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Coarse-Graining of Ionic Microgels: Theory and Experiment

Riest, Jonas; Mohanty, Priti; Schurtenberger, Peter LU and Likos, Christos N. (2012) In Zeitschrift für Physikalische Chemie 226(7-8). p.711-735
Abstract
In this work, we discuss the statistical mechanics of many-body systems consisting of electrically charged microgels, and we show that their collective behavior is determined by an interplay between the screened electrostatic and the elastic contributions to their effective interaction potential. The former is derived by means of a statistical-mechanical approach due to Denton [A. R. Denton, Phys. Rev. E 67, 011804 (2003)], and it includes the screened electrostatic potential between penetrable spheres and the counterion entropic contribution. The latter is based on the Hertzian model of the theory of elasticity. Comparisons with experimental results demonstrate the realistic nature of the coarse-graining procedure, which makes it possible... (More)
In this work, we discuss the statistical mechanics of many-body systems consisting of electrically charged microgels, and we show that their collective behavior is determined by an interplay between the screened electrostatic and the elastic contributions to their effective interaction potential. The former is derived by means of a statistical-mechanical approach due to Denton [A. R. Denton, Phys. Rev. E 67, 011804 (2003)], and it includes the screened electrostatic potential between penetrable spheres and the counterion entropic contribution. The latter is based on the Hertzian model of the theory of elasticity. Comparisons with experimental results demonstrate the realistic nature of the coarse-graining procedure, which makes it possible to put forward theoretical predictions on the phase diagram of ionic microgels and on the behavior of soft, neutral microgels under confinement in narrow pores. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Microgels, Statistical Mechanics, Density Functional Theory
in
Zeitschrift für Physikalische Chemie
volume
226
issue
7-8
pages
711 - 735
publisher
Oldenbourg Wissenschaftsverlag
external identifiers
  • wos:000309080300012
  • scopus:84866102208
ISSN
0942-9352
DOI
10.1524/zpch.2012.0258
language
English
LU publication?
yes
id
3169aa50-1009-4621-bd5d-388eb0f316b5 (old id 3135863)
date added to LUP
2012-11-01 16:25:16
date last changed
2017-03-26 04:07:00
@article{3169aa50-1009-4621-bd5d-388eb0f316b5,
  abstract     = {In this work, we discuss the statistical mechanics of many-body systems consisting of electrically charged microgels, and we show that their collective behavior is determined by an interplay between the screened electrostatic and the elastic contributions to their effective interaction potential. The former is derived by means of a statistical-mechanical approach due to Denton [A. R. Denton, Phys. Rev. E 67, 011804 (2003)], and it includes the screened electrostatic potential between penetrable spheres and the counterion entropic contribution. The latter is based on the Hertzian model of the theory of elasticity. Comparisons with experimental results demonstrate the realistic nature of the coarse-graining procedure, which makes it possible to put forward theoretical predictions on the phase diagram of ionic microgels and on the behavior of soft, neutral microgels under confinement in narrow pores.},
  author       = {Riest, Jonas and Mohanty, Priti and Schurtenberger, Peter and Likos, Christos N.},
  issn         = {0942-9352},
  keyword      = {Microgels,Statistical Mechanics,Density Functional Theory},
  language     = {eng},
  number       = {7-8},
  pages        = {711--735},
  publisher    = {Oldenbourg Wissenschaftsverlag},
  series       = {Zeitschrift für Physikalische Chemie},
  title        = {Coarse-Graining of Ionic Microgels: Theory and Experiment},
  url          = {http://dx.doi.org/10.1524/zpch.2012.0258},
  volume       = {226},
  year         = {2012},
}