Microemulsións: un avance na obtención de fluídos magnéticos
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Real Academia Galega de Ciencias
Abstract
Neste traballo preséntase unha vía alternativa e totalmente orixinal
de síntese de nanopartículas para a preparación de fluidos magnéticos,
con mellaras respecto ós métodos tradicionais. Para elo, empréganse
mezclas ternarias dun disolvente orgánico, un tensioactivo e unha
disolución acuosa en forma de microemulsión, para sintetizar
nanopartículas magnéticas de óxidos de ferro. Estas nanopartículas,
lavadas e cubertas con ácido oleico, son estabilizadas nun líquido
portador, producindo un fluido magnético. Preséntanse medidas de
difracción de raios-X, microscopía electrónica de transmisión e medidas
de magnetización, tanto das partículas coma do líquido preparado
In this work, an alternative and completely original route for the synthesis of magnetic fluids is presented. This method presents improvements with respect to the traditional methods. Por this purpose, ternary mixtures of organic solvent, surfactant and aqueous solution forming a microemulsion are used for the synthesis of magnetic iron oxide particles. These particles, washed and covered with oleic acid, are stabilized in a carrier liquid, producing a magnetic fluid. X-ray diffraction, transmission electron microscopy and magnetic measurements of the particles and the prepared liquid are reported
In this work, an alternative and completely original route for the synthesis of magnetic fluids is presented. This method presents improvements with respect to the traditional methods. Por this purpose, ternary mixtures of organic solvent, surfactant and aqueous solution forming a microemulsion are used for the synthesis of magnetic iron oxide particles. These particles, washed and covered with oleic acid, are stabilized in a carrier liquid, producing a magnetic fluid. X-ray diffraction, transmission electron microscopy and magnetic measurements of the particles and the prepared liquid are reported
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Bibliographic citation
López Pérez, J.A., López Quintela, M.A., Mira Pérez, J. e Rivas Rey, J. (1996). Microemulsións: un avance na obtención de fluídos magnéticos, Revista Real Academia Galega de Ciencias. Vol. XV, pp. 161-176
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© Real Academia Galega das Ciencias, 1996








