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Adsorption of Neutral-Highly Charged Diblock Copolymers in Selective Solvents

Published online by Cambridge University Press:  25 February 2011

N. Dan-Brandon  and
M. Tirrell
N. Dan-Brandon
Affiliation:
Department of Chemical Engineering and Material Science, University of Minnesota, Minneapolis, MN 55455
M. Tirrell
Affiliation:
Department of Chemical Engineering and Material Science, University of Minnesota, Minneapolis, MN 55455
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Abstract

We apply a scaling model to study adsorption of neutral-strongly charged diblock copolymer from concentrated salt solutions, where the range of electrostatic interactions is smaller than that of excluded volume correlations. Adsorbed layer structure is determined by an equilibrium between the solvated block stretching energy, surface-adsorbed block interactions, and the solution chemical potential. We find that adsorption from micellar solutions results in a lower surface density than adsorption from solutions below the CMC. In both cases the surface density increases, and the layer thickness decreases, with salt concentration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 248: Symposium O – Complex Fluids , 1991 , 401
Copyright
Copyright © Materials Research Society 1992

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