1989
DOI: 10.1002/bbpc.19890930216
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The electric birefringence anomaly in colloidal and micellar systems

Abstract: Rod‐like micelles of perfluorosurfactants in aqueous solution were examined by using the transient and dynamic electric birefringence method. Tetraethylammoniumperfluoroctanesulfonat shows in the overlap region of the rods between 5 mM and 15 mM up to three different relaxation times τ1, τ2 and τ3 between a few μs and several ms. A forth very long relaxation time τ4 (seconds) appears at higher concentrations. The relaxation processes with the time constants τ1, τ3 and τ4 have a negative birefringence, while τ2… Show more

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Cited by 20 publications
(14 citation statements)
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“…In the dilute region, only one relaxation time was observed. Surprisingly, a second effect with opposite sign appeared at the concentration at which the viscosity of the solution was still small and began to increase from the value of the water viscosity [7]. No sensible explanation could be offered for the effect.…”
Section: Introductionmentioning
confidence: 82%
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“…In the dilute region, only one relaxation time was observed. Surprisingly, a second effect with opposite sign appeared at the concentration at which the viscosity of the solution was still small and began to increase from the value of the water viscosity [7]. No sensible explanation could be offered for the effect.…”
Section: Introductionmentioning
confidence: 82%
“…The group of the author of this article observed the electric birefringence anomaly in 1985 in studies of viscoelastic micellar solutions which are formed from entangled wormlike micelles [7]. The anomaly effect had already been observed before on other colloidal systems.…”
Section: Introductionmentioning
confidence: 88%
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