Synthesis of hydroxyapatite by hydrothermal and microwave irradiation methods from biogenic calcium source varying pH and synthesis time

Hydroxyapatite is the main bones and teeth inorganic mineral component. This material has been an object of research aiming its use in biomaterials as bone replacement option for biomedical applications. In this investigation, the synthesis of hydroxyapatite was studied by the Hydrothermal (HT) and...

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Published inBoletín de la Sociedad Española de Cerámica y Vidrio (1983) Vol. 61; no. 1; pp. 35 - 41
Main Authors Castro, Mário Andrean Macedo, Portela, Thayane Oliveira, Correa, Gricirene S., Oliveira, Marcelo Moizinho, Rangel, José Hilton Gomes, Rodrigues, Samuel Filgueiras, Mercury, José Manuel Rivas
Format Journal Article
LanguageEnglish
Published Elsevier España, S.L.U 01.01.2022
Elsevier
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Summary:Hydroxyapatite is the main bones and teeth inorganic mineral component. This material has been an object of research aiming its use in biomaterials as bone replacement option for biomedical applications. In this investigation, the synthesis of hydroxyapatite was studied by the Hydrothermal (HT) and Microwave Irradiation (MW) methods. Here, parameters such as pH (9 and 11) and synthesis time were varied, and residue of chicken eggshell was used as calcium precursor. The obtained powders were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Dispersive Energy X-ray Spectroscopy (EDS), and Transmission Electron Microscopy (TEM). The results showed that the material synthesized when the pH reached the value of 9 which generated less carbonated powders than those with pH of 11. The Hydrothermal method presented more satisfactory morphological results according to the TEM analysis. This procedure was considered more suitable as a route to obtain hydroxyapatite as biomaterial. La hidroxiapatita es el principal componente mineral inorgánico de huesos y dientes. Este material ha sido objeto de investigación dirigida a su uso en biomateriales como sustituto óseo en aplicaciones biomédicas. En este trabajo, se estudió la síntesis de hidroxiapatita utilizando los métodos hidrotermal (HT) y de irradiación de microondas (MW), variando parámetros como el pH (9 y 11) y el tiempo de síntesis, utilizando como precursor de calcio, el residuo de la cáscara de huevo de gallina. Los sólidos (polvo) obtenidos se caracterizaron por difracción de rayos X (DRX), espectroscopía infrarroja por transformada de Fourier (FTIR), espectroscopía de energía dispersiva (EDS) y microscopía electrónica de transmisión (MET). Los resultados mostraron que el material sintetizado a pH 9 generó polvos menos carbonatados que aquellos obtenidos a pH 11. El método hidrotérmico presentó resultados morfológicos más satisfactorios según el análisis de MET. Este procedimiento se consideró más adecuado como una ruta para obtener hidroxiapatita como biomaterial.
ISSN:0366-3175
DOI:10.1016/j.bsecv.2020.06.003