Organic calcium silicate hydrate hybrids: a new approach to cement based nanocomposites
| Autor: | Henri Van Damme, Nicolas Lequeux, Alexandre Franceschini, Jérome Minet, Sébastien Abramson, Bruno Bresson |
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| Přispěvatelé: | Laboratoire de Physico-Chimie des Polymères et des Milieux Dispersés (PPMD), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Laboratoire Colloïdes et Matériaux Divisés (LCMD), Centre National de la Recherche Scientifique (CNRS)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Sciences et Ingénierie de la Matière Molle (UMR 7615) (SIMM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2006 |
| Předmět: |
[PHYS]Physics [physics]
Materials science Nanocomposite Precipitation (chemistry) Inorganic chemistry 0211 other engineering and technologies 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Alkali metal Silicate [SPI]Engineering Sciences [physics] chemistry.chemical_compound chemistry 021105 building & construction Calcium silicate Materials Chemistry Calcium silicate hydrate 0210 nano-technology Hydrate Sol-gel |
| Zdroj: | Journal of Materials Chemistry Journal of Materials Chemistry, Royal Society of Chemistry, 2006, 16, pp.1379-1383. ⟨10.1039/b515947d⟩ Journal of Materials Chemistry, 2006, 16, pp.1379-1383. ⟨10.1039/b515947d⟩ |
| ISSN: | 1364-5501 0959-9428 |
| DOI: | 10.1039/b515947d |
| Popis: | National audience; Novel hybrid organic–inorganic calcium silicate hydrate (C–S–H) materials have been synthesized via a sol–gel process. The materials are obtained by precipitation in alkali media of a mixture of trialkoxysilane (ethyltriethoxysilane, n-butyltrimethoxysilane or 3-aminopropyltriethoxysilane) and tetraethoxysilane diluted in CaCl2 ethanol–water solution. XRD experiments show an increase of the basal distance of C–S–H with the content of trialkoxysilane suggesting the incorporation of organic moieties in the interlayer. 29Si NMR data show that the organic species do not disrupt the inorganic framework of C–S–H. 2D 1H–29Si HETCOR NMR experiments confirm that trialkoxysilanes such as ethyl- or aminopropyl-silane are incorporated in the silicate chains of the C–S–H structure. In the case of highly hydrophobic trialkoxysilanes such as n-butyltrimethoxysilane, the results suggest that a separation occurs between silicates and trialkoxysilanes, leading to a mixture of inorganic C–S–H on one hand and 100% organosilane calcium hybrid phase on the other hand. |
| Databáze: | OpenAIRE |
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