STUDY OF GRAFTED SILANE MOLECULES ON SILICA SURFACE WITH AN ATOMIC-FORCE MICROSCOPE

Citation
S. Gauthier et al., STUDY OF GRAFTED SILANE MOLECULES ON SILICA SURFACE WITH AN ATOMIC-FORCE MICROSCOPE, Langmuir, 12(21), 1996, pp. 5126-5137
Citations number
34
Categorie Soggetti
Chemistry Physical
Journal title
ISSN journal
07437463
Volume
12
Issue
21
Year of publication
1996
Pages
5126 - 5137
Database
ISI
SICI code
0743-7463(1996)12:21<5126:SOGSMO>2.0.ZU;2-3
Abstract
Atomic force microscopy is employed to study the grafting process on a silica surface of several kind of silane molecules in anhydrous and a queous solutions: mono- and trichlorosilanes and mono- and triethoxysi lanes. A systematic study of the adhesive interaction and the friction behavior is performed. With the anhydrous silane solutions, we show t hat only the trichlorosilane molecules are able to graft the silica su rface, while with the aqueous silane solutions, except for the monoeth oxysilane, the silica surface was always grafted. This study provides further support of the use of tribological properties to investigate a surface modification. We show that the influence of the tip velocity on the friction behavior is a powerful way to discriminate between the silica surface and the grafted one.