Sukmana, Irza the effect of sintering temperature on the properties of hydroxyapatite from local limestone for bone implant application ural rubber composite. Laporan Reviewer publikasi.

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Abstract

Abstract. The damage of bone tissue may cause malfunction of human load-bearing system. To date, hydroxyapatite (HA) is one of the most potential materials to repair bone damages and to restore the load-bearing function. It has been produced from both synthetic chemical and natural resources, including limestone. In this paper, the properties of hydroxyapatite made of CaCO3 from limestone was investigated in a function of sintering time, i.e., 2, 3 and 4 hours, and temperature, i.e., 600, 800 and 1000qC. The preparation of HA included crushing, meshing, grinding and sintering. HA powder was then characterized using X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive Spectroscopy (EDS). The hardness of compacted hydroxyapatite powder was also characterized using microVickers testing machine. SEM micrograph shows the agglomeration of particle increase in line with sintering temperature. The highest hardness was obtained for hydroxiapatite sample sintered at the highest temperature and for thelongest time, while EDS result indicates the highest ratio of calcium and phosphor was 2.33. The percentage of calcium in the observed local HA decreased as the sintering time increased. A comparison of XRD result between the commercially imported and the local HA powder produced in this study shows a similarity pattern, which indicates the potential replacement of the imported HA by our local limestone resources.

Item Type:	Other
Subjects:	T Technology > TS Manufactures
Divisions:	Fakultas Teknik (FT) > Prodi Teknik Mesin
Depositing User:	Dr. IRZA SUKMANA
Date Deposited:	02 Jan 2020 02:13
Last Modified:	02 Jan 2020 02:13
URI:	http://repository.lppm.unila.ac.id/id/eprint/17220

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