Publication
Title
Influence of water in the reaction of $\gamma$-aminopropyltriethoxysilane with silica gel : a Fourier-transform infrared and cross-polarisation magic-angle-spinning nuclear magnetic resonance study
Author
Abstract
 Silica gel has been modified with gamma-aminopropyltriethoxysilane under varying conditions, controlling the influence of water in the different modification stages, Diffuse reflectance infrared Fourier-transform (DRIFT) spectra revealed the influence of surface water in the reaction stage and of air humidity in the curing stage. These results were confirmed and refined by Si-29 and C-13 cross-polarisation magic-angle-spinning nuclear magnetic resonance (CPMASNMR) spectroscopy. Combining the results of both techniques, four modification structures present on the silica surface are proposed, depending on the conditions used.
Language
English
Source (journal)
Journal of the Chemical Society : Faraday transactions: physical chemistry and chemical physics / Bunsengesellschaft für Physikalische Chemie. - London, 1990 - 1998
Publication
London : Royal Society of Chemistry , 1992
ISSN
0956-5000 [print]
1364-5455 [online]
Volume/pages
88 :21 (1992) , p. 3197-3200
ISI
A1992JX92300013
Full text (Publisher's DOI)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address