Published : 2024-09-30

Synthesis and structure of hydroxyapatite/tannin composites

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 a chelating 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 distribution 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.



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02_Rahayu_09_2024

Anggresani, L., Rahayu, A., Perawati, S., Yulianis , Y., Sintia, U., & Setiawan, R. (2024). Synthesis and structure of hydroxyapatite/tannin composites. Polimery, 69(9), 484–491. https://doi.org/10.14314/polimery.2024.9.2