Effect of cationic surfactant adsorption on the rheological and surface properties of bentonite dispersions

Günister E., ISCI S., Oztekin N., Erim F. B. , ECE O. I. , Güngör N.

JOURNAL OF COLLOID AND INTERFACE SCIENCE, vol.303, no.1, pp.137-141, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 303 Issue: 1
  • Publication Date: 2006
  • Doi Number: 10.1016/j.jcis.2006.07.021
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.137-141
  • Keywords: bentonite, cationic surfactant, adsorption, rheology, zeta potential, COLLOID CHEMISTRY, MONTMORILLONITE, SUSPENSIONS, BROMIDE, FLOW
  • Istanbul Technical University Affiliated: Yes


In this study, the adsorption, bridging, and intercalation effects of a cationic surfactant, benzyldimethyltetradecyl ammonium chloride (BDTDACI), on bentonite clay suspensions was investigated. The adsorption, rheological behaviors, and colloidal properties of the clay dispersions were determined as a function surfactant concentration. Adsorption isotherms were obtained using the batch-equilibrium technique. The rheological behavior of the clay suspensions was obtained by shear stress shear rate measurements within 0-350 s(-1) shear rates. The structure of the composite particles was analyzed by using X-ray diffraction analysis and it was found that the expansions of basal d-spacings are less than 16.80 angstrom, suggesting a monolayer structure. (c) 2006 Elsevier Inc. All rights reserved.