Synthesis and structure of hydroxyapatite/tannin composites

Perawati, Santi and Rahayu, Aster and Anggresani, Lia and Yulianis, Yulianis and Sintia, Ulma and Setiawan, Randi (2024) Synthesis and structure of hydroxyapatite/tannin composites. Polimery, 69 (9). pp. 484-491.

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Abstract

Abstract: Hydroxyapatite (HA)-tannin composites were obtained by precipitation using Ca(OH)2 as calcium precursor and (NH4)2HPO4 or H3PO4 as phosphate precursors, with tannin acting as achelat-ing agent. FT-IR confirmed the presence of functional groups derived from tannin in the composite, and XRD showed trace amounts of calcium carbonate. The crystal sizes of HA and HA/tannin were 15–27 nm and 10–29 nm, respectively. SEM showed agglomeration of HA and HA/tannin particles. The size distribution of HA particles was in the range of 0.1–0.2 μm (without tannin), and the size distribu-tion of HA/tannin particles in the range of 0.1–0.4 μm. The obtained results confirmed the formation of strong bonds between tannin and HA.Keywords: chelating agent, diammonium hydrogen phosphate, phosphoric acid, tannin.

Type:	Article
Subjects:	R Medicine > RS Pharmacy and materia medica
Divisions:	Fakultas Kedokteran dan Ilmu Kesehatan > Farmasi
Depositing User:	Santi Perawati
Date Deposited:	02 Jan 2025 02:08
Last Modified:	02 Jan 2025 02:08
URI:	https://repository.unja.ac.id/id/eprint/73242

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