• Alonso, Lizette Morejón
• Ribeiro, Alexandre Antunes
• Lunz, Juliana Do Nascimento
• Delgado, José Angel
• Oliveira, Marize Varella De
• Licona, Karla Patricia Macedo

Abstract

<jats:p>Nanosized hydroxyapatite (HA) with crystallinity and composition similar to bone apatite has been widely investigated in the last years, due to their excellent biocompatibility in bone replacement applications. This bioceramic can be synthesized by many wet chemical and mechanochemical methods. In this paper, nanosized hydroxyapatite powders were synthesized by two wet chemical routes using mechanical stirring method. The first route was used for HA synthesis from CaCl<jats:sub>2</jats:sub>.2H<jats:sub>2</jats:sub>O and Na<jats:sub>3</jats:sub>PO<jats:sub>4</jats:sub>.12H<jats:sub>2</jats:sub>O solutions and the second route was from Ca (OH)<jats:sub>2</jats:sub> and H<jats:sub>3</jats:sub>PO<jats:sub>4</jats:sub> solutions. The synthesized HA nanoparticles were characterized by Dynamic Light Scattering, BET Surface Area analysis, X-ray Diffraction, Infrared Spectroscopy, chemical analysis and Scanning Electron Microscopy. The results indicated that HA nanoparticles were successfully synthesized by both wet chemical precipitation routes and all powders presented a Ca/P ratio similar to stoichiometric HA, nanoneedles morphology and single HA crystalline phase.</jats:p>

Topics

• nanoparticle
• surface
• scanning electron microscopy
• x-ray diffraction
• crystalline phase
• precipitation
• crystallinity
• biocompatibility
• dynamic light scattering
• infrared spectroscopy