Studies of difurylmethane-maleic anhydride copolymer as an ion-responsive membrane for the determination of mono-, di- and tri-valent cations

Sophie Robin, Yves Gnanou

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The synthesis of the difurylmethane-maleicanhydride(DFM-MAH) copolymer was done by reacting difurylmethane with maleic acid followed by hydrolysis with sodium hydroxide to produce the anhydride sodium salt. Construction of a sensor with the copolymer as the ion-exchanger material was done by mixing the copolymer with poly(vinylchloride), PVC, plastic matrix and dibutylphthalate (DBP) plasticizer in tetrahydrofuran (THF) solvent to form a paste. The paste was coated on a piece of silver wire to produce a coated wire electrode (CWE). The response characteristics of the copolymer-CWE, in potentiometric analysis, were studied for mono-, di- and tri-valent cations. All the cations studied showed a near-Nernstian response for concentrations ranging from 5 x 10-8 M to 1 x 100M in triethanolamine buffer in aqueous media (0.5 M, pH 10.5). The membrane had a composition of 20:20:60 for the copolymer, PVC and DBP.

Original languageEnglish (US)
Pages (from-to)73-82
Number of pages10
JournalMacromolecular Symposia
StatePublished - Jan 1 2001

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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