Study of two grafting methods for obtaining a 3-aminopropyltriethoxysilane monolayer on silica surface.
J Colloid Interface Sci
; 251(2): 278-83, 2002 Jul 15.
Article
en En
| MEDLINE
| ID: mdl-16290731
ABSTRACT
In order to establish a 3-aminopropyltriethoxysilane (APTES) grafting procedure with limited number of APTESs noncovalently linked to the silica surface, two different methods of grafting (in acid-aqueous solution and in anhydrous solution) were compared. The grafted surface state was investigated by atomic force microscopy (AFM). The stability of the grafting was checked at different temperatures by AFM. Continuous and plane APTES grafted surfaces were successfully prepared using both grafting preparations. The grafting in an anhydrous solution behaves homogeneously and stably compared to the grafting in an acid-aqueous solution. Moreover, with anhydrous solution, results showed that a unique monolayer of APTES was grafted.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Silanos
/
Dióxido de Silicio
/
Membranas Artificiales
Idioma:
En
Revista:
J Colloid Interface Sci
Año:
2002
Tipo del documento:
Article
País de afiliación:
Francia