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Influence of added particles on the phase behavior of polymer solutions. Analysis by mean-field lattice theory

Olsson, Martin LU ; Linse, Per LU and Piculell, Lennart LU (2005) In Langmuir 21(23). p.10862-10870
Abstract
The influence of added colloidal particles on the phase stability of polymer solutions is investigated theoretically. The polymer has an affinity to the particle surface. A mean-field lattice theory based on the Flory-Huggins theory is used to calculate the phase behavior in solutions containing a single polymer component and particles. The particles are described in two different ways. The first approach considers the surface free energy associated with added solid particles and the mixing entropy of the particles. In the second approach, the particles are simply modeled as large polymers. Both ways of describing the added particles show that the added particles decrease the stability of the polymer solution when the polymer-particle... (More)
The influence of added colloidal particles on the phase stability of polymer solutions is investigated theoretically. The polymer has an affinity to the particle surface. A mean-field lattice theory based on the Flory-Huggins theory is used to calculate the phase behavior in solutions containing a single polymer component and particles. The particles are described in two different ways. The first approach considers the surface free energy associated with added solid particles and the mixing entropy of the particles. In the second approach, the particles are simply modeled as large polymers. Both ways of describing the added particles show that the added particles decrease the stability of the polymer solution when the polymer-particle attraction is strong. A higher particle concentration enhances the effect. Experiments where polystyrene latex particles are added at different concentrations to aqueous dispersions of ethyl(hydroxyethyl)cellulose (EHEC) support the theoretical findings. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
21
issue
23
pages
10862 - 10870
publisher
The American Chemical Society
external identifiers
  • wos:000233129500096
  • scopus:28044467748
ISSN
0743-7463
DOI
10.1021/la051343j
language
English
LU publication?
yes
id
cc24fc46-234f-42a5-81fa-8edf19e2d099 (old id 157526)
date added to LUP
2007-07-12 09:11:47
date last changed
2017-01-01 04:50:17
@article{cc24fc46-234f-42a5-81fa-8edf19e2d099,
  abstract     = {The influence of added colloidal particles on the phase stability of polymer solutions is investigated theoretically. The polymer has an affinity to the particle surface. A mean-field lattice theory based on the Flory-Huggins theory is used to calculate the phase behavior in solutions containing a single polymer component and particles. The particles are described in two different ways. The first approach considers the surface free energy associated with added solid particles and the mixing entropy of the particles. In the second approach, the particles are simply modeled as large polymers. Both ways of describing the added particles show that the added particles decrease the stability of the polymer solution when the polymer-particle attraction is strong. A higher particle concentration enhances the effect. Experiments where polystyrene latex particles are added at different concentrations to aqueous dispersions of ethyl(hydroxyethyl)cellulose (EHEC) support the theoretical findings.},
  author       = {Olsson, Martin and Linse, Per and Piculell, Lennart},
  issn         = {0743-7463},
  language     = {eng},
  number       = {23},
  pages        = {10862--10870},
  publisher    = {The American Chemical Society},
  series       = {Langmuir},
  title        = {Influence of added particles on the phase behavior of polymer solutions. Analysis by mean-field lattice theory},
  url          = {http://dx.doi.org/10.1021/la051343j},
  volume       = {21},
  year         = {2005},
}