Polymeric surfactants in disperse systems

Advances in Colloid and Interface Science
Tharwat F Tadros


This overview starts with a section on general classification of polymeric surfactants. Both homopolymers, block and graft copolymers are described. The solution properties of polymeric surfactants is described by using the Flory-Huggins theory. Particular attention is given to the effect of solvency of the medium for the polymer chains. The adsorption and conformation of homopolymers, block and graft copolymers at the solid/liquid interface is described. The theories of polymer adsorption and their predictions are briefly described. This is followed by a description of the experimental techniques that can be applied to study polymeric surfactant adsorption. Examples of adsorption isotherms of non-ionic polymeric surfactants are given. The effect of solvency on the adsorption amount is also described. Results for the adsorbed layer thickness of polymeric surfactants are given with particular attention to the effect of molecular weight. The interaction between particles containing adsorbed layers is described in terms of the unfavorable mixing of the stabilizing chains when these are in good solvent conditions. The entropic, volume restriction or elastic interaction that occurs on considerable overlap is also described. Combinat...Continue Reading


May 18, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Jérémie NestorTharwat F Tadros
Feb 7, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·D ExerowaTh Tadros
Apr 17, 2007·Journal of Colloid and Interface Science·Jérémie NestorTharwat F Tadros


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