Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2006-05-18
Physics
Condensed Matter
Soft Condensed Matter
10 pages, 10 figures
Scientific paper
10.1140/epje/i2006-10053-9
We report on the rheology of a lamellar lyotropic surfactant solution (SDS/dodecane/pentanol/water), and identify a discontinuous transition between two shear thinning regimes which correspond to the low stress lamellar phase and the more viscous shear induced multi-lamellar vesicle, or ``onion'' phase. We study in detail the flow curve, stress as a function of shear rate, during the transition region, and present evidence that the region consists of a shear banded phase where the material has macroscopically separated into bands of lamellae and onions stacked in the vorticity direction. We infer very slow and irregular transformations from lamellae to onions as the stress is increased through the two phase region, and identify distinct events consistent with the nucleation of small fractions of onions that coexist with sheared lamellae.
Olmsted Peter D.
Wilkins Georgina M. H.
No associations
LandOfFree
Vorticity Banding During the Lamellar-to-Onion Transition in a Lyotropic Surfactant Solution in Shear Flow does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Vorticity Banding During the Lamellar-to-Onion Transition in a Lyotropic Surfactant Solution in Shear Flow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vorticity Banding During the Lamellar-to-Onion Transition in a Lyotropic Surfactant Solution in Shear Flow will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-678177