Recubrimiento biomimético de andamios de alúmina en diferentes tiempos de inmersión
DOI:
https://doi.org/10.32480/rscp.2025.30.1.4455Palabras clave:
Andamio, Alúmina, Recubrimiento biomimético, Biocerámica, PorosidadResumen
El método biomimético se puede utilizar para recubrir andamios con fosfato cálcico para mejorar la bioactividad. Este método tiene las ventajas de bajo costo, reproducibilidad y aplicabilidad a superficies complejas y estructuras porosas. Este estudio tuvocomo objetivo fabricar andamios de alúmina recubiertos de fosfato de calcio utilizando un método biomimético para su uso comobiomaterial. Los andamios se compactaron a 200 MPa con 40% en peso de bicarbonato de amonio y 60% en peso de alúmina, se tratarontérmicamente a 270 °C durante 120 min y se sinterizaron a 1500 °C durante otros 120 min. Las muestras se recubrieron biomiméticamente, sumergiéndolas en una solución simplificada de cloruro de calcio dihidrato (CaCl2.2H2O) e hidrogeno fosfatode sodio dihidrato (Na2HPO4.2H2O) durante 7, 14 y 21 días. Las muestras se caracterizaron utilizando el principio de Arquímedes para la determinación de densidad y porosidad, microscopía electrónica de barrido (SEM), espectroscopia de energía dispersiva(EDS), difracción de rayos X (XRD) e infrarrojo con transformada de Fourier (FTIR). Los andamios presentaron una porosidad del 55%, con distribución, interconexión y tamaños de poro homogéneos. Se observó formación de fosfato de calcio en las superficies del andamio después de 21 días de recubrimiento biomimético. Las muestras presentaron resultados prometedores para su uso como andamios biocompatibles.
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