Shear banding of complex fluids

T Divoux, MA Fardin, S Manneville… - Annual Review of Fluid …, 2016 - annualreviews.org
Even in simple geometries, many complex fluids display nontrivial flow fields, with regions
where shear is concentrated. The possibility for such shear banding has been known for …

Stimuli-responsive viscosity modifiers

B Bhat, S Pahari, JSI Kwon, MES Akbulut - Advances in Colloid and …, 2023 - Elsevier
Stimuli responsive viscosity modifiers entail an important class of materials which allow for
smart material formation utilizing various stimuli for switching such as pH, temperature, light …

Dynamics of entangled linear supramolecular chains with sticky side groups: Influence of hindered fluctuations

M Ahmadi, LGD Hawke, H Goldansaz… - …, 2015 - ACS Publications
The design and effective application of supramolecular transient polymer networks based on
the assembly of entangled polymer building blocks requires not only precise description of …

A slip-spring framework to study relaxation dynamics of entangled wormlike micelles with kinetic Monte Carlo algorithm

S Pahari, B Bhadriraju, M Akbulut, JSI Kwon - Journal of Colloid and …, 2021 - Elsevier
Abstract Hypothesis Wormlike micelles (WLMs) formed due to the self-assembly of
amphiphiles in aqueous solution have similar viscoelastic properties as polymers. Owing to …

From well-entangled to partially-entangled wormlike micelles

W Zou, G Tan, H Jiang, K Vogtt, M Weaver, P Koenig… - Soft matter, 2019 - pubs.rsc.org
We combine mechanical rheometry, diffusing wave spectroscopy (DWS), and small angle
neutron scattering (SANS) with a simulation model, the “pointer algorithm”, to obtain …

Validation and refinement of unified analytic model for flexible and semiflexible polymer melt entanglement

JD Dietz, M Kroger, RS Hoy - Macromolecules, 2022 - ACS Publications
We combine molecular dynamics simulations and topological analyses (TA) to validate and
refine a recently proposed unified analytic model [Hoy, RS; Kröger, M. Phys. Rev. Lett …

Multiscale modeling of the effects of salt and perfume raw materials on the rheological properties of commercial threadlike micellar solutions

X Tang, W Zou, PH Koenig… - The Journal of …, 2017 - ACS Publications
We link micellar structures to their rheological properties for two surfactant body-wash
formulations at various concentrations of salts and perfume raw materials (PRMs) using …

Estimation of microstructural properties of wormlike micelles via a multi-scale multi-recommendation batch bayesian optimization

S Pahari, J Moon, M Akbulut, S Hwang… - Industrial & …, 2021 - ACS Publications
Microstructural properties of wormlike micelles (WLMs), which are employed in
characterizing the system to predict rheological properties, have long been obtained via …

Evaluation of constitutive models for shear-banding wormlike micellar solutions in simple and complex flows

S Varchanis, SJ Haward, CC Hopkins… - Journal of Non …, 2022 - Elsevier
Wormlike micellar solutions possess complex rheology: when exposed to a flow field, the
wormlike micelles may orientate, stretch, and break into smaller micelles. Entangled …

Topology, length scales, and energetics of surfactant micelles

S Dhakal, R Sureshkumar - The Journal of Chemical Physics, 2015 - pubs.aip.org
We study the morphology, energetics, and kinetics of a self-associating model cationic
surfactant in water using large-scale coarse-grained molecular dynamics simulations over …