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Vol. 26 No. 17 (2014): Vol 26 Issue 17

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Molecular Mechanism of Nano-Hydroxyapatite Surface Changes from Hydrophilic to Hydrophobic

https://doi.org/10.14233/ajchem.2014.18110
Xu Ran
School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, P.R. China
Xueying Yu
School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, P.R. China
Jin He
School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, P.R. China
Zhe Xiao
School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, P.R. China

Corresponding Author(s) : Xu Ran

ranxu@mail.ccut.edu.cn

Asian Journal of Chemistry, Vol. 26 No. 17 (2014): Vol 26 Issue 17

Abstract

The hydroxyapatite was modified via a stearic acid with different content. The microstructure, surface structure and surface element binding energy of the modified hydroxyapatite were investigated. Furthermore, the activation ratio of the modified hydroxyapatite was also tested. The FTIR and XPS detection revealed that the stearic acid molecules had been grafted onto the hydroxyapatite’s surface through ionic bonds, which had been formed through a reaction between the carboxyl groups of the stearic acid molecules and the calcium ions on the hydroxyapatite’s surface. The result of the activation ratio test demonstrated that in the presence of a critical value of stearic acid, the hydroxyapatite’s surface was then modified to a nearly complete hydrophobic state.

Keywords

Hydroxyapatite Hydrophilicity change Molecular mechanism
Ran, X., Yu, X., He, J., & Xiao, Z. (2014). Molecular Mechanism of Nano-Hydroxyapatite Surface Changes from Hydrophilic to Hydrophobic. Asian Journal of Chemistry, 26(17), 5355–5359. https://doi.org/10.14233/ajchem.2014.18110
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