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Theses

Interaction Organosilanes / Silice de précipitation
Du milieu hydro-alcoolique au milieu aqueux

Abstract : This work deals with the functionalisation in hydroalcoolic and aqueous medium of silica
nanoparticules by organosilanes. The nature of the bonds formed with the surface is also
studied.
Chapter I reports the bibliographical study devoted to the chemical nature of the surface of
silica and the reactivity of the organosilanes.
Chapter II deals with the study by solution 29Si NMR in solution of the reactivity of the
precursors : trimethyletoxysilane (TMES), dimethyldiethoxysilane (DMDES),
methyltriethoxysilane (MTES) and mercaptopropyltriethoxysilane (SHPTES). A pertinent
sequence, 29Si-1H DEPT, has been adapted to these systems.
Chapter III points to the heart of the problems : the chemical modification of surface of silicas
by the organoalcoxysilanes. After having highlighted the covalent character of the formed
connection, the influence of many experimental parameters on the grafting as well as the
hydrophobic properties of the particles is studied.
Document type :
Theses
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https://tel.archives-ouvertes.fr/tel-00012113
Contributor : Sophie de Monredon - Senani <>
Submitted on : Tuesday, April 11, 2006 - 1:04:04 PM
Last modification on : Tuesday, September 22, 2020 - 3:58:43 AM
Long-term archiving on: : Saturday, April 3, 2010 - 10:14:02 PM

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  • HAL Id : tel-00012113, version 1

Citation

Sophie de Monredon - Senani. Interaction Organosilanes / Silice de précipitation
Du milieu hydro-alcoolique au milieu aqueux. Matériaux. Université Pierre et Marie Curie - Paris VI, 2004. Français. ⟨tel-00012113⟩

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