Preparation of needle‐like hydroxyapatite by homogeneous precipitation under hydrothermal conditions
- 1 January 1993
- journal article
- Published by Wiley in Journal of Chemical Technology & Biotechnology
- Vol. 57 (4) , 349-353
- https://doi.org/10.1002/jctb.280570409
Abstract
Preparation of hydroxyapatite was carried out by a homogeneous precipitation technique using hydrothermal reactions of Ca(EDTA)2‐ and PO43‐ at 130–250°C and pH 4–10. Hydroxyapatite and monetite were formed above pH 6 and below pH 4, respectively. Needle‐like hydroxyapatite was formed at high temperatures above 130°C. The length of the needle‐like hydroxyapatite crystal increased with increasing working solution pH and temperature.Keywords
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