Volume :5 , Issue :3 ,Page :76-86

Abstract :The preparation of Nano hydroxyapatite (HAp ) with varied morphology has usually been achieved by changing the parameters like concen tration, temperature, pH and the precursors in coprecipitation method. However the morphological control by changi ng the mode of addition of the precursor solutions has seldom been reported. In the present work polygonal morphology has successfully been achieved by a simple method of dripping the calcium ionic solution thro ugh a tubular tip into the whirl-pool of tetradecyltrimethylammonium brom ide (Cetrimide) added phosphate ionicsolution, which is stirring moderately. The sa me experiment with ultrasonic vibr ation instead of stirring has also been done. The Fourier Transform–Infrared Spectros copy (FTIR), X-ray diffraction (XRD), Scanning Electron Microscope (SEM), Ener gy dispersive X-ray spectroscopy (EDX) and Transmission Electron Microscope (TEM) studies were made and the results were discussed. The results show that polygonal morphology could be achieved by changing the mode of addition. The change in mode of agitation gives comparatively smaller particles with smaller grain size, more strain and carbonate inclusion.