Steric stabilization II

Colloidal Stability of Polymer Colloids with Different Interfacial Properties: Mechanisms

“…This would provoke a shift of the slipping plane toward the outer part of the electrical double the DLVO theory (Eqs. [4] and [5]) without the Reerink and Overbeek approximations. These values are presented layer, and thus, the associated z potential would therefore have a smaller value.…”

Steric stabilisation: A reappraisal of current theory

“…In two recent articles to this journal Evans and Napper (7,8) have asserted that the theories proposed by Meier (5), and by Hesselink, Vrij and Overbeek (6) are incorrect in that they distinguish two separate, additive contributions to the steric interactions; (a), the so-called "volume restriction term", associated with the reduction in the total number of conformations available to the adsorbed polymer on the approach of a second particle; (b), the so-called "free energy of mixing (or osmotic) term", associated with changes in the mixing of polymer segmentssolvent molecules as the particles approach. Evans and Napper (7,8) claim that effect (b) in fact incorporates effect (a). Whilst we believe there are a number of fundamental errors in the Meier (5) and Hesselink et al (6).…”

Investigation of adsorbed polymer layers by flocculation of oppositely charged sols III. Effect of molecular mass of polymers

“…Only scant attention has been directed to the role of the molecular mass of adsorbed polymers in steric stabilization, as well. The theories of steric stabilization do not directly interpret this question [3,4,5]. Namely, no direct relationship between the molecular weight of a polymer and its ability to stabilize a dispersion can be established.…”