Publication Title

Physical Review E

Publication Date

6-15-1995

Document Type

Article

DOI

10.1103/PhysRevE.51.6282

Keywords

Angle Neutron Scattering, Phase Transitions, Surfactant, Flow

Disciplines

Physics

Abstract

Small angle neutron scattering was used to investigate the orientational ordering of a lyotropic mixture of cesium-perAuoro-octanoate (CsPFO) in water under simple Couette and oscillatory shear. The discotic-hquid-crytstal micelles were found to orient mostly parallel to the moving shear cell walls (i.e., vertically). A partial "Gipping" of the orientation was observed in the smectic phase, whereby lamellae were seen to orient horizontally. Oscillatory shear produced orientational e6'ects as well as shearinduced shifts of the phase transition boundaries. Interesting competing "bulk" and "wall" efFects were also observed.

Comments

Copyright 1995 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.51.6282.


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