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The Effects of Plasma Surface Treatment on Fluorosilicone Acrylate RGP Contact Lenses  

Jang, Jun-Kyu (Department of Ophthalmic Optics, Kaya University)
Shin, Hyung-Sup (Department of Ophthalmic Optics, Kaya University)
Publication Information
Journal of Korean Ophthalmic Optics Society / v.15, no.3, 2010 , pp. 207-212 More about this Journal
Abstract
Purpose: Rigid gas permeable (RGP) contact lenses, based on fluorosilicone acrylate, were treated with plasma in air. Methods: The chemical compositions were analyzed by using X-ray photoelectron spectroscopy (XPS), the surface morphology and roughness of RGP contact lenses were observed by using atomic force microscopy (AFM), and the wettability changes were estimated by wetting angle measurement. Results: As the contact lenses were treated by the plasma, the F contents decreased significantly, and the O and Si contents increased on the surface. The number of oxygen-containing hydrophilic radicals (C-O and Si-O) increased greatly, the hydrophobic surface decreased, and the wetting angle increased. But the C-O bonds created with exchange of the fluorine did not increase a wettability. The surface compositions were not remarkably changed for the 6 months after plasma treatment, but the wetting angle increased again. Conclusions: It was considered that the improved wettability of the RGP contact lenses of high fluorine content after plasma treatment was affected by the activation of surface, the increase of Si-O, and the decrease of hydrophobic surface.
Keywords
RGP Contact Lens; Wettability; XPS; AFM; Surface Roughness;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Loveridge R., "What's new in the world of RGPs?", Optometry Today, 34-39(May 21, 2004).
2 Power K. H., "These are not your father's RGPs", Eyewitness, First Quarter: 1-4(2000). Available from: URL: http://www.clsa.info/PDF/lQ00P4-8.pdf.
3 한국과학기술정보원, "실리콘 폴리머", 이룸출판사, 서울, pp. 14-19(2002).
4 French K., "Contact lens material properties: Part 3-Oxygen performance", Optician, 230(6030):16-21(2005).
5 Hom M. M., "Manual of contact lens prescribing and fitting with CD-ROM", 3rd ed., Elsevier, Philadelphia, pp. 203-211(2006).
6 Bennett E. S. and Weissman B. A., "Clinical contact lens practice", Lippincoott Williams & Wilkins, Philadelphia, pp. 223-242(2005).
7 Young R. and Tapper T., "Contact lenses: plasma surface treatment", Optician, 48-52(June 7, 2001).
8 Chu P. K., Chen J. Y., Wang L. P., and Huang N., "Plasma-surface modification of biomaterials", Materials Science and Engineering, R 36:143-206(2002).
9 Grobe III G. L., "Surface treatment of fluorinated contact lens materials", U.S. Patent 7094458 B2, 2006.
10 Port M. J. A., "Contact lens surface properties and interactions", Optometry Today, 27-36(July 30, 1999).
11 French K., "Contact lens material properties: Part 1-Wettability", Optician, 230(6022):20-28(2005).
12 Ren L., Yin S., Zhao L., Wang Y., Chen H., and Qu J., "Study on the surface of fluorosilicone acrylate RGP contact lens treated by low-temperature nitrogen plasma", Applied Surface Science, 255:473-476(2008).   DOI   ScienceOn
13 Yin S., Wang Y., Ren L., Zhao L., Kuang T., Chen H., and Qu J., "Surface modification of fluorosilicone acrylate RGP contact lens via low-temperature argon plasma", Applied Surface Science, 255:483-485(2008).   DOI   ScienceOn
14 Shin H. S., Jang J. K., Kwon Y. S., and Mah K. J., "Surface modification of rigid gas permeable contact lens treated", J. Korean Physical Society, 55(6):2436-2440(2009).   DOI   ScienceOn
15 Guruvenket S., Iyer G. R. S., Shestakova L., Morgen P., Larsen N. B., and Rao G. M., "Fluorination of polymethylmethaacrylate with tetrafluoroethane using DC glow discharge plasma", Applied Surface Science, 254:5722-5726(2008).   DOI   ScienceOn
16 Alexander M. R., Short R. D., Jones F. R., Michaeli W., and Blomfield C. J., "A study of $HMDSO/O_{2}$ plasma deposits using a high-sensitivity and -energy resolution XPS instrument: curve fitting of the Si 2p core level", Applied Surface Science, 137:179-183 (1999).   DOI   ScienceOn
17 Roualdes S., Berjoan R., and Durand J., "$^{29}Si$ NMR and Si2p XPS correlation in polysiloxane membranes prepared by plasma enhanced chemical vapor deposition", Separation and Purification Technology, 25:391-397(2001).   DOI   ScienceOn
18 Fakes D., Newton J. M., and Thomas T. R., "The physical characterization of contact lens surfaces by means of surface profilometry", Clinical Materials, 1:109-115(1986).   DOI   ScienceOn
19 "Product guide: boston materials & solutions", Bausch & Lomb, New York, (2009). Available from: URL: http://www.bausch.com/en_US/downloads/ecp/visioncare/BostonProductGuide_NA.pdf.
20 "Boston $XO_{2}$ (hexafocon B) contact lens materials: material safety data sheet", Bausch & Lomb, New York, (2007). Available from: URL: http://www.bausch.com/en_US/msds/rgp/07BosX02(hexafocon_B)_9-4.pdf.
21 Cho J. S., Cho J. S., Beag Y. W., Han S., Kim K. H., Cho J., and Koh S. K., ""Hydrophilic surface formation on materials and its applications", Surface and Coatings Technology, 128-129:66-70(2006).
22 Bodas D. and Khan-Malek C., "Formation of more stable hydrophilic surfaces of PDMS by plasma and chemical treatments", Microelectronic Engineering, 83:1277-1279(2006).   DOI   ScienceOn
23 West A. R., "Solid State Chemistry", 2nd Ed., John Wiley & Sons, West Sussex, pp. 90-95(1999).
24 Bodas D. and Khan-Malek C., "Hydrophilization and hydrophobic recovery of PDMS by oxygen plasma and chemical treatment - An SEM investigation", Sensors and Actuators B., 123:368-373(2007).   DOI   ScienceOn
25 Olah A., Hillborg H., and Vancso G. J., "Hydrophobic recovery of UV/ozone treated poly(dimethylsiloxane): adhesion studies by contact mechanics and mechanism of surface modification", Applied Surface Science, 239:410-423(2005).   DOI   ScienceOn