ISSN:
1572-9567
Keywords:
critical dynamics
;
micellar solution
;
shear effects
;
spinodal decomposition
;
viscosity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have investigated the dynamic behavior of a nonionic micellar solution of tetra-ethylene glycoln-decylether (C10 E4) in water near its critical point in the presence of shear. The non-Newtonian behavior of the viscosityν can be represented byν ν* = [ 1 +a(Sτ4)=]ω2, whereν* is the viscosity in the absence of shear,S is the shear rate. τ4 is the lifetime of the critical Iluctuations,a is a system-dependent constant, and ω = 0.02 In addition, we have found that, before attaining a steady state, the sheared mixture undergoing phase separation shows significant shear-dependent rheological effects due to the presence of concentration domains.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01441901
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