On the shear banding flow of elongated micellar solutions

  title={On the shear banding flow of elongated micellar solutions},
  author={F. Bautista and J. Soltero and J. H. P{\'e}rez-L{\'o}pez and J. E. Puig and O. Manero},
  journal={Journal of Non-newtonian Fluid Mechanics},
Abstract Under steady shear flow, elongated micellar solutions show shear stress saturation above a critical shear rate due to the formation of shear bands that result in non-homogeneous flow. Long transients and oscillations accompany this stress plateau. When measurements are done with a controlled stress rheometer, frequently a metastable branch is observed. At higher shear rates, a second upturn is observed above a second critical shear rate, which indicates that homogeneous flow is… Expand
On the shear thickening flow of dilute CTAT worm-like micellar solutions
Dilute solutions of worm-like micelles exhibit shear thickening caused by microstructural changes under specific flow conditions. In this work, for the first time, shear thickening in parallel plateExpand
Steady shear banding in complex fluids
Abstract Shear banding (SB) is manifested by the abrupt “demixing” of the flow into regions of high and low shear rate. In this paper, we first relate analytically the rheological parameters of theExpand
Jetting of a shear banding fluid in rectangular ducts.
The results show that nonuniform flow of shear thinning fluids can develop across the wide dimension in rectangular microfluidic channels, with implications for micro fluidic rheometry. Expand
Bulk and interfacial modes of instability in channel flow of thixotropic-viscoelasto-plastic fluids with shear-banding
Abstract We carry out a linear stability analysis of the generalised BMP model, which incorporates the shear-banding phenomenon into flows of thixotropic-viscoelasto-plastic fluids: common behavioursExpand
Kinetics and mechanism of shear banding in an entangled micellar solution
We have studied shear banding in Couette flow using a combination of particle tracking velocimetry (PTV), small angle light scattering, microscopic visualization, and flow birefringence.Expand
Numerical Modeling of Shear Banding Formation in Rheometry
The paper is dedicated to the numerical modeling of materials, such as complex fluids, which exhibit intrinsic material instability in viscometric flows. Some notorious examples of complex fluids areExpand
Oscillation superimposed on steady shearing: Measurements and predictions for wormlike micellar solutions
Measurements are made of the viscoelastic properties of a wormlike micellar solution undergoing steady shearing. The wormlike micellar solution has a clearly defined Maxwell response in oscillation.Expand
Transient flow of viscoelastic, thixotropic fluid in a vane rheometer or infinite slot
Abstract Transient flow of a thixotropic viscoelastic fluid in a wide-gap Searle (or vane) viscometer is modelled using the MBM constitutive relation (E. Boek, J. Padding, V. Anderson, P. Tardy, J.Expand
Stability analysis of shear banding flow with the BMP model
Abstract The Bautista–Manero–Puig (BMP) model, consisting of the upper-convected Maxwell constitutive equation coupled to a kinetic equation that takes into account structural changes induced byExpand
Modeling the inhomogeneous response and formation of shear bands in steady and transient flows of entangled liquids
We simulate the spatial and temporal evolution of inhomogeneous flow fields in viscometric devices such as cylindrical Couette cells. The computations focus on a class of two species elastic networkExpand


The Rheology of Entangled Polymers at Very High Shear Rates
One of the (few) unrealistic features of the Doi-Edwards model for entangled polymers is that it predicts a steady-state shear stress which decreases indefinitely as the shear rate is increased. AsExpand
Shear-band formation in a non-Newtonian fluid model with a constitutive instability
We examine the behaviour in shear of a viscoelastic fluid model (Johnson-Segalman fluid plus a Newtonian contribution) which exhibits a constitutive instability with respect to shear banding. BecauseExpand
Rheology of Cetyltrimethylammonium p-Toluenesulfonate−Water System. 3. Nonlinear Viscoelasticity
The nonlinear viscoelastic behavior of the cetyltrimethylammonium p-toluenesulfonate (CTAT)−water system is investigated in steady and unsteady shear flow as a function of surfactant concentrationExpand
Oscillations in Piston-Driven Shear Flow of a Non-Newtonian Fluid
In recent experiments on piston-driven shear flow of a highly elastic and very viscous non-Newtonian fluid, Lim and Schowalter observed nearly periodic oscillations in the particle velocity at theExpand
Non-linear flow properties of viscoelastic surfactant solutions
This paper gives a quantitative description of the viscoelastic properties of aqueous solutions of entangled rod-shaped micelles. The experimental data are compared with the theoretical predictionsExpand
Nonlinear rheology of wormlike micelles.
This work explains behavior of viscoelastic surfactant solutions in terms of the ``reptation-reaction'' model for the dynamics of reversibly breakable, polymerlike micelles, which leads to flow instability of shear-banding type. Expand
Rheo-Optical Study of Worm-like Micelles Undergoing a Shear Banding Flow
We report in this letter a rheo-optical study of the non-linear behaviour of a solution of worm-like micelles made of aqueous surfactant solutions of cetyltrimethylammonium chloride (CTAC) withExpand
Shear-Induced Isotropic-to-Nematic Phase Transition in Equilibrium Polymers
We report on a first-order isotropic-to-nematic phase transition induced by shear in concentrated solutions of elongated flexible wormlike micelles. As shear is applied to a disordered micellarExpand
Analysis of time-dependent non-linear stress-growth data for shear and elongational flow of a low-density branched polyethylene melt
SummaryA single integral constitutive equation is presented, which gives a reasonable description of the non-linear shear and elongational behavior of a low-density branched polyethylene melt atExpand
The Visco-elastic Properties of Network Structure III. Normal Stress Effect (Weissenberg Effect)
A statistical mechanical theory of the so-called Weissenberg effect (or, normal stress effect) is presented. We adopt the weakly coupled rubber-like network model which we have formulated and appliedExpand