Radiation damage and wettability change of low energy C+ implanted polytetrafluoroethylene

Citation
Jz. Zhang et al., Radiation damage and wettability change of low energy C+ implanted polytetrafluoroethylene, MAT SCI E B, 84(3), 2001, pp. 200-204
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
0921-5107 → ACNP
Volume
84
Issue
3
Year of publication
2001
Pages
200 - 204
Database
ISI
SICI code
0921-5107(20010720)84:3<200:RDAWCO>2.0.ZU;2-Q
Abstract
The surface modification of polytetrafluoroethylene (PTFE) was carried out by carbon ion implantation. The influence of implantation parameters was in vestigated by varying ion dose over a wide range. The samples were implante d with 20 keV carbon ion with doses from 5 x 10(15) to 5 x 10(17) ions cm(- 2), and examined by ESCA, XRD, SEM, and wettability. Five chemical bonds we re formed on the surfaces of as-implanted samples, and their content change d as a function of ion dose. The crystallinity of the as-implanted samples increased gradually with increasing ion dose. Various radiation damage stru ctures were observed. The values of droplet contact angle of the as-implant ed samples increased gradually with increasing ion dose, and was very sensi tive to the environmental humidity under which the droplet contact angle wa s measured. The experimental results show that the surface chemical bond, c rystallinity, morphology, and wettability of as-implanted PTFE samples are closely dependent on the carbon ion dose. (C) 2001 Elsevier Science B.V. Al l rights reserved.