles from the plasma on a carbon target irradiated with a high-intensity pulse YAG laser. Considering the breakdown threshold and VUV intensity, the optimum irradiation intensity of YAG laser was about 4GW/cm~2. The adhesive properties of polymer surfaces exposed to VUV and particles ablated by 4 GW/cm~2 laser irradiation in one-atmospheric helium gas were improved. This result should expand new applications of polymers, and apply to almost all polymers scientifically and industrially.