Abstract
Several low-temperature radio-frequency (RF) plasma surface treatments were performed on ultra-high molecular weight polyethylene (UHMWPE) used in biomedical applications. Process gases included Ar, C3F6, CH4, hexamethyldisiloxane (HMDSO), and NH4. These treatments were carried out at pressures in the range of 64–400 mTorr, RF powers of 240–1200 W, and temperatures well below the melting point of UHMWPE. X-ray photoelectron spectroscopy (XPS) was used to obtain information about the surface characteristics of UHMWPE treated with the HMDSO, C3F6, and CH4 gases as a function of treatment conditions. XPS spectra of UHMWPE treated with C3F6 and CH4 and exposed to a laboratory environment for different time periods were examined in order to assess the stability of these treatments. It was found that for the C3F6 process gas the amount of fluorine at the surface decreased over time, whereas the oxygen content of the CH4 treated samples increased as a function of time. In vitro cytotoxicity of Ar, C3F6, CH4, and NH4 plasma treated samples was studied in light of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) test results. The hemolytic nature of the various plasma treatments was evaluated using standard hemolysis tests. All of the samples tested in this study exhibited no cytotoxic and negligible hemolytic effects. The process parameters for several low-temperature plasma treatments demonstrating chemical and structural stability and good biocompatibility are discussed in conjunction with the broad applicability to other biomedical polymers. © 2001 Kluwer Academic Publishers
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References
C. Klapperich, K. Komvopoulos and L. Pruitt, Proceedings of the Materials Research Society 550 (1999) 331.
C. Klapperich, K. Komvopoulos and L. Pruitt, Journal of Tribology 121 (1999) 394.
C. Klapperich, A. Bellare, K. Komvopoulos and L. Pruitt, 11th International Conference on Deformation, Yield and Fracture of Polymers, Cambridge, UK, 10–13 April 2000, p. 438.
S. W. Kim and H. Jacobs, Blood Purification 14 (1996) 357.
S. W. Kim and J. Feijen, CRC Critical Reviews in Biocompatibility 1 (1985) 229.
Y. S. Yeh, Y. Iriyama, Y. Matsuzawa, S. R. Hanson and H. Yasuda, Journal of Biomedical Materials Research 22 (1988) 795.
B. D. Ratner, S. C. Yoon and N. B. Mateo, in “Polymer Surfaces and Interfaces”, edited by W. J. Feast and H. S. Munro, (John Wiley, Chichester, UK, 1987) p. 231.
K. E. Geckeler, R. Gebhardt and H. Grunwald, Naturwissenschaften 84 (1997) 150.
J. Piglowski, I. Gancarz, J. Staniszewska-Kuls, D. Paluch, M. Szymonowicz and A. Konieczyn, Biomaterials 15 (1994) 909.
P. Favia, R. D'Agostino and F. Palumbo, Proceedings 23rd International Conference on Phenomena in Ionized Gases, Toulouse, France, 17–22 July 1997, p. 199.
D. G. Castner, V. H. Perez-Luna, P. Favia and B. D. Ratner, 21st Annual Meeting of the Society for Biomaterials, San Francisco, CA, 18–22 March 1995, p. 218.
E. J. Charlson, E. M. Charlson, A. K. Sharma and H. K. Yasuda, Journal of Applied Polymer Science: Applied Polymer Symposium 38 (1984) 137.
D. Briggs, in Practical Surface Analysis, edited by D. Briggs and M. P. Seah, (John Wiley, New York, 1990) p. 437.
B. D. Ratner, D. Leach-Scampavia and D. G. Castner, Biomaterials 14 (1993) 148.
T. Mosmann, Journal of Immunological Methods 65 (1983) 55.
J. C. Park, D. H. Lee and H. Suh, Yonsei Medical Journal 40 (1999) 530.
R. B. Timmons, Chemistry of Materials 3 (1991) 575.
M. D. Ries, K. Weaver, R. M. Rose, J. Gunther, W. Sauer and N. Beals, Clinical Orthopaedics and Related Research 333 (1996) 87.
J. T. Koberstein, MRS Bulletin 21 (1996) 19.
M. Goldman, M. Lee, R. Gronsky and L. Pruitt, Journal of Biomedical Materials Research 37 (1997) 43.
M. Goldman and L. Pruitt, Journal of Biomedical Materials Research 40 (1998) 378.
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Klapperich, C., Pruitt, L. & Komvopoulos, K. Chemical and biological characteristics of low-temperature plasma treated ultra-high molecular weight polyethylene for biomedical applications. Journal of Materials Science: Materials in Medicine 12, 549–556 (2001). https://doi.org/10.1023/A:1011232032413
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DOI: https://doi.org/10.1023/A:1011232032413