Polysulfone ionomers for proton-conducting fuel cell membranes: sulfoalkylated polysulfones
Karlsson, Lina LU and Jannasch, Patric LU
(2004)
In Journal of Membrane Science
230(1-2).
p.61-70
- Abstract
- Polysulfones (PSUs) carrying short pendant alkyl side-chains with terminal sulfonic acid units have been prepared and studied as proton-conducting membrane materials. The first step in the preparation involved quenching of lithiated PSU with SO2 gas, resulting in sulfinated PSU. In the second step, the lithium sulfinate units on the polymer were reacted with sodium 2-bromoethanesulfonate, sodium 3-bromopropanesulfonate, or 1,4-butane sultone to produce sulfoethylated, sulfopropylated, or sulfobutylated PSUs, respectively. Analysis by thermogravimetry showed that membranes based on the sulfoalkylated polymers were stable up to approximately 300degreesC under N-2 atmosphere. Calorimetry measurements revealed that the modified polymers... (More)
- Polysulfones (PSUs) carrying short pendant alkyl side-chains with terminal sulfonic acid units have been prepared and studied as proton-conducting membrane materials. The first step in the preparation involved quenching of lithiated PSU with SO2 gas, resulting in sulfinated PSU. In the second step, the lithium sulfinate units on the polymer were reacted with sodium 2-bromoethanesulfonate, sodium 3-bromopropanesulfonate, or 1,4-butane sultone to produce sulfoethylated, sulfopropylated, or sulfobutylated PSUs, respectively. Analysis by thermogravimetry showed that membranes based on the sulfoalkylated polymers were stable up to approximately 300degreesC under N-2 atmosphere. Calorimetry measurements revealed that the modified polymers absorbed large amounts of non-freezing water, corresponding to 11-14 mol H2O/mol SO3H under immersed conditions. The proton conductivity of a membrane based on a PSU carrying 0.9 sulfopropyl chains per repeating unit was measured to be 77 mS/cm at 70degreesC under humidifying conditions. (C) 2003 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/139549
- author
- Karlsson, Lina
LU
and Jannasch, Patric
LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Ion exchange membrane, Polysulfone, Water absorption, Sulfonation, Proton conducting electrolyte
- in
- Journal of Membrane Science
- volume
- 230
- issue
- 1-2
- pages
- 61 - 70
- publisher
- Elsevier
- external identifiers
-
- wos:000189087000007
- scopus:0942268596
- ISSN
- 0376-7388
- DOI
- 10.1016/j.memsci.2003.10.033
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041), Department of Chemistry (011001220)
- id
- 154a7344-6092-4bc9-b07f-521c8c66072e (old id 139549)
- date added to LUP
- 2016-04-01 16:43:20
- date last changed
- 2022-03-22 20:36:12
@article{154a7344-6092-4bc9-b07f-521c8c66072e,
abstract = {{Polysulfones (PSUs) carrying short pendant alkyl side-chains with terminal sulfonic acid units have been prepared and studied as proton-conducting membrane materials. The first step in the preparation involved quenching of lithiated PSU with SO2 gas, resulting in sulfinated PSU. In the second step, the lithium sulfinate units on the polymer were reacted with sodium 2-bromoethanesulfonate, sodium 3-bromopropanesulfonate, or 1,4-butane sultone to produce sulfoethylated, sulfopropylated, or sulfobutylated PSUs, respectively. Analysis by thermogravimetry showed that membranes based on the sulfoalkylated polymers were stable up to approximately 300degreesC under N-2 atmosphere. Calorimetry measurements revealed that the modified polymers absorbed large amounts of non-freezing water, corresponding to 11-14 mol H2O/mol SO3H under immersed conditions. The proton conductivity of a membrane based on a PSU carrying 0.9 sulfopropyl chains per repeating unit was measured to be 77 mS/cm at 70degreesC under humidifying conditions. (C) 2003 Elsevier B.V. All rights reserved.}},
author = {{Karlsson, Lina and Jannasch, Patric}},
issn = {{0376-7388}},
keywords = {{Ion exchange membrane; Polysulfone; Water absorption; Sulfonation; Proton conducting electrolyte}},
language = {{eng}},
number = {{1-2}},
pages = {{61--70}},
publisher = {{Elsevier}},
series = {{Journal of Membrane Science}},
title = {{Polysulfone ionomers for proton-conducting fuel cell membranes: sulfoalkylated polysulfones}},
url = {{http://dx.doi.org/10.1016/j.memsci.2003.10.033}},
doi = {{10.1016/j.memsci.2003.10.033}},
volume = {{230}},
year = {{2004}},
}