Influence of the solvent system on gel viscosity of montmorillonite/alkylammonium complexes

The alkylammonium cations adsorption character in organomontmorillonite(OM) interlayers and gelling properties of OM are important research aspects in the preparation and application of OM.

The alkyl-ammonium adsorption amount in the montmorillonite is the determinate factor which influences the modi-fication effect.

A new method for quantitative characterization of the alkyl-ammonium adsorbed in the layer was established.

In this paper,the research status quo of the methods for determination of layer charge density were presented;the theories and measurement procedure of alkylammonium method,structural formulae method,cation exchange capacity method and methylene blue method were introduced in detail; advantages and disadvantages of each method were compared.

Study on the flocculability of the bentonite modified by different alkyl quaternary ammonium salts;

Organic modification of bentonite by a series of alkyl quaternary ammonium salts are examined through mass-lost and XRD measuring.