Cylinder to sphere transition in reverse microemulsions: The effect of hydrotropes

Marios Hopkins Hatzopoulos, Julian Eastoe*, Peter J. Dowding, Isabelle Grillo

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

17 Citations (Scopus)

Abstract

The effect of hydrotropes on the geometry of reverse water-in-oil AOT-microemulsions is investigated as a function of water content, and hydrotrope additive architecture. SANS reveals that hydrotropes induce cylindrical morphologies which transition to ellipsoidal and then spherical geometries with increasing water content (w). The length of the elongated particles appeared to show some dependence on the hydrotrope-AOT tail compatibility, which is also reflected in the phase behaviour of these systems. This is the first report of hydrotrope-induced axial elongation of water microemulsions in the oil phase. (c) 2012 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)304-310
Number of pages7
JournalJournal of Colloid and Interface Science
Volume392
DOIs
Publication statusPublished - 15 Feb 2013

Keywords

  • Hydrotropes
  • Microemulsions
  • Small-angle neutron scattering
  • Cylindrical micelles
  • AEROSOL-OT
  • MICELLES
  • SURFACTANTS
  • SCATTERING
  • STABILITY
  • PHENYL

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