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Phase behaviour of colloids plus weakly adhesive polymers

Tuinier, R.; Ouhajji, S. and Linse, P. LU (2016) In European Physical Journal E 39(11).
Abstract

Abstract.: The phase behaviour of a colloidal dispersion mediated by weakly adhesive polymers is considered. The polymers are depleted but are weakly adhesive and hence comprise a non-zero polymer concentration at the colloid’s surface, in contrast to the classical assumption in depletion theories involving a zero polymer concentration at the surface. The theory is composed of a generalized free-volume theory for colloid-polymer mixtures and a self-consistent mean-field theory for polymers at surfaces. It is found that the weak adhesion of the polymers shifts the phase stability of the colloid-polymer mixtures to higher polymer concentrations as compared to assuming a full depletion effect. The predicted phase diagrams employing the new... (More)

Abstract.: The phase behaviour of a colloidal dispersion mediated by weakly adhesive polymers is considered. The polymers are depleted but are weakly adhesive and hence comprise a non-zero polymer concentration at the colloid’s surface, in contrast to the classical assumption in depletion theories involving a zero polymer concentration at the surface. The theory is composed of a generalized free-volume theory for colloid-polymer mixtures and a self-consistent mean-field theory for polymers at surfaces. It is found that the weak adhesion of the polymers shifts the phase stability of the colloid-polymer mixtures to higher polymer concentrations as compared to assuming a full depletion effect. The predicted phase diagrams employing the new theory are consistent with experiments on mixtures of silica spheres coated with stearyl alcohol and polydimethylsiloxane in cyclohexane and with Monte Carlo simulation results. Graphical abstract: [Figure not available: see fulltext.]

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Soft Matter: Colloids and Nanoparticles
in
European Physical Journal E
volume
39
issue
11
publisher
Springer
external identifiers
  • scopus:84999176926
  • wos:000397406200001
ISSN
1292-8941
DOI
10.1140/epje/i2016-16115-5
language
English
LU publication?
yes
id
809e66c5-2010-4ac3-bea8-01de86370388
date added to LUP
2016-12-19 13:26:41
date last changed
2017-09-18 11:32:15
@article{809e66c5-2010-4ac3-bea8-01de86370388,
  abstract     = {<p>Abstract.: The phase behaviour of a colloidal dispersion mediated by weakly adhesive polymers is considered. The polymers are depleted but are weakly adhesive and hence comprise a non-zero polymer concentration at the colloid’s surface, in contrast to the classical assumption in depletion theories involving a zero polymer concentration at the surface. The theory is composed of a generalized free-volume theory for colloid-polymer mixtures and a self-consistent mean-field theory for polymers at surfaces. It is found that the weak adhesion of the polymers shifts the phase stability of the colloid-polymer mixtures to higher polymer concentrations as compared to assuming a full depletion effect. The predicted phase diagrams employing the new theory are consistent with experiments on mixtures of silica spheres coated with stearyl alcohol and polydimethylsiloxane in cyclohexane and with Monte Carlo simulation results. Graphical abstract: [Figure not available: see fulltext.]</p>},
  articleno    = {115},
  author       = {Tuinier, R. and Ouhajji, S. and Linse, P.},
  issn         = {1292-8941},
  keyword      = {Soft Matter: Colloids and Nanoparticles},
  language     = {eng},
  month        = {11},
  number       = {11},
  publisher    = {Springer},
  series       = {European Physical Journal E},
  title        = {Phase behaviour of colloids plus weakly adhesive polymers},
  url          = {http://dx.doi.org/10.1140/epje/i2016-16115-5},
  volume       = {39},
  year         = {2016},
}