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Novel Polymer Electrolyte Membrane, Based on Pyridine Containing Poly(ether sulfone), for Application in High‐Temperature Fuel Cells
Author(s) -
Pefkianakis Elefterios K.,
Deimede Valadoula,
Daletou Maria K.,
Gourdoupi Nora,
Kallitsis Joannis K.
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500540
Subject(s) - sulfone , copolymer , polymer chemistry , materials science , ether , glass transition , condensation polymer , arylene , polymer , thermal stability , monomer , membrane , biphenyl , ionic conductivity , sulfonic acid , aryl , electrolyte , chemistry , organic chemistry , composite material , biochemistry , alkyl , electrode
Summary: Novel poly(aryl ether sulfone) copolymers containing 2,5‐biphenylpyridine and tetramethyl biphenyl moieties were synthesized by polycondensation of 4‐fluorophenyl sulfone with 2,5‐(4′,4″ dihydroxy biphenyl)pyridine and tetramethyl biphenyl diol. Copolymers with different molecular weights and different monomer compositions were obtained. These copolymers exhibit excellent film‐forming properties, mechanical integrity, and high modulus up to 250 °C, high glass transition temperatures (above 280 °C) as well as high thermal stability up to 400 °C. In addition to the above properties required for PEMFC application, this novel material shows high oxidative stability and acid doping ability, enabling proton conductivity in the range of 10 −2 S · cm −1 above 130 °C.Synthesis of copolymers with high acid uptake and ionic conductivity.