Abstract
This article provides information about the possibility of studying modified sodium montmorillonite obtained on the basis of bentonite clays from the Darbazinsky deposit in order to use it as a modifier for the production of polymer composite materials. In the course of experimental studies, it was revealed that a feature of the structure of montmorillonite is that weakly bound water molecules are located between the layers and due to this the crystal lattice is mobile. The results of experimental studies of the modification of montmorillonite in the presence of sodium at a temperature of 353 K, characterized by high values of cation exchange, are presented and it is determined that the modified montmorillonite is 95 mg-eq/100 g with an average diameter of silicate plates ~ 77 nm, which are suitable as a modifier for the production of composite polymer materials
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