EXTRACTION OF PURE HYDROXYAPATITE FROM PORCINE BONE BY THERMAL PROCESS

Natural hydroxyapatite (HA) has been extracted from porcine bone by thermal decomposition without any chemical treatment. The suitable condition to synthesize HA was chosen as a heating bone at 750 degrees C during 6 hours. XRD and FTIR analyses confirmed the high purity and crystallinity of synthetic HA. Furthermore, the transformation of the obtained HA to other phases did not mention up to 1200 degrees C. TG curve showed a slight loss of mass at 950 degrees C, but the DSC analysis did not present any physic-chemical phenomena during the period of measurement. FE-SEM images showed the different particles including spheres, scales, and rods in the structure of natural HA. EDX analysis indicated that the Ca/P ratio of the synthetic HA is 1.64, nearly the theoretical value of 1.67. Overall, the results obtained in this study confirmed the success of the thermal process to extract the natural HA from porcine bone.