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Structure and Dynamics of Soft Repulsive Colloidal Suspensions in the Vicinity of the Glass Transition

Crassous, Jerome LU ; Casal-Dujat, Lucia LU ; Medebach, Martin LU ; Obiols-Rabasa, Marc LU ; Vincent, Romaric ; Reinhold, Frank ; Boyko, Volodymyr ; Willerich, Immanuel ; Menzel, Andreas and Moitzi, Christian , et al. (2013) In Langmuir 29(33). p.10346-10359
Abstract
We use a combination of different scattering techniques and rheology to highlight the link between structure and dynamics of dense aqueous suspensions of soft repulsive colloids in the vicinity of a glass transition. Three different latex formulations with an increasing amount of the hydrophilic component resulting in either purely electrostatically or electrosterically stabilized suspensions are investigated. From the analysis of the static structure factor measured by small-angle X-ray scattering, we derive an effective volume fraction that includes contributions from interparticle interactions. We further investigate the dynamics of the suspensions using 3D cross-correlation dynamic light scattering (3DDLS) and rheology. We analyze the... (More)
We use a combination of different scattering techniques and rheology to highlight the link between structure and dynamics of dense aqueous suspensions of soft repulsive colloids in the vicinity of a glass transition. Three different latex formulations with an increasing amount of the hydrophilic component resulting in either purely electrostatically or electrosterically stabilized suspensions are investigated. From the analysis of the static structure factor measured by small-angle X-ray scattering, we derive an effective volume fraction that includes contributions from interparticle interactions. We further investigate the dynamics of the suspensions using 3D cross-correlation dynamic light scattering (3DDLS) and rheology. We analyze the data using an effective hard sphere model and in particular compare the linear viscoelasticity and flow behavior to the predictions of mode coupling theory, which accounts for a purely kinetic glass transition determined by the equilibrium structure factor. We demonstrate that seemingly very different colloidal systems exhibit the same generic behavior when the effects from interparticle interactions are incorporated using an effective volume fraction description. (Less)
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type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
29
issue
33
pages
10346 - 10359
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000323472000007
  • scopus:84882610271
  • pmid:23875751
ISSN
0743-7463
DOI
10.1021/la4016542
language
English
LU publication?
yes
id
a70f38aa-51aa-4ec8-a153-895ae4f320a8 (old id 4063408)
date added to LUP
2016-04-01 10:48:27
date last changed
2020-01-12 05:40:55
@article{a70f38aa-51aa-4ec8-a153-895ae4f320a8,
  abstract     = {We use a combination of different scattering techniques and rheology to highlight the link between structure and dynamics of dense aqueous suspensions of soft repulsive colloids in the vicinity of a glass transition. Three different latex formulations with an increasing amount of the hydrophilic component resulting in either purely electrostatically or electrosterically stabilized suspensions are investigated. From the analysis of the static structure factor measured by small-angle X-ray scattering, we derive an effective volume fraction that includes contributions from interparticle interactions. We further investigate the dynamics of the suspensions using 3D cross-correlation dynamic light scattering (3DDLS) and rheology. We analyze the data using an effective hard sphere model and in particular compare the linear viscoelasticity and flow behavior to the predictions of mode coupling theory, which accounts for a purely kinetic glass transition determined by the equilibrium structure factor. We demonstrate that seemingly very different colloidal systems exhibit the same generic behavior when the effects from interparticle interactions are incorporated using an effective volume fraction description.},
  author       = {Crassous, Jerome and Casal-Dujat, Lucia and Medebach, Martin and Obiols-Rabasa, Marc and Vincent, Romaric and Reinhold, Frank and Boyko, Volodymyr and Willerich, Immanuel and Menzel, Andreas and Moitzi, Christian and Reck, Bernd and Schurtenberger, Peter},
  issn         = {0743-7463},
  language     = {eng},
  number       = {33},
  pages        = {10346--10359},
  publisher    = {The American Chemical Society (ACS)},
  series       = {Langmuir},
  title        = {Structure and Dynamics of Soft Repulsive Colloidal Suspensions in the Vicinity of the Glass Transition},
  url          = {http://dx.doi.org/10.1021/la4016542},
  doi          = {10.1021/la4016542},
  volume       = {29},
  year         = {2013},
}