Adsorption behavior of a silane coupling agent onto a colloidal silica surface studied by 29Si NMR spectroscopy
β Scribed by Norihiro Nishiyama; Kozo Horie; Tetsuo Asakura
- Book ID
- 107787994
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 396 KB
- Volume
- 129
- Category
- Article
- ISSN
- 0021-9797
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The surface of colloidal silica of 22 nm and 100 nm in diameter has been modified with a silane coupling agent, n-octadecyltriethoxysilane. The solid state 13C NMR spectrum shows surprisingly that the covalently bonded n-octadecyl chains on the silica surface adopt largely extended all-rrans confor
## Abstract The possibilities of inverse gasβsolid chromatography (IGC) in obtaining chromatographic data on fumed silica were examined. Aerosil Aβ200, a fused silica model substrate in ^29^Si nuclear magnetic resonance analysis, was trimethylsilylated to different degrees. IGC was used to very rep