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Sodium sulfonate‐functionalized poly(ether ether ketone)s
Author(s) -
Wang Feng,
Chen Tianlu,
Xu Jiping
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19980701)199:7<1421::aid-macp1421>3.0.co;2-p
Subject(s) - sulfonate , chemistry , ether , polymer chemistry , monomer , condensation polymer , glass transition , thermal stability , nucleophilic substitution , sodium , ketone , differential scanning calorimetry , bisphenol , solubility , organic chemistry , polymer , physics , epoxy , thermodynamics
A new monomer, sodium 5,5′‐carbonylbis(2‐fluorobenzenesulfonate) ( 1 ), was synthesized by sulfonation of 4,4′‐difluorobenzophenone ( 2 ) with fuming sulfuric acid. Poly(ether ether ketone)s containing sodium sulfonate groups were synthesized directly via aromatic nucleophilic substitution from the sodium sulfonate‐functionalized monomer 1 and Bisphenol A ( 3 ) in the presence of potassium carbonate in dimethyl sulfoxide. The polycondensation proceeds without any side reactions. The differential scanning calorimetry measurement indicated that the polymers are amorphous and the glass transition temperatures increase with the content of sodium sulfonate groups in the polymer chain. The degree of substitution with sodium sulfonate groups has strong influence on their thermal stability and solubility.