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Название: Study of thermal effects of silicate-containing hydroxyapatites
Авторы: Golovanova, O. A.
Zaits, A. V.
Berdinskaya, N. V.
Mylnikova, Tatyana Stepanovna
Ключевые слова: тепловые эффекты; гидроксиапатит; кристаллизация; апатиты
Дата публикации: 2016
Издатель: IOP Publishing
Библиографическое описание: Study of thermal effects of silicate-containing hydroxyapatites / O. A. Golovanova [et al.] // IOP Conference Series: Materials Science and Engineering. — 2016. — Vol. 110 : Radiation-Thermal Effects and Processes in Inorganic Materials (RTEP2015) : International Scientific Conference, 31 August to 10 September 2015, Tomsk, Russia : [proceedings]. — [012024, 6 p.].
Аннотация: The possibility of modifications of hydroxyapatite silicate ions, from the extracellular fluid prototype solution under near-physiological conditions has been studied. Formation of silicon-structured hydroxyapatite with different extent of substitution of phosphate groups in the silicate group has been established through chemical and X-ray diffraction analyses, FTIR spectroscopy and optical microscopy. The results obtained are in agreement and suggest the possibility of substitution of phosphate groups for silicate groups in the hydroxyapatite structure when introducing different sources of silica, tetraethoxysilane and sodium silicate, in the reaction mixture. Growth in the amount of silicon in Si-HA results in the increase in the thermal stability of the samples. The greatest mass loss occurs at temperatures in the range of 25-400 °С that is caused by the removal of the crystallization and adsorption water and volatile impurities. It is shown that the modified apatites are of imperfect structure and crystallize in a nanocrystalline state.
URI: http://earchive.tpu.ru/handle/11683/18119
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