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Information × Registration Number 0210U006919, 0107U011980 , R & D reports Title Investigation of the properties of silica-magnetite composites in the processes of magnetocontrolled separation and selective sorption of different types of nucleic acids. popup.stage_title Head Dudchenko N.O., Registration Date 23-12-2010 Organization Institute of the Applied Problems of Physics and Biophysics of the National Academy of Scienes popup.description2 In project course techniques and experimentally definitely physical and chemical parameters of synthesis of nanocomposites of magnetite with a covering of silica, hytozan, a dextran, and hydroxietylchromal are developed; it is synthesized a set of silika-magnetite nanocomposites with different physical and chemical properties; it is investigated physical and chemical properties of synthesized nanoparticles and the new data concerning structure of synthesized nanocomposites namely structural features of a surface of nanoparticles by means is obtained. Structural features of a surface are very important characteristic of nanoparticles the biological substances appointed for selective magnetic separation as for separation of certain substances necessary presence of certain functional groups on a surface of magnetic nanoparticles, density of their arrangement is also important. It is shown that the form of loops of a hysteresis for the synthesized samples of nanocomposites is extremely thin, they don't show residual magnetization or coercivity . That is, the synthesized samples of nanocomposites are superparamagnetic. Product Description popup.authors Алексейцев Ю. О. Волкова Н.М. Дудченко А. К. popup.nrat_date 2020-04-02 Close