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, cilt.303, ss.137-141, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 303 Konu: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.jcis.2006.07.021
  • Dergi Adı: JOURNAL OF COLLOID AND INTERFACE SCIENCE
  • Sayfa Sayıları: ss.137-141

Özet

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.