期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 251, 期 2, 页码 278-283出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/jcis.2002.8385
关键词
grafting; APTES; AFM
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. (C) 2002 Elsevier Science (USA).
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