Nanocrystalline hydroxyapatite ceramics prepared by hydrolysis in polyol medium

• Published in: Chemical physics letters 2012-07, Vol.541, p.75-80
• Main Authors: Mechay, Abderrahmen, Feki, Hafed E.L., Schoenstein, Fréderic, Jouini, Noureddine
• Format: Article
• Language: English
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2012.05.047

TEM image of calcinated HA at 950°C. [Display omitted] ► We leaned on a rigorous methodology of hydroxyapatites nanoparticles synthesis. ► We tried the method of synthesis by wet way in environment forced polyol. ► The results show good that our materials are pure and do not present foreign phases. ► These results confirm the nanometric size of these particles. This Letter describes a new approach for the synthesis of hydroxyapatite nanoparticles, which involves precipitation and hydrolysis reactions conducted in polyol medium. In fact, ammonium-hydrogen phosphate and calcium nitrate were dissolved in polyol, and then heated at the boiling point of the polyol (ethane1, 2diol or propane1, 2diol). Besides, the phase and composition of the polycrystalline were studied by TGA/DTA, FT-IR, TEM and XRD techniques. The nanoparticles thus obtained present interesting morphological characters varying from needle to very thin platelet. Moreover, the hydroxyapatite prepared in ployol shows higher cristallinity in comparison with that obtained by other ‘chimie douce’ methods.