Two-phase shear band structures at uniform stress

被引:182
作者
Britton, MM
Callaghan, PT
机构
[1] Department of Physics, Massey University, Palmerston North
关键词
D O I
10.1103/PhysRevLett.78.4930
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Using NMR microscopy we measure the velocity distribution for a wormlike surfactant solution in the gap of a small angle cone-and-plate rheometer, This system, cetylpyridinium chloride/sodium salicylate 100 mM/60 mM, exhibits biphasic shear band structure when the applied shear rate exceeds the critical rate of strain beyond which a plateau is observed in the shear stress. The structure is characterized by two low/high shear interfaces and the region of high shear evolves by increasing width as the average gap shear is increased.
引用
收藏
页码:4930 / 4933
页数:4
相关论文
共 15 条
  • [1] Callaghan P.T., 1991, Principles of nuclear magnetic resonance microscopy, V1st
  • [2] A study of the ''spurt effect'' in wormlike micelles using nuclear magnetic resonance microscopy
    Callaghan, PT
    Cates, ME
    Rofe, CJ
    Smeulders, JBAF
    [J]. JOURNAL DE PHYSIQUE II, 1996, 6 (03): : 375 - 393
  • [3] STATICS AND DYNAMICS OF WORM-LIKE SURFACTANT MICELLES
    CATES, ME
    CANDAU, SJ
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (33) : 6869 - 6892
  • [4] THE RHEOLOGY OF ENTANGLED POLYMERS AT VERY HIGH SHEAR RATES
    CATES, ME
    MCLEISH, TCB
    MARRUCCI, G
    [J]. EUROPHYSICS LETTERS, 1993, 21 (04): : 451 - 456
  • [5] NONLINEAR VISCOELASTICITY OF WORMLIKE MICELLES (AND OTHER REVERSIBLY BREAKABLE POLYMERS)
    CATES, ME
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (01) : 371 - 375
  • [6] Doi M., 1987, THEORY POLYM DYNAMIC
  • [7] ESPANOL P, 1996, FLUID MECH, V65, P93
  • [8] GRECO F, IN PRESS J NONNEWTON
  • [9] Observation of shear banding in worm-like micelles by NMR velocity imaging
    Mair, RW
    Callaghan, PT
    [J]. EUROPHYSICS LETTERS, 1996, 36 (09): : 719 - 724
  • [10] RHEOOPTICAL STUDY OF WORM-LIKE MICELLES UNDERGOING A SHEAR BANDING FLOW
    MAKHLOUFI, R
    DECRUPPE, JP
    AITALI, A
    CRESSELY, R
    [J]. EUROPHYSICS LETTERS, 1995, 32 (03): : 253 - 258