Artículo
Bioactivity of wollastonite/aerogels composites obtained from a TEOS-MTES matrix
Autor/es | Toledo Fernández, J. A.
Mendoza Serna, R. Morales Flórez, Víctor ![]() ![]() ![]() ![]() ![]() ![]() ![]() Rosa Fox, Nicolás de la Piñero, Manuel Santos Sánchez, Alberto Esquivias Fedriani, Luis María ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2008 |
Fecha de depósito | 2020-04-21 |
Publicado en |
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Resumen | Organic-inorganic hybrid materials were synthesized by controlled hydrolysis of tetraethoxysilane (TEOS), methyltrimethoxysilane (MTES), synthetic wollastonite powders and polydimethylsiloxane (PDMS) in an ethanol solution. ... Organic-inorganic hybrid materials were synthesized by controlled hydrolysis of tetraethoxysilane (TEOS), methyltrimethoxysilane (MTES), synthetic wollastonite powders and polydimethylsiloxane (PDMS) in an ethanol solution. Aerogels were prepared from acid hydrolysis of TEOS and MTES with different volume ratio in ethanol, followed by addition of wollastonite powder and PDMS in order to obtain aerogels with 20 wt% of PDMS and 5 wt% of CaO of the total silica. Finally, when the wet gels were obtained, they were supercritically dried at 260°C and 90 bar, in ethanol. In order to obtain its bioactivity, one method for surface activation is based on a wet chemical alkaline treatment. The particular interest of this study is that we introduce hybrid aerogels, in a 1 M solution of NaOH, for 30 s at room temperature. We evaluate the bioactivity of TEOS-MTES aerogel when immersed in a static volume of simulated body fluid (SBF). An apatite layer of spherical-shaped particles of uniform size smaller than 5 microns is observed to form on the surface of the aerogels after 25 days soaking in SBF. |
Identificador del proyecto | MAT2005-01583
![]() TEP 790 ![]() |
Cita | Toledo Fernández, J.A., Mendoza Serna, R., Morales Flórez, V., Rosa Fox, N.d.l., Piñero, M., Santos Sánchez, A. y Esquivias Fedriani, L.M. (2008). Bioactivity of wollastonite/aerogels composites obtained from a TEOS-MTES matrix. Journal of Materials Science: Materials in Medicine, 19 (5), 2207-2213. |
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