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Synthesis and Physicochemical Study of Chitosan-Containing Calcium Hydroxylapatites

  • Synthesis and Properties of Inorganic Compounds
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Abstract

The CaCl2-(NH4)2HPO4-(C6H11NO4)n-NH3-H2O system at 25°C was studied by the solubility (Tananaev’s residual concentrations) technique and pH measurements. The parameters providing for the coprecipitation of nanocrystalline (12.5–18.7 nm) calcium and chitosan hydroxylapatites were found. Calcium-deficient chitosan hydroxylapatites Ca9.8(PO4)6(OH)1.6 · xC6H11NO4 · yH2O, where x = 0.075 or 0.37 and y = 5.8 or 6.2, and stoichiometric calcium hydroxylapatites Ca10(PO4)6(OH)2 · xC6H11NO4 · yH2O, where x = 0.075, 0.1, 0.2, 0.37, 0.5, or 0.75 and y = 5.7–7.5, were synthesized. Solid phases were characterized by chemical analysis, X-ray powder diffraction, thermogravimetric analysis, and IR spectroscopy.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    V. T. Kalinnikov, Zh. A. Ezhova, N. A. Zakharov & E. M. Koval’

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  1. V. T. Kalinnikov
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  2. Zh. A. Ezhova
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  3. N. A. Zakharov
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  4. E. M. Koval’
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Kalinnikov, V.T., Ezhova, Z.A., Zakharov, N.A. et al. Synthesis and Physicochemical Study of Chitosan-Containing Calcium Hydroxylapatites. Russ. J. Inorg. Chem. 53, 357–361 (2008). https://doi.org/10.1134/S0036023608030030

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  • DOI: https://doi.org/10.1134/S0036023608030030

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