The structure and rheology of mixed micellar solutions of sodium dodecyl sulfate and dodecyldimethylamine oxide

E. A. Safonova, M. V. Alekseeva, S. K. Filippov, T. Durrschmidt, L. V. Mokrushina, H. Hoffmann, N. A. Smirnova

Research outputpeer-review

2 Citations (Scopus)

Abstract

The paper presents the results of viscosity measurements by capillary and rotational viscometry for aqueous solutions of sodium dodecyl sulfate and dodecyldimethylamine oxide and data on the hydrodynamic radii of aggregates obtained from dynamic light scattering measurements. A wide range of solution compositions predominantly containing dodecyldimethylamine oxide was studied at 308.15 K; the total content of surfactants was from 1 to 15 wt %, pH ∼ 8. Solution viscosities were found to change by several orders of magnitude when the composition of the system was varied; the dependence of viscosity on the ratio of surfactants passes through maximum and inflections. The dependences of viscosity and hydrodynamic radii on the ratio between two surfactants were similar in character. The conclusion was drawn that various nanostructural rearrangements occurred in the solutions studied and synergistic effects were observed.

Original languageEnglish
Pages (from-to)915-921
Number of pages7
JournalRussian Journal of Physical Chemistry A
Volume80
Issue number6
DOIs
Publication statusPublished - 1 Jun 2006

Fingerprint

sodium sulfates
Rheology
rheology
Sodium Dodecyl Sulfate
Surface-Active Agents
viscosity
oxides
surfactants
Viscosity measurement
Viscosity
Hydrodynamics
hydrodynamics
viscometry
radii
Dynamic light scattering
Chemical analysis
light scattering
aqueous solutions
dodecyldimethylamine oxide

Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Safonova, E. A. ; Alekseeva, M. V. ; Filippov, S. K. ; Durrschmidt, T. ; Mokrushina, L. V. ; Hoffmann, H. ; Smirnova, N. A. / The structure and rheology of mixed micellar solutions of sodium dodecyl sulfate and dodecyldimethylamine oxide. In: Russian Journal of Physical Chemistry A. 2006 ; Vol. 80, No. 6. pp. 915-921.
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The structure and rheology of mixed micellar solutions of sodium dodecyl sulfate and dodecyldimethylamine oxide. / Safonova, E. A.; Alekseeva, M. V.; Filippov, S. K.; Durrschmidt, T.; Mokrushina, L. V.; Hoffmann, H.; Smirnova, N. A.

In: Russian Journal of Physical Chemistry A, Vol. 80, No. 6, 01.06.2006, p. 915-921.

Research outputpeer-review

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T1 - The structure and rheology of mixed micellar solutions of sodium dodecyl sulfate and dodecyldimethylamine oxide

AU - Safonova, E. A.

AU - Alekseeva, M. V.

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AU - Durrschmidt, T.

AU - Mokrushina, L. V.

AU - Hoffmann, H.

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AB - The paper presents the results of viscosity measurements by capillary and rotational viscometry for aqueous solutions of sodium dodecyl sulfate and dodecyldimethylamine oxide and data on the hydrodynamic radii of aggregates obtained from dynamic light scattering measurements. A wide range of solution compositions predominantly containing dodecyldimethylamine oxide was studied at 308.15 K; the total content of surfactants was from 1 to 15 wt %, pH ∼ 8. Solution viscosities were found to change by several orders of magnitude when the composition of the system was varied; the dependence of viscosity on the ratio of surfactants passes through maximum and inflections. The dependences of viscosity and hydrodynamic radii on the ratio between two surfactants were similar in character. The conclusion was drawn that various nanostructural rearrangements occurred in the solutions studied and synergistic effects were observed.

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