Shear Orientation of Lyotropic Hexagonal Phases

作者: Gudrun Schmidt , Stefan Müller , Peter Lindner , Claudia Schmidt , Walter Richtering

DOI: 10.1021/JP9725745

关键词:

摘要: The shear orientation of the hexagonal liquid crystal phase nonionic surfactant/water mixtures was investigated by means different techniques, namely, microscopy, small-angle light and neutron scattering, (SALS, SANS), birefringence, nuclear magnetic resonance (NMR). On a microscopic length scale probed NMR, SANS, flow results in an alignment rodlike micelles along direction. 10 plane parallel to plane. mesoscopic scale, studied microscopy SALS, stripe texture observed. This is due undulation director which on average aligned corresponding SALS pattern shows better correlation perpendicular

参考文章(37)
H. Janeschitz-Kriegl, Flow birefringence of elastico-viscous polymer systems Springer Berlin Heidelberg. pp. 170- 318 ,(1969) , 10.1007/BFB0051073
Gerald G. Fuller, Optical Rheometry of Complex Fluids ,(1995)
Stefan Müller, Peter Fischer, Claudia Schmidt, Solid-Like Director Reorientation in Sheared Hexagonal Lyotropic Liquid Crystals as Studied by Nuclear Maginetic Resonance Journal De Physique Ii. ,vol. 7, pp. 421- 432 ,(1997) , 10.1051/JP2:1997135
Krystyna Kratzat, Heino Finkelmann, Branched non-ionic oligo-oxyethylene Y-amphiphiles Effect of molecular geometry on the micellar shape 1 Liquid Crystals. ,vol. 13, pp. 691- 699 ,(1993) , 10.1080/02678299308026341
Reinhard Linemann, J�rg L�uger, Gudrun Schmidt, Krystyna Kratzat, W. Richtering, Linear and nonlinear rheology of micellar solutions in the isotropic, cubic and hexagonal phase probed by rheo-small-angle light scattering Rheologica Acta. ,vol. 34, pp. 440- 449 ,(1995) , 10.1007/BF00396557
W. A. Hamilton, P. D. Butler, S. M. Baker, G. S. Smith, John B. Hayter, L. J. Magid, R. Pynn, SHEAR INDUCED HEXAGONAL ORDERING OBSERVED IN AN IONIC VISCOELASTIC FLUID IN FLOW PAST A SURFACE Physical Review Letters. ,vol. 72, pp. 2219- 2222 ,(1994) , 10.1103/PHYSREVLETT.72.2219
Elizabeth K. Wheeler, Pilar Izu, Gerald G. Fuller, Structure and rheology of wormlike micelles Rheologica Acta. ,vol. 35, pp. 139- 149 ,(1996) , 10.1007/BF00396041
P. Oswald, J. C. Géminard, L. Lejcek, L. Sallen, Nonlinear Analysis of Stripe Textures in Hexagonal Lyotropic Mesophases Journal De Physique Ii. ,vol. 6, pp. 281- 303 ,(1996) , 10.1051/JP2:1996182
Frank S. Bates, Kurt A. Koppi, Matthew Tirrell, Kristoffer Almdal, Kell Mortensen, Influence of Shear on the Hexagonal-to-Disorder Transition in a Diblock Copolymer Melt Macromolecules. ,vol. 27, pp. 5934- 5936 ,(1994) , 10.1021/MA00098A060