Volume 48, Number 1, October I 1999
|Page(s)||93 - 98|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 September 2002|
Rheological memory effect in aqueous foam
Université de Marne-la-Vallée, Laboratoire de Physique des Matériaux Divisés et Interfaces - 5 Boulevard Descartes, F-77454 Marne-la-Vallée Cedex, France
Accepted: 26 July 1999
We have measured the complex shear modulus G* of aqueous foam before and after applying a strain of the order of the yield strain for a brief period of time. After such a mechanical perturbation we observe transient "strain softening”: the real part of G* is smaller than before and as the foam aging process goes on, it slowly relaxes towards the values obtained for quiescent foam. The characteristic time scale of this relaxation increases with the foam age at which the perturbation is applied, following a scaling law.
PACS: 82.70.Rr – Aerosols and foams / 83.70.Hq – Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc / 83.50.By – Transient deformation and flow, time-dependent properties: start-up, stress relaxation, creep, recovery, etc
© EDP Sciences, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.