5 years ago

Synthesis and properties of calcium hydroxyapatite/carbon fiber composites

N. T. Kuznetsov, E. V. Shelekhov, M. A. Orlov, T. V. Zakharova, V. V. Matveev, A. M. Safonova, L. I. Demina, N. A. Zakharov, A. D. Aliev, M. R. Kiselev

Abstract

Composites comprising micrometer-sized carbon fibers (CFs) and biocompatible nanocrystalline calcium hydroxyapatite Ca10(PO4)6(OH)2 (HA, NCHA), containing 1.0, 2.0, and 5.0 wt % CFs, have been synthesized in the course of precipitation from aqueous solutions in the Ca(OH)2–H3PO4–CF–H2O system. Some physicochemical characteristics of the precursor CFs and synthesis products have been determined using chemical, X-ray diffraction, and thermal analyses, IR spectroscopy, and scanning and transmission electron microscopy. An analysis of composition–synthesis conditions–structure–particle size–property correlations indicates that the presence of CFs in HA/CF composites strongly decreases the sizes and modifies the habit of NCHA. A rise of CF content in the HA/CF composite is accompanied by a decrease in particle size and a rise in solubility of NCHA.

Publisher URL: https://link.springer.com/article/10.1134/S0036023617090200

DOI: 10.1134/S0036023617090200

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