Structure, dynamics, and rheology of concentrated dispersions of poly(ethylene glycol)-grafted colloids
Zackrisson Oskolkova, Malin LU ; Stradner, Anna LU ; Schurtenberger, Peter LU
and Bergenholtz, Johan
(2006)
In Physical Review E
73(1).
p.1-011408
- Abstract
- A comprehensive experimental study of the dynamics and rheology of concentrated aqueous dispersions of
polyethylene glycol-grafted colloidal spheres is reported. The study focuses on good solvent conditions, for
which excluded-volume interactions dominate. At high concentrations a glass transition is evident from the
nondecaying component of the intensity correlation function measured with three-dimensional dynamic light
scattering. Results for the linear viscoelastic and steady shear rheology on approaching the glass transition
correlate well with the slowing of the diffusive dynamics; in particular, at, or close to, the concentration where
the dynamics becomes nonergodic, the... (More) - A comprehensive experimental study of the dynamics and rheology of concentrated aqueous dispersions of
polyethylene glycol-grafted colloidal spheres is reported. The study focuses on good solvent conditions, for
which excluded-volume interactions dominate. At high concentrations a glass transition is evident from the
nondecaying component of the intensity correlation function measured with three-dimensional dynamic light
scattering. Results for the linear viscoelastic and steady shear rheology on approaching the glass transition
correlate well with the slowing of the diffusive dynamics; in particular, at, or close to, the concentration where
the dynamics becomes nonergodic, the dispersions acquire a low-frequency plateau in the elastic shear modulus
as well as a yield stress. The overall behavior of the dispersions conforms to that of hard-sphere dispersions;
however, some qualitative differences are observed in the evolution of the dynamics and rheology with
increasing concentration near the glass transition. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3363748
- author
- Zackrisson Oskolkova, Malin
LU
; Stradner, Anna
LU
; Schurtenberger, Peter
LU
and Bergenholtz, Johan
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- colloids, hard sphere interactions, rheology, nonergodic, glass transition
- in
- Physical Review E
- volume
- 73
- issue
- 1
- pages
- 1 - 011408
- publisher
- American Physical Society
- external identifiers
-
- scopus:32844467989
- pmid:16486141
- ISSN
- 1063-651X
- DOI
- 10.1103/PhysRevE.73.011408
- language
- English
- LU publication?
- no
- id
- 36c6a206-f9c4-4cc4-b15e-2ecd407e9c0e (old id 3363748)
- date added to LUP
- 2016-04-04 10:27:27
- date last changed
- 2022-04-16 01:50:36
@article{36c6a206-f9c4-4cc4-b15e-2ecd407e9c0e,
abstract = {{A comprehensive experimental study of the dynamics and rheology of concentrated aqueous dispersions of<br/><br>
polyethylene glycol-grafted colloidal spheres is reported. The study focuses on good solvent conditions, for<br/><br>
which excluded-volume interactions dominate. At high concentrations a glass transition is evident from the<br/><br>
nondecaying component of the intensity correlation function measured with three-dimensional dynamic light<br/><br>
scattering. Results for the linear viscoelastic and steady shear rheology on approaching the glass transition<br/><br>
correlate well with the slowing of the diffusive dynamics; in particular, at, or close to, the concentration where<br/><br>
the dynamics becomes nonergodic, the dispersions acquire a low-frequency plateau in the elastic shear modulus<br/><br>
as well as a yield stress. The overall behavior of the dispersions conforms to that of hard-sphere dispersions;<br/><br>
however, some qualitative differences are observed in the evolution of the dynamics and rheology with<br/><br>
increasing concentration near the glass transition.}},
author = {{Zackrisson Oskolkova, Malin and Stradner, Anna and Schurtenberger, Peter and Bergenholtz, Johan}},
issn = {{1063-651X}},
keywords = {{colloids; hard sphere interactions; rheology; nonergodic; glass transition}},
language = {{eng}},
number = {{1}},
pages = {{1--011408}},
publisher = {{American Physical Society}},
series = {{Physical Review E}},
title = {{Structure, dynamics, and rheology of concentrated dispersions of poly(ethylene glycol)-grafted colloids}},
url = {{http://dx.doi.org/10.1103/PhysRevE.73.011408}},
doi = {{10.1103/PhysRevE.73.011408}},
volume = {{73}},
year = {{2006}},
}