Swelling kinetics of a polyelectrolyte gel in water and salt solutions. Coexistence of swollen and collapsed phases

Tatiana Budtova; Patrick Navard

Swelling kinetics of a polyelectrolyte gel in water and salt solutions. Coexistence of swollen and collapsed phases

Tatiana Budtova ¹ Patrick Navard ¹

1 CEMEF - Centre de Mise en Forme des Matériaux

Abstract : The swelling of polyelectrolyte gels in water and salt solutions is associated with the presence of up to three coexisting phases: a dry phase, a swollen phase, and a collapsed one due to the binding of metal ions to polyions. Swelling in pure water proceeds in two ways: a transition from the dry to swollen state, whose kinetics scales with the square of the initial gel size, and a further swelling that scales linearly with the initial gel size. We show that there exist various swelling paths depending on the gel interaction with metal ions and their concentration.

Keywords : Gels Macromolecules Solutions Swelling Water

Type de document :

Article dans une revue

Domaine :

Sciences de l'ingénieur [physics] / Matériaux

Liste complète des métadonnées

https://hal-mines-paristech.archives-ouvertes.fr/hal-00613101
Contributeur : Magalie Prudon <>
Soumis le : mardi 2 août 2011 - 16:45:07
Dernière modification le : lundi 12 novembre 2018 - 11:05:38

Swelling kinetics of a polyelectrolyte gel in water and salt solutions. Coexistence of swollen and collapsed phases

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Swelling kinetics of a polyelectrolyte gel in water and salt solutions. Coexistence of swollen and collapsed phases

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135

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