Abstract

Anastasia Karpovich, Maria Vlasova, Natalya Sapronova, Valentin Sukharev and Victor Ivanov*

DOI : http://dx.doi.org/10.13005/ojc/320346

The interaction between Laponite and other constituents in complex systems greatly depends on its available surface area. We report a study of exfoliation dynamics of Laponite in aqueous suspensions by NMR relaxometry. It showed that Laponite particles exfoliate to the same extent in a concentration range of 0.5-3% w/w. Faster increase of specific wetted surface area of Laponite particles in more concentrated suspensions suggests faster exfoliation of disc-shaped Laponite platelets from the initial layered structure.

NMR relaxometry; Laponite; exfoliation; clays

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