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Absence of Schroeder's Paradox in a Nanostructured Block Copolymer Electrolyte Membrane

Beers, Keith M.; Yakovlev, Sergey; Jackson, Andrew LU ; Wang, Xin; Hexemer, Alexander; Downing, Kenneth H. and Balsara, Nitash P. (2014) In The Journal of Physical Chemistry Part B 118(24). p.6785-6791
Abstract
This is a study of morphology, water uptake, and proton conductivity of a sulfonated polystyrene-block-polyethylene (PSS-PE) copolymer equilibrated in humid air with controlled relative humidity (RH), and in liquid water. Extrapolation of the domain size, water uptake, and conductivity obtained in humid air to RH = 100% allowed for an accurate comparison between the properties of PSS-PE hydrated in saturated vapor and in liquid water. We demonstrate that extrapolations of domain size and water uptake on samples equilibrated in humid air are consistent with measurements on samples equilibrated in liquid water. Small (5%) differences in proton conductivity were found in samples equilibrated in humid air and liquid water. We argue that... (More)
This is a study of morphology, water uptake, and proton conductivity of a sulfonated polystyrene-block-polyethylene (PSS-PE) copolymer equilibrated in humid air with controlled relative humidity (RH), and in liquid water. Extrapolation of the domain size, water uptake, and conductivity obtained in humid air to RH = 100% allowed for an accurate comparison between the properties of PSS-PE hydrated in saturated vapor and in liquid water. We demonstrate that extrapolations of domain size and water uptake on samples equilibrated in humid air are consistent with measurements on samples equilibrated in liquid water. Small (5%) differences in proton conductivity were found in samples equilibrated in humid air and liquid water. We argue that differences in transport coefficients in disordered heterogeneous systems, particularly small differences, present no paradox whatsoever. Schroeder's Paradox, wherein properties of polymers measured in saturated water vapor are different from those obtained in liquid water, is thus not observed in the PSS-PE sample. (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
118
issue
24
pages
6785 - 6791
publisher
The American Chemical Society
external identifiers
  • wos:000337784100046
  • scopus:84902965494
ISSN
1520-5207
DOI
10.1021/jp501374r
language
English
LU publication?
yes
id
4f67d09c-b3db-4d1b-aaef-1734610f49be (old id 4609119)
date added to LUP
2014-08-28 15:50:25
date last changed
2017-01-15 03:53:05
@article{4f67d09c-b3db-4d1b-aaef-1734610f49be,
  abstract     = {This is a study of morphology, water uptake, and proton conductivity of a sulfonated polystyrene-block-polyethylene (PSS-PE) copolymer equilibrated in humid air with controlled relative humidity (RH), and in liquid water. Extrapolation of the domain size, water uptake, and conductivity obtained in humid air to RH = 100% allowed for an accurate comparison between the properties of PSS-PE hydrated in saturated vapor and in liquid water. We demonstrate that extrapolations of domain size and water uptake on samples equilibrated in humid air are consistent with measurements on samples equilibrated in liquid water. Small (5%) differences in proton conductivity were found in samples equilibrated in humid air and liquid water. We argue that differences in transport coefficients in disordered heterogeneous systems, particularly small differences, present no paradox whatsoever. Schroeder's Paradox, wherein properties of polymers measured in saturated water vapor are different from those obtained in liquid water, is thus not observed in the PSS-PE sample.},
  author       = {Beers, Keith M. and Yakovlev, Sergey and Jackson, Andrew and Wang, Xin and Hexemer, Alexander and Downing, Kenneth H. and Balsara, Nitash P.},
  issn         = {1520-5207},
  language     = {eng},
  number       = {24},
  pages        = {6785--6791},
  publisher    = {The American Chemical Society},
  series       = {The Journal of Physical Chemistry Part B},
  title        = {Absence of Schroeder's Paradox in a Nanostructured Block Copolymer Electrolyte Membrane},
  url          = {http://dx.doi.org/10.1021/jp501374r},
  volume       = {118},
  year         = {2014},
}