Surface modification of oxidic nanoparticles using 3-methacryloxypropyltrimethoxysilane
| Autor: | van der R Rob Linde, W Willem Posthumus, Aha Tinnemans, Jcm José Brokken-Zijp, Pcmm Pieter Magusin |
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| Přispěvatelé: | Materials and Interface Chemistry, Inorganic Materials & Catalysis |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
congenital
hereditary and neonatal diseases and abnormalities Materials science Hydrogen bond Kinetics Inorganic chemistry Oxide Nanoparticle nutritional and metabolic diseases Tin oxide Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Chemical engineering chemistry Monolayer Surface modification Fourier transform infrared spectroscopy skin and connective tissue diseases |
| Zdroj: | Journal of Colloid and Interface Science, 269(1), 109-116. Academic Press Inc. |
| ISSN: | 0021-9797 |
| Popis: | Tin oxide, antimony-doped tin oxide (ATO), and silica nanosized particles in aqueous dispersion were reacted with various amounts of 3-methacryloxypropyltrimethoxysilane (MPS). The kinetics were followed by 29 Si NMR and the products were analyzed by FTIR and 29 Si NMR. The kinetic experiments on ATO and silica revealed that the hydrolysis is the rate-determining step in these reactions. The reaction of MPS with the particles is favored over the homocondensation of MPS. Quantitative analysis using FTIR revealed that the amount of MPS grafted onto the tin oxide and silica particles is limited to the amount needed to fill one monolayer. For ATO the maximum amount of grafted MPS was only 50–70% of the amount that is needed for a closed monolayer. The MPS molecules are for the most part oriented parallel to the oxide surface, and a hydrogen bond between the MPS-carbonyl and the oxide is formed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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