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          Institute: MPI für Polymerforschung     Collection: MPI Polymerforschung     Display Documents



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ID: 59859.0, MPI für Polymerforschung / MPI Polymerforschung
Polymer gels and brushes at surfaces
Authors:Vilgis, Thomas A.; Joanny, J. F.; Johner, A.
Language:English
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Macromolecular Symposia
Journal Abbrev.:Macromol. Symp.
Volume:200
Issue / Number:1
Start Page:67
End Page:80
Review Status:not specified
Audience:Not Specified
Abstract / Description:We discuss the adsorption of polymer gels on flat surfaces. Even in cases of complete wetting, where the spreading power S is positive and where an equivalent liquid would spread, the elastic stresses due to the gel deformation upon adsorption oppose spreading. The competition between elasticity characterized by the bulk shear modulus G and capillarity, characterized by the spreading power S, defines a typical length scale 1 = S/G for the deformation in the gel. Macroscopic gels larger than 1 deform only at their edges over a region of size 1. Microscopic gels show a finite deformation despite the elastic stresses. These results can be compared to confined polymer brushes.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Polymerforschung
External Affiliations:Inst Charles Sadron, Lab Europeen Associe, 6 Rue Boussingault, F-67083 Strasbourg, France.
Identifiers:LOCALID:P-03-196
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