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Information × Registration Number 0209U005190, 0106U001308 , R & D reports Title Physical-chemical basis of nanosize dispersions properties regulation popup.stage_title Head Soltys Mykhaylo, Registration Date 22-01-2009 Organization Ivan Franko Lviv National University popup.description2 Aggregative stability of titanium dioxide in aqueous solutions of potassium chloride of polymethacrylic acid and surfactants within wide range of pH medium has been studied: The aggregation degree of particles as well as structure of aggregates formed in aqueous phase was derermined. It was shown, that the effects of processes polumer–surfactant intermolecular interaction on aqueous dispersion stability have complicated charecter on both nature and ratio components. The mail role is played by molecular-solvation factor, connected with formation on uthe sirface particles protective adsorptive layer. The analyzes the results of the investigation of the re-despersion of metal carbonate powders in liquids of various chemical nature, in surfactant solutions and in water. It was shown that the aggregation and sedimentation stability of the suspensions on the degree of powder re-dispersion in which two consecutive processes are distinguished –spreading of a liquid on the particle surface throught spatial polydisperse pores, and the sincenty of a liquid into closed pores. Results of the use of models for description of spatial structure and viscosity of the dispersion systems are generalized. Possibility of quantitative estimation of basid parametrs of cellural amount of places (size of cell) and coupling force between pasrticles in a single contact. Product Description popup.authors popup.nrat_date 2020-04-02 Close