Absence of Schroeder's Paradox in a Nanostructured Block Copolymer Electrolyte Membrane
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4609119
- author
- Beers, Keith M. ; Yakovlev, Sergey ; Jackson, Andrew LU ; Wang, Xin ; Hexemer, Alexander ; Downing, Kenneth H. and Balsara, Nitash P.
- organization
- publishing date
- 2014
- 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 (ACS)
- external identifiers
-
- wos:000337784100046
- scopus:84902965494
- pmid:24842682
- 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
- 2016-04-01 13:48:55
- date last changed
- 2022-02-19 07:35:34
@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 (ACS)}}, 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}}, doi = {{10.1021/jp501374r}}, volume = {{118}}, year = {{2014}}, }