Compression of Grafted Polyelectrolyte Layers

Y. Rabin; G. H. Fredrickson; P. Pincus

doi:10.1021/la00059a005

Compression of Grafted Polyelectrolyte Layers

Y. Rabin, G. H. Fredrickson, P. Pincus

Department of Physics

University of California Santa Barbara

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We calculate the repulsive dynamic force between moving surfaces bearing grafted, overlapped, polyelectrolyte layers in good solvent. This force arises due to the viscous drag excerted on the “spongelike” brushes by the solvent which is being pushed out during the steady compression. The results are compared with the static osmotic force produced by the confined counterions. We find that while the static force decreases with the addition of salt, the dynamic force is nearly independent of salt concentration. The applicability of our results to adsorbed polyelectrolyte layers is discussed.

Original language	English
Pages (from-to)	2428-2430
Number of pages	3
Journal	Langmuir
Volume	7
Issue number	11
DOIs	https://doi.org/10.1021/la00059a005
State	Published - 1 Nov 1991

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Compression of Grafted Polyelectrolyte Layers

Abstract

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