Method of producing flocculated montmorillonite

Abstract

The subject of the application is a method for obtaining flocculated montmorillonite (MMT) intended for use in polymer material processing technology, including the production of nanocomposites with high performance properties, including those based on biodegradable polymers. The method for obtaining flocculated montmorillonite consists in pre-dispersing montmorillonite in water and subjecting it to ultrasonic waves, and the resulting suspension is treated—also in an ultrasonic field—with an aqueous solution of polyvinylpyrrolidone (PVP) in such a way that the mass fractions of both dissolved components, i.e., MMT and PVP, are 1:2, respectively. Afterwards, the resulting mixture is separated into three layers, subjected to decantation, separation of the middle precipitated layer, and filtration and drying of the target product in a known manner.

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