Thermal effects of carbonated hydroxyapatite modified by glycine and albumin

7th International Conference Radiation-thermal Effects and Processes in Inorganic Materials

材料科学;物理学

Gerk, S.A.^1 ; Golovanova, O.A.^1 ; Kuimova, M.V.^2

F.M. Dostoevsky State University, Omsk, Russia^1

National Research Tomsk Polytechnic University, Tomsk, Russia^2

关键词: Carbonated hydroxyapatites;    Model solution;    Organic substances;    Precipitation methods;    Simulated solution;    Single phase;    Synovial fluid;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/168/1/012061/pdf
DOI  :  10.1088/1757-899X/168/1/012061

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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.