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Capillary-induced phase separation in mixed polymer solutions. A lattice mean-field calculation study

Joabsson, Fredrik and Linse, Per LU (2002) In The Journal of Physical Chemistry Part B 106(15). p.3827-3834
Abstract
The formation of a capillary phase in segregating mixed polymer solutions confined between two planar walls is modeled by using a lattice mean-field theory for flexible polymers in solution. A capillary-induced phase separation (CIPS) may appear in systems where the two polymer components display different preference for the wall, the preference being either of energetic or entropic origin. A long-range attractive force operating between the walls across the polymer solution is associated with the CIPS. The CIPS phenomenon is discussed for two different polymer systems. The effects of the chain length asymmetry, the solution composition, and the interactions with the walls on the range and the magnitude of the attractive force are... (More)
The formation of a capillary phase in segregating mixed polymer solutions confined between two planar walls is modeled by using a lattice mean-field theory for flexible polymers in solution. A capillary-induced phase separation (CIPS) may appear in systems where the two polymer components display different preference for the wall, the preference being either of energetic or entropic origin. A long-range attractive force operating between the walls across the polymer solution is associated with the CIPS. The CIPS phenomenon is discussed for two different polymer systems. The effects of the chain length asymmetry, the solution composition, and the interactions with the walls on the range and the magnitude of the attractive force are presented. For compositions near the binodal curve and far from the critical point, the attractive force is very long-ranged and its range exceeds far the dimension of the polymer chains. Polymer distributions between the walls at the onset of the attractive force in the systems are also reported. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part B
volume
106
issue
15
pages
3827 - 3834
publisher
The American Chemical Society
external identifiers
  • wos:000175164600010
  • scopus:0037129461
ISSN
1520-5207
DOI
10.1021/jp013199q
language
English
LU publication?
yes
id
6cdd793b-8a08-473e-92f1-0ec05c5e9b63 (old id 339909)
date added to LUP
2007-10-24 16:17:26
date last changed
2017-10-01 04:46:19
@article{6cdd793b-8a08-473e-92f1-0ec05c5e9b63,
  abstract     = {The formation of a capillary phase in segregating mixed polymer solutions confined between two planar walls is modeled by using a lattice mean-field theory for flexible polymers in solution. A capillary-induced phase separation (CIPS) may appear in systems where the two polymer components display different preference for the wall, the preference being either of energetic or entropic origin. A long-range attractive force operating between the walls across the polymer solution is associated with the CIPS. The CIPS phenomenon is discussed for two different polymer systems. The effects of the chain length asymmetry, the solution composition, and the interactions with the walls on the range and the magnitude of the attractive force are presented. For compositions near the binodal curve and far from the critical point, the attractive force is very long-ranged and its range exceeds far the dimension of the polymer chains. Polymer distributions between the walls at the onset of the attractive force in the systems are also reported.},
  author       = {Joabsson, Fredrik and Linse, Per},
  issn         = {1520-5207},
  language     = {eng},
  number       = {15},
  pages        = {3827--3834},
  publisher    = {The American Chemical Society},
  series       = {The Journal of Physical Chemistry Part B},
  title        = {Capillary-induced phase separation in mixed polymer solutions. A lattice mean-field calculation study},
  url          = {http://dx.doi.org/10.1021/jp013199q},
  volume       = {106},
  year         = {2002},
}