F-IMPLANTATION FOR ENHANCING SURFACE HYDROPHOBICITY OF MEDICAL POLYMETHYLMETHACRYLATE( ION)

Authors
LIU BJ LI DJ GU HQ
Citation
Bj. Liu et al., F-IMPLANTATION FOR ENHANCING SURFACE HYDROPHOBICITY OF MEDICAL POLYMETHYLMETHACRYLATE( ION), Chinese Physics Letters, 15(9), 1998, pp. 662-664
Citations number
9
Categorie Soggetti
Physics
Journal title
Chinese Physics Letters → ACNP
ISSN journal
0256307X
Volume
15
Issue
9
Year of publication
1998
Pages
662 - 664
Database
ISI
SICI code
0256-307X(1998)15:9<662:FFESHO>2.0.ZU;2-T
Abstract
The surface of medical polymethylmethacrylate intraocular lens was tre ated by F+ ion implantation at 80 keV with various doses. Hydrophobici ty test showed that contact angle was increased from 68.5 degrees to 8 3.5 degrees with increasing dose. No appreciable changes in optical tr ansparency and tensile strength were observed. X-ray photoelectron spe ctroscopy and electron spin resonance analysis indicated that F+ ion i mplantation broke some original O-containing groups to form some new C -F bond and radicals on the surface.