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Phosphonation of polysulfones via lithiation and reaction with chlorophosphonic acid esters

Lafitte, Benoit LU and Jannasch, Patric LU (2005) In Journal of Polymer Science. Part A, Polymer Chemistry 43(2). p.273-286
Abstract
A noncatalytic route for the phosphonation of polysulfones was established in which lithiated sites on polysulfones were reacted with an excess of chlorophosphonic acid esters through an SNP(V) mechanism. Both the bisphenol A and biphenyl sulfone segments of the polysulfone main chain were modified according to whether brominated polysulfone or pristine polysulfone was used. Up to 50% of the repeating units of the polysulfones were modified by a careful selection of reaction parameters to avoid crosslinking. The phosphonated polysulfones in their acid form showed high thermal stability with decomposition temperatures of approximately 350 C under nitrogen. Polysulfones with phosphonated bisphenol A segments showed good membrane-forming... (More)
A noncatalytic route for the phosphonation of polysulfones was established in which lithiated sites on polysulfones were reacted with an excess of chlorophosphonic acid esters through an SNP(V) mechanism. Both the bisphenol A and biphenyl sulfone segments of the polysulfone main chain were modified according to whether brominated polysulfone or pristine polysulfone was used. Up to 50% of the repeating units of the polysulfones were modified by a careful selection of reaction parameters to avoid crosslinking. The phosphonated polysulfones in their acid form showed high thermal stability with decomposition temperatures of approximately 350 C under nitrogen. Polysulfones with phosphonated bisphenol A segments showed good membrane-forming properties and are candidates for components in ionomer composite membranes for fuel cells. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Polymer Science. Part A, Polymer Chemistry
volume
43
issue
2
pages
273 - 286
publisher
John Wiley & Sons
external identifiers
  • wos:000225953600003
  • scopus:12344279432
ISSN
0887-624X
DOI
10.1002/pola.20487
language
English
LU publication?
yes
id
668a9bf6-9061-4623-bd8c-f7dc9a1616c4 (old id 153041)
date added to LUP
2007-07-13 13:44:16
date last changed
2017-09-10 04:37:56
@article{668a9bf6-9061-4623-bd8c-f7dc9a1616c4,
  abstract     = {A noncatalytic route for the phosphonation of polysulfones was established in which lithiated sites on polysulfones were reacted with an excess of chlorophosphonic acid esters through an SNP(V) mechanism. Both the bisphenol A and biphenyl sulfone segments of the polysulfone main chain were modified according to whether brominated polysulfone or pristine polysulfone was used. Up to 50% of the repeating units of the polysulfones were modified by a careful selection of reaction parameters to avoid crosslinking. The phosphonated polysulfones in their acid form showed high thermal stability with decomposition temperatures of approximately 350 C under nitrogen. Polysulfones with phosphonated bisphenol A segments showed good membrane-forming properties and are candidates for components in ionomer composite membranes for fuel cells.},
  author       = {Lafitte, Benoit and Jannasch, Patric},
  issn         = {0887-624X},
  language     = {eng},
  number       = {2},
  pages        = {273--286},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Polymer Science. Part A, Polymer Chemistry},
  title        = {Phosphonation of polysulfones via lithiation and reaction with chlorophosphonic acid esters},
  url          = {http://dx.doi.org/10.1002/pola.20487},
  volume       = {43},
  year         = {2005},
}