1. Plasma Deposition Evaluations

2. Plasma Deposited Nano-coatingsMethod to modify the hydrophobicityof silica powder and polymermembrane substrates by plasmaapplication of a polymeric nanocoating.Low temperature vacuum plasmadeposition of an extremely thinpolymeric coating on substrates. 3. Plasma Variables Exposure time to plasma (T1, T2, T3, T4) Vacuum pressure (P1, P2, P3) Applied voltage(V1, V2, V3) Monomer flow rate (F1, F2) Monomer type (M1, M2, M3) 4. Powder Coating Plasma SystemVacuum Vessel Gas Plasma Generator 5. Plasma Coating Vessel for Powder 6. Powder Plasma Vessel 7. Powder Plasma Vessel 8. Plasma Generator Screen 9. Silica Powder Plasma SystemNote: Alternate plasma power source can be direct current power 10. Membrane Coating Plasma SystemGas Plasma GeneratorVacuum Vessel 11. Sheet Coating Plasma System 12. Sheet Coating Plasma System 13. Sheet Coating Plasma System 14. Gas Plasma Generator 15. Sheet Coating Plasma SystemNote: Alternate configuration applies vertical electrodes and spooled sheet 16. Polymer Sheet1 No monomer2 Medium Film3 Thin Film4 Low voltage5 untreated 17. Water Contact AngleUntreated#1#3# 4 18. Contact angle on treated sheets708894.2 94.297.691.782.60102030405060708090100untreated #1 #2 #3 #4 #5 #6ContactAngle(Deg.)Water contact angle measurement for low temperature treated polymer film 19. Discussion