Nano-size hydroxyapatite powders preparation by wet-chemical precipitation route
Abstract
In this study, wet-chemical process was performed to prepare nano-size hydroxyapatite (HA) powders (≈10 nm) by varying concentration (low, medium and high) of the starting solutions in order to increase the amount of as-dried HA powders with different process conditions. Particle sizes and density were analyzed and differential thermal analysiswas used to determine the glass transition (Tg) and the onsetcrystallization (Tc) temperatures. XRD and SEM were performedto identify phases and microstructure. The wet-chemical precipitation using low concentration ofstarting solution under reflux environment could be the optimize process to induce the formation of hydroxyapatite rather than tricalcium phosphate even though obtaining a smaller amount of as-dried powders comparedto using high concentration. In addition, the density at 4.05 g/cm3 and specific surface area at 89.58 m2/g as well as a uniform grain size morphology with a small size distribution can be achieved by using this route.Downloads
References
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