Sukmana, Irza (2021) Mechanochemical Synthesis of Hydroxyapatite (HAp) from Local Lampung, Indonesia Limestone. In: The 7th International Conference on Science, Technology and Interdisciplinary Research 2021, 26 - 27 Oktober 2021, Bandar Lampung. (Submitted)

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Hydroxyapatite is a crystalline molecule composed of phosphorus and calcium with Ca10(PO4)6(OH)2. Hydroxyapatite (HAp) is one of the materials for bone implants or as a filler for porous tissue. HAp can be made from limestone synthesis by mechanochemical methods. This study describes the results of the analysis of limestone synthesis using the mechanical-chemical method. Local limestone from Mt. Kunyit, Lampung Province – Indonesia, is used as the primary material. The addition of sodium hydrogen phosphate (Na2HPO4) as a source of phosphorus (P) with a milling speed variation of 300 rpm for 2, 3, and 4 hrs. The synthesized HAp was characterized by comparing commercial HAp using x-ray diffraction, fourier transform infra-red (FTIR), and micro vickers hardness test. The XRD characterization of commercial products with a synthetic yield of 600oC has peaked with different intensities and patterns. Based on the FTIR characterization graph, carbonate ions were still found in the HAp synthesis with relatively low intensity. This carbonate ion will activate the formation of hydroxyapatite crystals. The degree of crystallinity and purity of hydroxyapatite causes hydroxyapatite to be amorphous. For the results of mechanical testing, HAp made from Mt. Kunyit limestone has the highest average hardness value of 9.73 HV at 2 hrs of the milling process

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Fakultas Teknik (FT) > Prodi Teknik Mesin
Depositing User: Dr. IRZA SUKMANA
Date Deposited: 14 Nov 2021 05:02
Last Modified: 14 Nov 2021 05:02

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