On the elusive nature of Carbopol gels: “model”, weakly thixotropic, or time-dependent viscoplastic materials?
Résumé
The question of whether Carbopol gels always behave as "model" yield stress material is addressed experimentally. Prompted by several simple hydrodynamic experiments performed with Carbopol gels that can not be fully understood within the commonly accepted "model" picture, we revisit the yielding behaviour of a Carbopol gel. When subjected to a loading/unloading process, the yielding of the Carbopol is gradual and exhibits a rheological
Domaines
Thermique [physics.class-ph]
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Carbopol_Unsteady_Second_Revision_UNMarked (1).pdf (53.51 Mo)
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