Resumo

VARELA-CASELIS, Jenaro L.; REYES-CERVANTES, Eric  e  RUBIO-ROSAS, Efraín. Crecimiento en fluido fisiológico simulado de hidroxiapatita sobre películas de PMMA sílice-CaO. Superf. vacío [online]. 2011, vol.24, n.3, pp.92-95. ISSN 1665-3521.

By simulated body fluid was grown hydroxyapatite on stainless steel 316L coated with PMMA-silica hybrid coating doped with calcium methoxide synthesized by sol-gel process. The coated substrates were immersed in simulated body fluid (SBF) solutions for periods of 10, 15, 20, 25 and 30 days and the apatite deposited on the substrates was characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Diffraction (XRD). FTIR showed the presence of functional groups characteristic of hydroxyapatite. SEM analysis revealed that the material is formed for spherical structures with a size of the order of 3 to 20 μm composed of plate-like, curled fragments and the immersion time contributes to the formation of a much larger laminar structure. XRD analysis confirmed the presence of hydroxyapatite phase on the coating hybrid. The synthesized coating has the potential features to be used as a biomaterial.

Palavras-chave : Hydroxyapatite; Simulated body fluid; Bbiomimetic method; Hybrid coatings.

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