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 language | English (US) |
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Pages (from-to) | 3419-3426 |
Number of pages | 8 |
Journal | Langmuir |
Volume | 10 |
Issue number | 10 |
DOIs | |
State | Published - Oct 1 1994 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Spectroscopy
- Electrochemistry