Abstract
Infrared spectra are obtained for the disperse phase of initial and mechanoactivated hydrosols of colloidal silica and binary systems with an oligoacrylate dispersion (10 wt %). Changes in the absorption bands characterizing the state of the functional groups of the considered substances are analyzed. A conclusion is drawn about interactions that occur according to the mechanism of physical adsorption with silica subjected to ultrasonic dispersion. It is found that the rotor pulse treatment of a hydrosol of silica results in the breaking of siloxane bonds, accompanied by a rise in the concentration of the silanol groups. Mechanoactivation of the binary system ensures processes of chemisorption with the formation of new types of Si–O–C and Si–C bonds.
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This work was supported by the Russian Foundation for Basic Research, project no. 18-47-370005/18.
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Translated by E. Boltukhina
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Aleeva, S.V., Koksharov, S.A., Kornilova, N.L. et al. Interactions in Mechanoactivated Hydrosols of Colloidal Silica and Oligoacrylates. Russ. J. Phys. Chem. 94, 1268–1271 (2020). https://doi.org/10.1134/S0036024420060035
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DOI: https://doi.org/10.1134/S0036024420060035