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@PHDTHESIS{Riest:810730,
author = {Riest, Jonas},
title = {{D}ynamics in colloid and protein systems:
{H}ydrodynamically structured particles, and dispersions
with competing attractive and repulsive interactions},
volume = {127},
school = {Universität Düsseldorf},
type = {Dr.},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2016-03322},
isbn = {978-3-95806-153-8},
series = {Schriften des Forschungszentrums Jülich. Reihe
Schlüsseltechnologien / Key Technologies},
pages = {IX, 226 S.},
year = {2016},
note = {Universität Düsseldorf, Diss., 2016},
abstract = {In this thesis, we develop and apply a toolbox of versatile
theoretical methods of calculating structural, and
short-time and long-time dynamic properties of three classes
of industrially important dispersions. The first one are
suspensions of hydrodynamically structured colloidal
particles, and here most notably non-ionic microgels. The
second class are dispersions of submicron sized
charge-stabilized colloidal globules, and the third one are
globular protein solutions with competing short-range
attraction (SA) and long-range repulsion (LR). The results
for the transport, structure, and thermodynamic properties
of charge-stabilized colloids are used as input in our
realistic macroscopic diffusion-advection modeling of the
membrane cross-flow ultrafiltration of silica particles
dispersions. The thesis bridges thus the gap from the
theoretical exploration of intra-particle properties such as
solvent permeability, particle softness, and surface charge,
to the calculation of transport, structural, and
thermodynamic properties of concentrated dispersions, and to
the modeling of a technologically important fltration
process. The accuracy of our toolbox methods is assessed by
the comprehensive comparison with experimental measurements
of, and simulation results for static and dynamic
properties. The considered dynamic properties include short-
and long-time self-diusion and sedimentation coefficients,
the wavenumber-dependent diffusion function determined
routinely in dynamic scattering experiments, and the zero-
and high-frequency shear viscosities. In particular, we
provide various analytic transport coefficient expressions
for rigid permeable particles that can be readily used for
the analysis of dynamic scattering and rheology data. The
toolbox methods for the calculation of transport properties
of concentrated dispersions of globular colloidal particles
with internal hydrodynamic structure are based on the
hydrodynamic radius model (HRM) wherein the internal
particle structure is mapped on an effective hydrodynamic
radius for unchanged direct interactions. The good
performance of the HRM is demonstrated by comparison with
dynamic light scattering experiments on concentrated
suspensions of solvent permeable non-ionic microgels.
Furthermore, we quantify the effect of particle softness and
permeability on the dynamics of ionic microgel suspensions,
and we characterize the particle interactions and
microstructure inpolydisperse amphoteric microgel systems in
the zwitterionic regime. [...]},
cin = {ICS-3},
cid = {I:(DE-Juel1)ICS-3-20110106},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551)},
pid = {G:(DE-HGF)POF3-551},
typ = {PUB:(DE-HGF)11},
url = {https://juser.fz-juelich.de/record/810730},
}