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Adsorption of cationic polyelectrolytes at clay-colloid interface in dilute aqueous suspensions — effect of the ionic strength of the medium

  • G. Durand
  • F. Lafuma
  • R. Audebert
Interfaces
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 76)

Abstract

The behavior of dilute clay colloids/cationic copolymers systems is investigated as a function of the ionic strength I of the medium for various charge levels of the polyelectrolyte chain. Changing I not only has an inflauence on the interaction between the surface and the electrostatically bound segments but can also more or less affect the copolymer conformation according to its ionicity degree. The dependence of adsorption and flocculation processes on the ionic strength can be explained through these both effects.

Key words

Adsorption flocculation polyelectrolyte colloid ionic strength clay-colloid interface aqueous suspensions 

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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1988

Authors and Affiliations

  • G. Durand
    • 1
  • F. Lafuma
    • 1
  • R. Audebert
    • 1
  1. 1.Laboratoire de Physico-Chimie MacromoléculaireUniversité Pierre et Marie Curie Unité Associée mau CNRS no 278 E.S.P.C.I.Paris Cedex 05France

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