Micro-mechanical prediction of the effect of surfactant concentration and external friction on the visco-elasto-plastic response of an aqueous foam

Francesca Zaccagnino, Simon Cox

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

10 Dyfyniadau(SciVal)
136 Wedi eu Llwytho i Lawr (Pure)

Crynodeb

We apply a combination of the Viscous Froth model and a surfactant transfer model [Zaccagnino et al., Phys. Rev. E, 2018, 98, 022801] to predict the rheological response of a two-dimensional dry aqueous foam. The model includes both the effect of friction between the foam and the boundaries of the container and also the dissipative effects on the film interfaces caused by surfactant motion. These dynamics are characterized by two free parameters: the Gibbs elasticity, relating surfactant concentration to interfacial tension, and the mobility of the surfactant molecules on the interfaces. We employ numerical simulations to evaluate the static shear modulus, yield stress and the storage and loss moduli of a foam and investigate the effect of our free parameters on these rheological properties.
Iaith wreiddiolSaesneg
Tudalennau (o-i)8861-8870
Nifer y tudalennau10
CyfnodolynSoft Matter
Cyfrol16
Rhif cyhoeddi38
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 27 Awst 2020

Ôl bys

Gweld gwybodaeth am bynciau ymchwil 'Micro-mechanical prediction of the effect of surfactant concentration and external friction on the visco-elasto-plastic response of an aqueous foam'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

Dyfynnu hyn