Fast relaxation of a hexagonal Poiseuille shear-induced near-surface phase in a threadlike micellar solution
Journal Article
·
· Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States)
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996 (United States)
The dynamics of near-surface conformations in complex fluids under flow should dramatically affect their rheological properties. We have made the first measurements resolving the decay kinetics of a hexagonal phase induced in a threadlike polyionic micellar system under Poiseuille shear near a quartz surface. Upon cessation of shearing flow, this minimum interference crystalline phase formed within {approximately}20 {mu}m of the surface {open_quotes}melts{close_quotes} to a metastable two-dimensional liquid of aligned micelles in {approximately}0.7 s. This is some three orders of magnitude shorter than the time required for bulk (Couette) shear-aligned micelles in this system to reach a fully entangled state. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 357286
- Journal Information:
- Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics Journal Issue: 2 Vol. 60; ISSN PLEEE8; ISSN 1063-651X
- Country of Publication:
- United States
- Language:
- English
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