corner
corner
APS » Journals » Phys. Rev. E » Volume 73 » Issue 2
< Previous Article | Next Article >

Phys. Rev. E 73, 020504(R) (2006) [4 pages]

Spatially resolved small-angle neutron scattering in the 1-2 plane: A study of shear-induced phase-separating wormlike micelles

Download: PDF (328 kB) Buy this article Export: BibTeX or EndNote (RIS)

Matthew W. Liberatore, Florian Nettesheim, and Norman J. Wagner*
Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716, USA

Lionel Porcar
University of Maryland, College Park, Maryland 20742, USA and NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

Received 18 March 2005; published 27 February 2006

The shear-induced microstructure of a shear-induced phase separating (SIPS) wormlike micellar solution is measured by combining small-angle neutron scattering with a shear cell capable of gap-resolved measurement in the 1-2 (velocity-velocity gradient) plane. Quantitative results show evidence for shear-induced microphase separation accompanied by shear banding. The results suggest both concentration fluctuations and gradients in segmental alignment occurring during SIPS.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.73.020504
DOI:
10.1103/PhysRevE.73.020504
PACS:
83.80.Qr, 81.16.Dn, 61.12.Ex, 83.50.Ax

*Electronic address: wagner@che.udel.edu

 
< Previous Article | Next Article >