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Article Dans Une Revue European Physical Journal E: Soft matter and biological physics Année : 2009

Oscillatory Dynamics Induced in Polyelectrolyte Gels by a Non-Oscillatory Reaction: A Model.

Jacques Boissonade
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Résumé

We develop a general model and the associated numerical algorithm to compute the swelling dynamics of chemo-responsive polyelectrolyte gels immersed in a reactive ionic solution kept at a non-equilibrium stationary state by a permanent feed of fresh reactants. Using an autocatalytic bistable but non-oscillatory reaction, namely, the bromate-sulfite reaction, we predict that a piece of hydrogel that swells/shrinks as a function of pH, can exhibit spontaneous mechanical and chemical oscillations. This constitutes the extension to realistic and experimentally feasible conditions of results previously obtained on a toy model with artificial swelling conditions.
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Dates et versions

hal-00324000 , version 1 (23-09-2008)
hal-00324000 , version 2 (19-01-2009)

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Citer

Jacques Boissonade. Oscillatory Dynamics Induced in Polyelectrolyte Gels by a Non-Oscillatory Reaction: A Model.. European Physical Journal E: Soft matter and biological physics, 2009, 28 (3), pp.337. ⟨10.1140/epje/i2008-10425-1⟩. ⟨hal-00324000v2⟩

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