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 Name: JOURNAL OF COLLOID AND INTERFACE SCIENCE
  • 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

Abstract

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.