Sulfonated polybenzimidazole membranes – preparation and physico-chemical characterization (Articolo in rivista)

Type
Label
  • Sulfonated polybenzimidazole membranes – preparation and physico-chemical characterization (Articolo in rivista) (literal)
Anno
  • 2001-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/S0376-7388(01)00359-3 (literal)
Alternative label
  • Staiti P., Lufrano F., Aricò A.S., Passalacqua E. and Antonucci V. (2001)
    Sulfonated polybenzimidazole membranes – preparation and physico-chemical characterization
    in Journal of membrane science (Print); Elsevier, Amsterdam (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Staiti P., Lufrano F., Aricò A.S., Passalacqua E. and Antonucci V. (literal)
Pagina inizio
  • 71 (literal)
Pagina fine
  • 78 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 188 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-ITAE, Istituto di Tecnologie Avanzate per l'Energia \"Nicola Giordano\", Messina (literal)
Titolo
  • Sulfonated polybenzimidazole membranes – preparation and physico-chemical characterization (literal)
Abstract
  • The preparation of sulfonated polybenzimidazole by sulfuric acid treatment on pre-formed polybenzimidazole membranes was investigated. This polymer, which is originally a thermal resistant and insulating material is transformed by the chemical treatment into a proton conductor. The modified material is stable at temperatures close to 400 degreesC. The proton conductivity of the sulfonated membrane at 160 degreesC and 100% r.h. is 7.5 x 10(-5) S/cm. The low conductivity is explained by protonation of nitrogen in the imidazolium ring, as evidenced by FT-IR analysis, which lowers the proton mobility. Hydrogen bridge bonds are formed between nitrogen in the imidazole and oxygen of sulfonic group creating a more regular structure in the material which becomes insoluble in polar solvent such as dimethyl sulfoxide. These modifications of the material have been observed in the: X-ray diffraction patterns, which evidence an incipient crystalline structure of the sulfonated polybenzimidazole. (literal)
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