Abstract
Nano hydroxyapatite (HA) was synthesized by a wet chemical reaction route using powdered sea shells (CaO) as starting material which was converted to calcium hydroxide (Ca(OH)2) and subsequently reacted with phosphoric acid (H3PO4) by slow addition, maintaining a Ca:P ratio of 1.67. The synthesized samples showed X-ray diffraction (XRD) patterns corresponding to phase pure hydoxyapatite. The prepared HA powder was subjected to furnace and microwave heating to compare the decomposition of HA and study the crystallite sizes. The morphology of the as synthesized nano HA was rod shaped and the crystallite size was about 101nm. Microwave heated HA showed no decomposition and yielded crystallite sizes of lesser dimensions than furnace heated HA at various heating temperatures.
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