Determination of characteristic lengths and times for wormlike micelle solutions from rheology using a mesoscopic simulation method

Zou, Weizhong; Tang, Xueming; Weaver, Mike; Koenig, Peter H.; Larson, Ronald G.

doi:10.1122/1.4919403

Cited by 37 publications

(53 citation statements)

References 61 publications

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“…For CTAB, persistence lengths that vary from tens of nm to ~1 µm were reported, depending on the specific conditions of the measured system. [26][27][28][29][30] Here we assume that the tubular CTAB template (including complexed metal ions), which is rolled around the seed particles and supports the growth of the NWs has a persistence length in the order of 1 µm. This magnitude of persistence length would prevent the NWs from coiling around the thin (~1-2 µm) fibres but will allow them to wrap around the ~10-40 µm thick fibres.…”

Section: Resultsmentioning

confidence: 99%

Metal nanowires grown in situ on polymeric fibres for electronic textiles

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Metal nanowires grown in situ on polymeric fibres for electronic textiles

et al. 2022

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“…Although the fast breaking limit leads to Maxwellian-like behavior for the linear viscoelastic properties, equilibrium micellar breakage and reptation times can be widely separated, such as for the threadlike micelle solutions studied here. Cates and Candau [9] and recent work by Zou et al [15] show that accounting for micellar breakage is necessary to fully explain the linear viscoelasticity of such systems. In the fast breaking limit, the reaction dynamics lead to a single relaxation time, which is manifested as a semi-circle in the Cole-Cole representation.…”

Section: Large Amplitude Oscillatory Shearmentioning

confidence: 99%

“…Furthermore, they developed a pointer algorithm that allows to estimate the micellar parameters more quantitatively. Subsequently, they determined the values of multiple characteristic lengths and time constants by fitting the simulation-based mesoscopic model to linear rheological data [15]. Whereas such an approach is very powerful in estimating important micellar parameters, the huge computational requirements limit its applicability in nonlinear rheology.…”

Section: Introductionmentioning

confidence: 99%

Validation of constitutive modeling of shear banding, threadlike wormlike micellar fluids

Germann¹,

Gurnon²,

Zhou³

et al. 2016

Journal of Rheology

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In this work, we assess the capability of two thermodynamically consistent, microstruture-based models to predict the rheology and microstructure of a model wormlike micellar surfactant solution known to exhibit shear banding undergoing transient simple shear and large amplitude oscillatory shear deformations in a cylindrical Couette rheometer. The microstructure of the surfactant solution was simultaneously measured during the rheometric tests using small angle neutron scattering and this data is used along with the bulk rheometry to critically evaluate the models. The first model is a new, two-species model specifically developed for wormlike micelles, whereas the second model is the well-known Giesekus model with solvent and diffusion. The new model accounts for the microstructural dynamics including flow-induced micellar breakage and recombination, which is shown to be necessary to predict some of the measured rheology and microstructure. More species should be included to improve the quantitative comparison with experiments, as well as nonlinear relaxation, as judged by the success of the Giesekus model to represent certain features of the time-dependent data. More experimental research is needed to validate the role of flow-induced breakage in the nonlinear rheology of wormlike micellar surfactant solutions.

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“…As derived from the Doi‐Edwards model, it accounts for shear banding by allowing the variation of segmental orientation but not from the kinetics of breakage‐reformation. Zou et al extended the Cates model to include constraint release, bending modes and crossover to the entanglement regime to estimate micellar parameters more quantitatively from linear viscoelastic data. This analysis does not include nonlinear data.…”

Section: Introductionmentioning

confidence: 99%

Nonhomogeneous flow of micellar solutions: A kinetic—network theory approach

et al. 2018

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The rheological behavior of micellar solutions is analyzed under nonhomogeneous velocity and stress flow conditions. The framework is based on the extended irreversible thermodynamics and the transient network formulation coupled to the underlying kinetics embodying two relevant processes: formation of wormlike chains from a free micellar solution through a thermally activated process and their flow induced degradation. The second kinetic process consists in the formation of entanglements from the free wormlike chains and their flow-induced breakage. These processes are modeled in a coupled kinetic scheme constituted by a set of reversible kinetic equations describing the evolution in average of the three microstates (free short rod-like micelles, free wormlike chains, and entangled wormlike chains) that reflect the complexity of macromolecular interactions. The predictions of the shear stress and first normal stress difference as a function of shear-rate under banded flow are in good agreement with experimental data.

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Determination of characteristic lengths and times for wormlike micelle solutions from rheology using a mesoscopic simulation method

Cited by 37 publications

References 61 publications

Metal nanowires grown in situ on polymeric fibres for electronic textiles

Metal nanowires grown in situ on polymeric fibres for electronic textiles

Validation of constitutive modeling of shear banding, threadlike wormlike micellar fluids

Nonhomogeneous flow of micellar solutions: A kinetic—network theory approach

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