1 Risø National Laboratory for Sustainable Energy, Technical University of Denmark2 unknown3 Department of Chemical and Biochemical Engineering, Technical University of Denmark
Surfactant lamellar phases are often complicated by the formation of multilamellar (onions) under shear, which can originate simply by shaking the sample. A systematic study has been performed on the C10E3-D2O system in which different bilayer structures under a steady shear flow were investigated by small-angle neutron scattering (SANS). In the present model-system, multilamellar vesicles exist at lower temperatures and planar bilayers (classical lamellar) exist at higher temperatures. Our study focuses on the role of the saddle-splay modulus of the bilayer, <(kappa)over bar>(b), in the transformation from onion to plane to multiply connected bilayer structure as a function of temperature. (C) 2000 Elsevier Science B.V. All rights reserved.
Physica B: Condensed Matter, 2000, Vol 276-278, p. 379-380