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Information × Registration Number 0201U003662, 0100U003281 , R & D reports Title Physics, technology and diagnostics of hydroxyapatite-based nanodisperse biomaterials popup.stage_title Head Zyman Z.Z., Registration Date 03-04-2001 Organization Kharkov National University named after V.N. Karazin popup.description2 The peculiarities of the aqueous solution methods of the preparation of hidroxyapatite connected with the necessity of "maturing" of precipitate during with the ratio Ca/P is increasing to stoichiometric value 1,67 don't allow to prepare the powder with particles' size less then 1 mkm because of the processes of conglutination and connecting which flow in the system of matrix solution-precipitate and result in aggrigation of the precipitate. Dispergiration of precipitate taken at the final stage of synthesis in presence of surface-active substances was shown to result in peptisation of formed aggregates to particles of colloidal degree of dispersity and annealing of treated precipitate at the temperature 750 grad. C — to the preparation of nanodispersional powder with mean size of particles 0,2 mkm. Product Description popup.authors popup.nrat_date 2020-04-02 Close