Article Dans Une Revue Macromolecular Symposia Année : 2003

Polymer gels and brushes at surfaces

Résumé

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.

Dates et versions

hal-00192915 , version 1 (29-11-2007)

Identifiants

Citer

T.A. Vilgis, J.-F. Joanny, A. Johner. Polymer gels and brushes at surfaces. Macromolecular Symposia, 2003, 200 (1), pp.67-80. ⟨10.1002/masy.200351007⟩. ⟨hal-00192915⟩
56 Consultations
0 Téléchargements

Altmetric

Partager

  • More