Percolation and critical exponents for the viscosity of microemulsions
1990; American Physical Society; Volume: 42; Issue: 2 Linguagem: Inglês
10.1103/physreva.42.872
ISSN1538-4446
AutoresZ. Saïdi, C.T. Mathew, J. Peyrelasse, Christian Boned,
Tópico(s)Material Dynamics and Properties
ResumoThe study of the viscosity of waterless microemulsions glycerol-AOT-isooctane [where AOT represents sodium bis(2-ethylhexyl) sulfosuccinate] shows that there is a quantitative agreement between experimental values and percolation theory. The values of the scaling exponents \ensuremath{\mu}'=2.00\ifmmode\pm\else\textpm\fi{}0.25 and s'=1.20\ifmmode\pm\else\textpm\fi{}0.20 for viscosity are very close of those of conductivity obtained for dynamical percolation with water-AOT-oil systems. The water-AOT-oil and glycerol-AOT-oil microemulsions behave in a broadly similar way as regards dynamic percolation provided that the conditions of application of the percolation laws are satisfied.
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