Influence of the Mechanochemical Modification of Humic Acids on the Formation of Colloids in Solution

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Abstract

The colloid-chemical properties of humic acids (HAs) were studied depending on the mechanochemical
modification of their structure. An increase in the amount of acidic ionogenic groups and hydrophilic
fragments in the composition of modified HAs facilitated a decrease in the excess energy of surface
molecules. In an alkaline solution, two types of colloids characterized by a decrease in the energy of adsorption and the constant of adsorption equilibrium were formed as the concentration of HAs was increased.

About the authors

N. V. Yudina

Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences

Email: natal@ipc.tsc.ru
Tomsk, 634055 Russia

A. V. Savel’eva

Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: anna@ipc.tsc.ru
Tomsk, 634055 Russia

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