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Title: Thermal effects of carbonated hydroxyapatite modified by glycine and albumin
Authors: Gerk, S. A.
Golovanova, O. A.
Kuimova, Marina Valerievna
Keywords: термический эффект; гидроксиапатиты; глицин; фосфат кальция; осаждение; рентгеновские лучи; ИК-спектроскопия; порошки; аминокислоты; модельные растворы; твердые фазы
Issue Date: 2017
Publisher: IOP Publishing
Citation: Gerk S. A. Thermal effects of carbonated hydroxyapatite modified by glycine and albumin / S. A. Gerk, O. A. Golovanova, M. V. Kuimova // IOP Conference Series: Materials Science and Engineering. — 2017. — Vol. 168 : Radiation-Thermal Effects and Processes in Inorganic Materials (RTEP2016) : XII International Conference, 4–12 September 2016, Tomsk, Russian Federation : [proceedings]. — [012061, 6 p.].
Abstract: In this work calcium phosphate powders were obtained by precipitation method from simulated solutions of synovial fluid containing glycine and albumin. X-ray diffraction and IR spectroscopy determined that all samples are single-phase and are presented by carbonate containing hydroxyapatite (CHA). The thermograms of solid phases of CHA were obtained and analyzed; five stages of transformation in the temperature range of 25-1000°C were marked. It is shown that in this temperature range dehydration, decarboxylation and thermal degradation of amino acid and protein connected to the surface of solid phase occur. The tendency of temperature lowering of the decomposition of powders synthesized from a medium containing organic substances was determined. Results demonstrate a direct dependence between the concentration of the amino acid in a model solution and its content in the solid phase.
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