Thermal stability of brushite with chitosan samples

Abstract

In this paper, the powders of brushite from an aqueous solution of Ca(NO₃)₂- (NH₄)₂HPO₄ with different content of chitosan were synthesized. XRD data revealed that all samples are single-phase and are brushite (CaHPO₄•2H₂O). By FT-IR spectroscopy and BET methods, it was found that chitosan adsorbs onto the surface of powders. With increase of the content of the additive, the average size of crystallites increases 4.0 - 4.8 - 11.8 μm, respectively, and the dissolution rate in isotonic solution also decreases. The thermal stability of the composite powders was studied. It was established that the highest destruction of samples occurs in the range 473-673 K by removing of adsorption and crystallization water and partial change of the structure of the mineral and chitosan. At a temperature of 873 K, carbonization of the organic additive occurs.

Original language	English
Article number	012066
Journal	IOP Conference Series: Materials Science and Engineering
Volume	168
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/168/1/012066
Publication status	Published - 7 Feb 2017
Event	12th International Conference Radiation-Thermal Effects and Processes in Inorganic Materials - Tomsk, Russian Federation Duration: 4 Sep 2016 → 12 Sep 2016

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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10.1088/1757-899X/168/1/012066

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title = "Thermal stability of brushite with chitosan samples",

abstract = "In this paper, the powders of brushite from an aqueous solution of Ca(NO3)2- (NH4)2HPO4 with different content of chitosan were synthesized. XRD data revealed that all samples are single-phase and are brushite (CaHPO4•2H2O). By FT-IR spectroscopy and BET methods, it was found that chitosan adsorbs onto the surface of powders. With increase of the content of the additive, the average size of crystallites increases 4.0 - 4.8 - 11.8 μm, respectively, and the dissolution rate in isotonic solution also decreases. The thermal stability of the composite powders was studied. It was established that the highest destruction of samples occurs in the range 473-673 K by removing of adsorption and crystallization water and partial change of the structure of the mineral and chitosan. At a temperature of 873 K, carbonization of the organic additive occurs.",

author = "Chikanova, {E. S.} and Golovanova, {O. A.} and Malikova, {T. V.} and Kuimova, {M. V.}",

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note = "12th International Conference Radiation-Thermal Effects and Processes in Inorganic Materials ; Conference date: 04-09-2016 Through 12-09-2016",

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T1 - Thermal stability of brushite with chitosan samples

AU - Chikanova, E. S.

AU - Golovanova, O. A.

AU - Malikova, T. V.

AU - Kuimova, M. V.

PY - 2017/2/7

Y1 - 2017/2/7

N2 - In this paper, the powders of brushite from an aqueous solution of Ca(NO3)2- (NH4)2HPO4 with different content of chitosan were synthesized. XRD data revealed that all samples are single-phase and are brushite (CaHPO4•2H2O). By FT-IR spectroscopy and BET methods, it was found that chitosan adsorbs onto the surface of powders. With increase of the content of the additive, the average size of crystallites increases 4.0 - 4.8 - 11.8 μm, respectively, and the dissolution rate in isotonic solution also decreases. The thermal stability of the composite powders was studied. It was established that the highest destruction of samples occurs in the range 473-673 K by removing of adsorption and crystallization water and partial change of the structure of the mineral and chitosan. At a temperature of 873 K, carbonization of the organic additive occurs.

AB - In this paper, the powders of brushite from an aqueous solution of Ca(NO3)2- (NH4)2HPO4 with different content of chitosan were synthesized. XRD data revealed that all samples are single-phase and are brushite (CaHPO4•2H2O). By FT-IR spectroscopy and BET methods, it was found that chitosan adsorbs onto the surface of powders. With increase of the content of the additive, the average size of crystallites increases 4.0 - 4.8 - 11.8 μm, respectively, and the dissolution rate in isotonic solution also decreases. The thermal stability of the composite powders was studied. It was established that the highest destruction of samples occurs in the range 473-673 K by removing of adsorption and crystallization water and partial change of the structure of the mineral and chitosan. At a temperature of 873 K, carbonization of the organic additive occurs.

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