Selective ion transport across monomeric or reversed micellar liquid membrane containing an open-chain polyether surfactant

Manabu Igawa, Emiko Kobayashi, Akiyuki Itakura, Kei Kikuchi, Hiroshi Okochi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The transport phenomena of salts across a liquid membrane containing a nonionic surfactant, polyoxyethylene p-nonylphenyl ether, as a carrier were investigated. The surfactant, complexing with metal cations selectively, functions as a monomeric carrier or a reversed micellar carrier of a self-assembly system depending on the concentrations of the carrier and the source phase salt. The fluxes of the hydrophobic salts were large in general, and potassium ion was selectively transported by the carrier containing 20 ethylene oxide units. The mole ratio of the salt to the carrier in the complex was 1 in the forms of both monomer and reversed micelle. The transport equation was derived from the complex formation, and its destruction rates and the diffusion resistance were found to be functions of the activities of the source phase salt and the carrier. The theoretical values agreed very well with the measured values. Both the reaction rate constant and the diffusion coefficient decreased significantly with the change of the carrier form from the monomer to the reversed micelle. Therefore, the increase of the flux with the increase of the concentrations of the source phase salt and the carrier was suppressed by the formation of the reversed micelle.

Original languageEnglish
Pages (from-to)12447-12451
Number of pages5
JournalJournal of Physical Chemistry
Volume98
Issue number47
Publication statusPublished - 1994
Externally publishedYes

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Liquid membranes
Polyethers
Surface-Active Agents
Surface active agents
Salts
surfactants
Ions
membranes
Micelles
liquids
salts
ions
micelles
Monomers
Fluxes
Ethylene Oxide
Nonionic surfactants
monomers
Ether
Self assembly

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Selective ion transport across monomeric or reversed micellar liquid membrane containing an open-chain polyether surfactant. / Igawa, Manabu; Kobayashi, Emiko; Itakura, Akiyuki; Kikuchi, Kei; Okochi, Hiroshi.

In: Journal of Physical Chemistry, Vol. 98, No. 47, 1994, p. 12447-12451.

Research output: Contribution to journalArticle

Igawa, Manabu ; Kobayashi, Emiko ; Itakura, Akiyuki ; Kikuchi, Kei ; Okochi, Hiroshi. / Selective ion transport across monomeric or reversed micellar liquid membrane containing an open-chain polyether surfactant. In: Journal of Physical Chemistry. 1994 ; Vol. 98, No. 47. pp. 12447-12451.
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