Elongational Flow of Solutions of Rodlike Micelles

Robert Krafft Prud'homme, Gregory G. Warr

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Solutions of wormlike tetradecyltrimethylammonium salicylate (TTASal) micelles in the presence of electrolyte are examined in a uniaxial elongational flow field. We show that, in contrast with their shear thinning behavior, these solutions elongationally thicken in a similar manner to polymer solutions. The dynamic nature of these micelles affects their flow behavior, causing micelle growth in the elongational field up to a critical rate of strain, above which a reversible thinning occurs. Flow visualization experiments also indicate the formation of a nematic phase under elongation, and this is discussed in terms of current models for micelle dynamics in external fields.

Original languageEnglish (US)
Pages (from-to)3419-3426
Number of pages8
JournalLangmuir
Volume10
Issue number10
DOIs
StatePublished - Oct 1 1994

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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