000			02073nam a22001817a 4500
003			OSt
005			20240910111731.0
008			240910b |||||||| |||| 00| 0 eng d
040			_aMMSU _cULS
100			_aCabulisan, Asteryssaphire M.
245			_aSynthesis and characterization of hydroxyapatite from cow bone / _cAsteryssaphire M. Cabulisan
260			_aCity of Batac : _bMMSU, _c2024.
300			_axv, 45 leaves : _c29 cm.
500			_aUTHESIS (Bachelor of Science in Ceramic Engineering)
504			_aBibliography : leaves 29-30
520			_aThere is a growing demand for hydroxyapatite (HAp) especially in medical applications. However, green production of HAp is a challenge. In this research a natural (HAp) was extracted from raw cow bone by heat treatment using calcination method at in the range of 500℃ to 900℃. Pretreatment of the raw cow bone was effectively achieved by boiling through pressure cooker for a total of 5 h, and acetone cleaning through ultrasonic cleaner. After calcination at different temperature, the obtained HAp was characterized by x-ray fluorescence, x-ray diffraction (XRD), and scanning electron microscope (SEM). Removal of organic portion from heat treatments was confirmed by XRF analysis and revealed the main component of hydroxyapatite the Ca and P. XRD results showed that crystallinity of HAp phase after calcination above 600 ℃ and the crystal size has been found to increase with increasing temperature of calcinations. In addition, SEM results confirmed the rod structure characteristic of natural HAp, prominently observed at 800℃ and 900℃. The natural HAp obtained by calcining at 900 °C revealed highly desirable properties in term of morphology, composition of element and crystallinity. However, Ca and P content which corresponded to the Ca/P molar ratio is nonstoichiometric hydroxyapatite but still acceptable for biomedical application. Moreover, production of HAp is still possible even without the incorporation of ultrasonication.
942			_2lcc _cTHEDIS
999			_c23515 _d23515