Equilibrium sorption of C.I.Basic Red 18 by carboxymethyl cellulose membranes

J. Borsa, S. Pak, T. Iijima

Research output: Contribution to journalArticle

4 Citations (Scopus)


The equilibrium sorption of a cationic dye, C.I.Basic Red 18, by a partially carboxymethylated cellulose membrane at pH 4.2 was investigated. The sorption isotherm was interpreted by considering a cooperative mode of binding of the dye by the polymer. The intrinsic binding constant K, the number of consecutive polymer residues occupied by a single dye molecule n, and the cooperativity parameter Ω were determined. In the case of the polymer with high content of carboxylate groups an additional mode of dye binding was presumed.

Original languageEnglish
Pages (from-to)842-846
Number of pages5
JournalColloid & Polymer Science
Issue number10
Publication statusPublished - Oct 1 1985


  • Equilibrium sorption
  • carboxymethyl cellulose
  • cationic dye
  • cooperative sorption
  • dual sorption

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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