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Ultrafiltration behavior of a new type of non-ionic surfactant around the CMC

Authors
Journal
Journal of Membrane Science
0376-7388
Publisher
Elsevier
Publication Date
Volume
208
Identifiers
DOI: 10.1016/s0376-7388(02)00304-6
Keywords
  • Ultrafiltration
  • Concentration Polarization
  • Surfactant
  • Pre-Micelle

Abstract

Abstract The ultrafiltration (UF) behavior of a surfactant with drag reducing properties was investigated. The UF membrane used was a hydrophilic YM-1 (cut-off 1000) polysaccharide (Amicon). The surfactant used was a non-ionic type N-lauryl- N, N-dimethylaminoxide (LDAO). The total permeation fluxes decreased drastically in the special concentration range just below the CMC. The phenomenon was observed even when the applied pressure was changed. It was concluded that the pre-micelles formed dynamically in this concentration range.

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