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MODIFICATION OF POLYMERIC MATERIAL SURFACES WITH PLASMAS* - Page 4[Technical Publications][Back] SUMMARY The modification that occurs to a polymeric material by exposure to a plasma is largely determined by: (1) the process gas(es), (2) the exposure time to the plasma, (3) the energy and power densities, and, to a lessor degree, (4) the original composition of the surface. Types of modifications span from relatively simple surface morphological roughening or smoothing changes, to complex grafting of radically different functional groups or molecular moieties, to totally enveloping coatings that completely alter the surface properties of the bulk material. Free radical chemistry appears to be the dominant mechanistic pathway for achieving most surface modifications. In spite of the high complexity of the ensuing chemistry in a typical plasma, it is possible to tailor the process to perform specific targeted changes to polymeric surfaces. REFERENCES 1. S. Kolluri, HIMONT Plasma Science Technical Note (1992, unpublished). 2. T. Yasuda, T. Okuno, M. Miyama, H. Yasuda, Polymeric Mat Sci. Eng, 62 (1990) p. 457. 3. S. Kaplan, P. Rose, P. Sorlien, 0. Styrmo, A AUTOPLAS '92, (Schotland Group, Dusseldorf, 1992) p. 255. 4. S. Kaplan and M. Hozbor, Society of Plastic Engineers 1995 RETEC Ypsilanti, MI, Mar. 1995 (ECM Inc., Plymouth, Michigan, 1994) p. 23. 5. Y. Pan, E.Barrios, and D. Denton, (private communication 1996). 6. R. Engelman and H. Yasuda, Polymeric Mat. Sci. Eng. 62 (1990) p. 19. 7. W. Gombotz and A. Hoffman, Polymeric Mat. Sci. Eng. 56 (1987) p. 720. 8. H. Griesser and R. Chatelier, Polymeric Mat. Sci. Eng. 62 (1990) p. 274. 9. D. Schram, G. Kroesen, and J. Beulens, Polymeric Mat. Sci. Eng. 62 (1990) p. 25. 10. G. Smolinsky and M. Vasile, Symposium on Plasma Chemistry of Polymers, edited by M. Shen (Marcel Decker, Inc., New York, 1976) p. 105. 11. H. Yasuda, Plasma Polymerization (Academic Press, Orlando, 1985). 12. R. d'Agostino, F. Fracassi, F., and F. Illuzi, Polymeric Mat. Sci. Eng. 62 (1990) p. 15 7. 13. N. Morosoff, B. Crist, M. Bumgarner, T. Hsu, T., and H. Yasuda, Symposium on Plasma Chemistry of Polymers, edited by M. Shen (Marcel Decker, Inc., New York, 1976) p. 83. Don M. Coates is a Senior Research Associate with DuPont Central Research and Development, Materials Science and Engineering Division. He received his PhD in Physical Organic Chemistry from Florida State University. Stephen L. Kaplan received his BS degree in Plastics Engineering from Lowell Technological Institute. In 1985 he founded Plasma Science, Inc., a company specializing in the use and the manufacture of gas plasma systems for the surface treatment of plastics. In 1996, he established 4th State. Inc. [Technical Publications][Back] * Chapter IV of Plasma Processing of Advanced Materials, edited by George A. Collins and Donald J. Rej, MRS Bulletin, August 1996 |
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