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@INPROCEEDINGS{Brito:874672,
author = {Brito, Mariano and Riest, Jonas and Denton, Alan and
Naegele, Gerhard},
title = {{C}omparison of {D}ifferent {M}ethods for {C}alculating
{E}ffective {I}nteractions and {P}ressure in
{C}harge-stabilized {D}ispersions},
reportid = {FZJ-2020-01588},
year = {2017},
abstract = {Charge-stabilized suspensions have interesting static and
dynamic features, reflected in properties such as the
suspension osmotic pressure, generalized sedimentation
coefficient and viscosity. These properties are determined
by electro-steric and (partially) by electro-hydrodynamic
interactions. Due to the large size asymmetry between the
colloidal macroions and the small microions, the degrees of
freedom of the latter can be integrated out, resulting in an
effective one-component interaction potential describing
microion-dressed colloidal quasi-particles. We present a
comparison, and partial extension, of various methods of
calculating effective colloidal interaction parameters
including effective charges and screening constants [1].
Additionally, we discuss osmotic suspension pressure
calculations for dispersions in Donnan equilibrium with a
salt ion reservoir. We discuss methods including cell-models
[2,3], renormalized jellium models [4], and
multi-colloid-centered mean-field models [5,6]. The pros and
cons of the various methods are assessed by comparison with
primitive model based computer simulations.References[1] M.
Brito, J. Riest, A. Denton and G. Nägele, to be submitted
(2017).[2] S. Alexander et al., J. Chem. Phys. 80, 5776
(1984).[3] E. Trizac et al., Langmuir 19, 4027 (2003).[4] S.
Pianegonda et al., J. Chem. Phys. 126, 014702 (2007).[5] A.
R, Denton, J. Phys.: Condens. Matter 20, 494230 (2008).[6]
N. Boon et al., PNAS 112, 30, 9242, (2015).},
month = {Jul},
date = {2017-07-17},
organization = {10th Liquid Matter Conference,
Ljubljana (Slovenia), 17 Jul 2017 - 21
Mar 2020},
subtyp = {Other},
cin = {IBI-4},
cid = {I:(DE-Juel1)IBI-4-20200312},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551)},
pid = {G:(DE-HGF)POF3-551},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/874672},
}