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Precipitation of hybrid biocomposites based on calcium phosphates and citrated plasmaстатья
- Авторы: Глазов И.Е., Крутько В.К., Мусская О.Н., Кулак А.И., Власов Р.А., Santosh M.S.
- Сборник: Перспективные технологии и материалы. Материалы международной научно-практической конференции, г.Севастополь, 6-8 октября 2021
- Год издания: 2021
- Издательство: Севастопольский государственный университет
- Местоположение издательства: Севастополь
- Первая страница: 118
- Последняя страница: 122
- Аннотация: Hybrid biocomposites based on calcium phosphates were precipitated at pH of 6 to 11 in presence of 6 to 24 vol.% of citrated plasma (CitP). The influence of CitP were biopolymer-determined and favored the formation of calcium-deficient hydroxyapatites and metastable calcium phosphate phases depending on the precipitation pH value. In weak acid medium, dicalcium phosphate dehydrate was the predominant phase but the buffering properties of CitP contributed to formation of octacalcium phosphateand apatitic tricalcium phosphate. In alkaline medium, precipitated were predominantly hydroxyapatite, which were calcium-deficient at 6 vol.% of CitP and contained 5 to 41 wt.% of amorphous calcium phosphate phase. The overall effect of CitP were found to depend on its content in precipitation medium. At 6 vol.% of CitP, composition of formed calcium phosphates were determined by polyelectrolyte nature of CitP that is responsible for buffering properties at pH 6 and negative surface charge at pH 11. Increasing CitP content to 24 vol.% led to significant stabilization of octacalcium phosphate at pH 6 and amorphous calcium phosphate at pH 11, which are metastable calcium phosphate phases.
- Добавил в систему: Глазов Илья Евгеньевич