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Proton‐conductive membranes of sulfonated polyphenylsulfone
Author(s) -
Dyck A.,
Fritsch D.,
Nunes S. P.
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.11264
Subject(s) - membrane , proton , polymer chemistry , homogeneous , materials science , electrical conductor , conductance , chemical engineering , chemistry , thermodynamics , physics , composite material , nuclear physics , biochemistry , engineering , condensed matter physics
Polyphenylsulfone was sulfonated by two different methods: reaction with SO 3 and reaction with (CH 3 ) 3 SiSO 3 Cl. The products were characterized, and the advantages of both methods are discussed. Much more homogeneous products were obtained from the reaction with (CH 3 ) 3 SiSO 3 Cl, along with better control of the sulfonation degree. An alternative method of membrane preparation led to an asymmetric structure, which allowed the combination of high mechanical stability and high proton conductance. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2820–2827, 2002