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Fuel cell membrane materials by chemical grafting of aromatic main-chain polymers

Jannasch, Patric LU (2005) In Fuel Cells 5(2). p.248-260
Abstract
An extensive world-wide pursuit for new efficient fuel cell membranes materials is currently motivating research on proton-conducting ionomers based on durable aromatic main-chain polymers. In this context, most ionomers. have been prepared either by direct sulfonation of polymers, using for example. fuming. sulfuric-acid, or by direct polymerizations using different sulfonated monomers, Far less exploited are chemical grafting reactions carried out to introduce sulfonic acid units, or alternative acidic units, directly on the polymer main-chain, or on side-chains to the polymer main-chain. This versatile method offers very interesting possibilities, not only to control the degree and the site of sulfonation, but also when it comes to... (More)
An extensive world-wide pursuit for new efficient fuel cell membranes materials is currently motivating research on proton-conducting ionomers based on durable aromatic main-chain polymers. In this context, most ionomers. have been prepared either by direct sulfonation of polymers, using for example. fuming. sulfuric-acid, or by direct polymerizations using different sulfonated monomers, Far less exploited are chemical grafting reactions carried out to introduce sulfonic acid units, or alternative acidic units, directly on the polymer main-chain, or on side-chains to the polymer main-chain. This versatile method offers very interesting possibilities, not only to control the degree and the site of sulfonation, but also when it comes to manipulating the molecular mobility of the sulfonic acid units and their distance from the polymer main-chain. The length and nature of the grafted units have shown to have a large influence on for example the water-uptake characteristics and conductivity of,ionomer membranes, especially at temperatures above 100 degrees C. Grafting can also be used to introduce other useful functions to the polymers, or to crosslink membranes. This paper reviews various grafting reactions carried out on aromatic main-chain polymers, especially polybenzimidazoles and polysulfones, to prepare membrane materials, as well as the characteristics of these materials regarding their use in fuel cells. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Fuel Cells
volume
5
issue
2
pages
248 - 260
publisher
John Wiley & Sons
external identifiers
  • wos:000232198800007
  • scopus:18544382703
ISSN
1615-6854
DOI
10.1002/fuce.200400051
language
English
LU publication?
yes
id
c3773a0a-7423-491b-9401-ed8164f4aa5f (old id 153080)
date added to LUP
2007-07-13 12:13:31
date last changed
2017-09-24 03:42:39
@article{c3773a0a-7423-491b-9401-ed8164f4aa5f,
  abstract     = {An extensive world-wide pursuit for new efficient fuel cell membranes materials is currently motivating research on proton-conducting ionomers based on durable aromatic main-chain polymers. In this context, most ionomers. have been prepared either by direct sulfonation of polymers, using for example. fuming. sulfuric-acid, or by direct polymerizations using different sulfonated monomers, Far less exploited are chemical grafting reactions carried out to introduce sulfonic acid units, or alternative acidic units, directly on the polymer main-chain, or on side-chains to the polymer main-chain. This versatile method offers very interesting possibilities, not only to control the degree and the site of sulfonation, but also when it comes to manipulating the molecular mobility of the sulfonic acid units and their distance from the polymer main-chain. The length and nature of the grafted units have shown to have a large influence on for example the water-uptake characteristics and conductivity of,ionomer membranes, especially at temperatures above 100 degrees C. Grafting can also be used to introduce other useful functions to the polymers, or to crosslink membranes. This paper reviews various grafting reactions carried out on aromatic main-chain polymers, especially polybenzimidazoles and polysulfones, to prepare membrane materials, as well as the characteristics of these materials regarding their use in fuel cells.},
  author       = {Jannasch, Patric},
  issn         = {1615-6854},
  language     = {eng},
  number       = {2},
  pages        = {248--260},
  publisher    = {John Wiley & Sons},
  series       = {Fuel Cells},
  title        = {Fuel cell membrane materials by chemical grafting of aromatic main-chain polymers},
  url          = {http://dx.doi.org/10.1002/fuce.200400051},
  volume       = {5},
  year         = {2005},
}