Nonlinear viscoelasticity of metastable complex fluids

Abstract

Many metastable complex fluids such as colloidal glasses and gels show distinct nonlinear viscoelasticity with increasing oscillatory-strain amplitude; the storage modulus decreases monotonically as the strain amplitude increases whereas the loss modulus has a distinct peak before it decreases at larger strains. We present a qualitative argument to explain this ubiquitous behavior and use mode coupling theory (MCT) to confirm it. We compare theoretical predictions to the measured nonlinear viscoelasticity in a dense hard sphere colloidal suspensions; reasonable agreement is obtained. The argument given here can be used to obtain new information about linear viscoelasticity of metastable complex fluids from nonlinear strain measurements.

7 pages, 3 figures, accepted for publication in Europhys. Lett

References in corpus (12)

• Nonlinear Elasticity in Biological Gels
• Rheology of Soft Glassy Materials
• Rheological constitutive equation for model of soft glassy materials
• Theory of nonlinear rheology and yielding of dense colloidal suspensions
• Schematic models for dynamic yielding of sheared colloidal glasses
• Supercooled Liquids Under Shear: Theory and Simulation
• A Molecular Hydrodynamic Theory of Supercooled Liquids and Colloidal Suspensions under Shear
• Flow curves of dense colloidal dispersions: schematic model analysis of the shear-dependent viscosity near the colloidal glass transition
• Integration through transients for Brownian particles under steady shear
• Deep electroproduction of exotic hybrid mesons
• Self-diffusion in sheared colloidal suspensions: violation of fluctuation-dissipation relation
• Non--Newtonian viscosity of interacting Brownian particles: comparison of theory and data

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