Skip to main content
SpringerLink
Log in

Partition Equilibria for Alcohols in Reverse Micellar AOT-Oil-Water Systems Studied by PGSE-FT NMR. A Comparison Between AOT-containing and the Corresponding AOT-free Systems

  • Original Paper
  • Published:
Journal of Solution Chemistry Aims and scope Submit manuscript

Abstract

Microemulsions of the reverse micellar type were investigated by determining the self-diffusion coefficients of the components using the Pulsed Field Gradient Spin Echo – Fourier Transform NMR method (PGSE-FT NMR). The microemulsions were composed of the surfactant AOT, water and an oil (either benzene or cyclohexane), forming a water core in an oil continuum. The primary alcohols ranging from methanol to 1-decanol were added to the microemulsions as a fourth component. The degree of binding, p, of the alcohol to the micelles was determined from the measured self-diffusion coefficients for this component. Partition equilibrium constants were calculated from the values of p. Thermodynamic partition equilibrium constants, K c , calculated from the partition coefficients are presented and compared with values based on literature data for AOT-free systems. Similarities and differences between these cases are revealed and interpreted.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Prince, L.M.: In: Prince, L.M. (ed.) Microemulsions, pp. 1–32. Academic Press, New York (1977)

    Google Scholar 

  2. Evans, D.F., Wennerström, H.: The Colloidal Domain. VCH Publishers Inc., New York (1994)

    Google Scholar 

  3. Larsson, K.M., Adlercreutz, P., Mattiasson, B., Olsson, U.: Enzyme catalysis in uni- and bi-continous microemulsions: Dependence of kinetics on substrate partitioning. J. Chem. Soc. Faraday Trans. 87, 465–471 (1991)

    Article  CAS  Google Scholar 

  4. Bansal, V.K., Shah, D.O.: In: Prince, L. M. (ed.) Microemulsions, pp. 149–173. Academic Press, New York (1977)

    Google Scholar 

  5. Abuin, E., Lissi, E., Duarte, R., Silber, J.J., Biasutti, M.A.: Solubilization in AOT-water reverse micelles. Effect of the external solvent. Langmuir 18, 8340–8344 (2002)

    Article  CAS  Google Scholar 

  6. Stilbs, P.: Solubilization equilibria determined through Fourier transform NMR self-diffusion measurements. J. Colloid Interface Sci. 80, 608–610 (1981)

    Article  CAS  Google Scholar 

  7. Stilbs, P.: Fourier transform NMR pulsed-gradient spin-echo (FT-PGSE) self-diffusion measurements of solubilization equilibria in SDS solutions. J. Colloid Interface Sci. 87, 385–394 (1982)

    Article  CAS  Google Scholar 

  8. Stilbs, P.: Micellar breakdown by short-chain alcohols. A multicomponent FT-PGSE-NMR self-diffusion study. J. Colloid Interface Sci. 89, 547–554 (1982)

    Article  CAS  Google Scholar 

  9. Stilbs, P.: A comparative study of micellar solubilization for combinations of surfactants and solibilizates using the Fourier transform pulsed-gradient spin-echo NMR multicomponent self-diffusion technique. J. Colloid Interface Sci. 94, 463–469 (1983)

    Article  CAS  Google Scholar 

  10. Skrzecz, A., Shaw, D., Maczynski, A.: IUPAC-NIST Solubility Data Series 69. Ternary alcohol – hydrocarbon – water systems. J. Phys. Chem. Ref. Data 28, 983–1235 (1999)

    Article  CAS  Google Scholar 

  11. Stilbs, P.: Fourier transform pulsed-gradient spin-echo studies of molecular diffusion. Prog. NMR Spectrosc. 19, 1–45 (1987)

    Article  CAS  Google Scholar 

  12. von Meerwall, E.D.: Self-diffusion in polymer systems, measured with field-gradient spin echo NMR methods. Adv. Polym. Sci. 54, 1–29 (1984)

    CAS  Google Scholar 

  13. Lindblom, G., Orädd, G.: NMR Studies of translational diffusion in lyotropic liquid crystals and lipid membranes. Prog. NMR Spectrosc. 26, 483–515 (1994)

    Article  CAS  Google Scholar 

  14. Masaro, L., Zhu, X.X.: Pulsed field gradient NMR spectroscopy in the study of self-diffusion in polymer systems. Can. J. Anal. Sci. Spectrosc. 43, 81–89 (1998)

    CAS  Google Scholar 

  15. von Meerwall, E.D.: How good is the bead-spring model? J. Non-Cryst. Solids 131–133, 551–555 (1991)

    Google Scholar 

  16. Stejskal, E.O., Tanner, J.E.: Spin diffusion measurements: spin echoes in the presence of a time-dependent field gradient. J. Chem. Phys. 42, 288–292 (1965)

    Article  CAS  Google Scholar 

  17. Johannessen, E., Walderhaug, H., Balinov, B.: Aqueous microemulsions of a fluorinated surfactant and oil studied by PFG-NMR: transformation from threadlike to spherical micelles. Langmuir 20, 336–341 (2004)

    Article  CAS  Google Scholar 

  18. Stilbs, P., Paulsen, K., Griffiths, P.C.: Global least-squares analysis of large, correlated spectral data sets: application to component-resolved FT-PGSE NMR spectroscopy. J. Phys. Chem. 100, 8180–8189 (1996)

    Article  CAS  Google Scholar 

  19. Stilbs, P., Paulsen, K.: Global least-squares analysis of large, correlated spectral data sets and application to chemical kinetics and time-resolved fluorescence. Rev. Sci. Instrum. 67, 4380–4386 (1996)

    Article  CAS  Google Scholar 

  20. Stilbs, P.: Component separation in NMR imaging and multidimensional spectroscopy through global least-squares analysis, based on prior knowledge. J. Magn. Reson. 135, 236–241 (1998)

    Article  CAS  Google Scholar 

  21. Callaghan, P.T., Le Gros, M.A., Pinder, D.N.: The measurement of diffusion using deuterium pulsed field gradient nuclear magnetic resonance. J. Chem. Phys. 79, 6372–6381 (1983)

    Article  CAS  Google Scholar 

  22. Stilbs, P., Lindman, B.: NMR measurements on microemulsions. Progr. Colloid Polymer Sci. 69, 39–47 (1984)

    CAS  Google Scholar 

  23. Jönsson, B., Wennerström, H., Nilsson, P.G., Linse, P.: Self-diffusion of small molecules in colloidal systems. Colloid Polymer Sci. 264, 77–88 (1986)

    Article  Google Scholar 

  24. C.R.C. Handbook of Chemistry and Physics, 84th Ed. (2003–2004)

  25. Kotlarchyk, M., Chen, S-H., Huang, J.S.: Temperature dependence of size and polydispersity in a three-component microemulsion by small-angle neutron scattering. J. Phys. Chem. 86, 3273–3276 (1982)

    Article  CAS  Google Scholar 

  26. Eicke, H-F., Rehak, J.: On the formation of water/oil-microemulsions. Helv. Chim. Acta 59, 2883–2891 (1976)

    Article  CAS  Google Scholar 

  27. Martin, C.A., Magid, L.J.: Carbon-13 NMR investigations of aerosol OT water-in-oil microemulsions. J. Phys. Chem. 85, 3938–3944 (1981)

    Article  CAS  Google Scholar 

  28. Day, R.A., Robinson, B.H., Clarke, J.H.R, Doherty, J.V.: Characterisation of water-containing reversed micelles by vicosity and dynamic light scattering methods. J. Chem. Soc., Faraday Trans. 1 75, 132–139 (1979)

    Article  CAS  Google Scholar 

  29. Howe, A.M., Toprakcioglu, C., Dore, J.C., Robinson, B.H.: Small-angle neutron scattering studies of microemulsions stabilised by aerosol-OT. J. Chem. Soc., Faraday Trans.1 82, 2411–2422 (1986)

    Article  CAS  Google Scholar 

  30. Lin, T.-L., Hu, Y., Lee, T.-T.: The effect of alcohols on the size of water-in-oil microemulsion droplets. Prog. Colloid. Polym. Sci. 105, 268–271 (1997)

    Article  CAS  Google Scholar 

  31. Blees, M.H., Geurts, J. M., Leyte, J.C.: Self-diffusion of charged polybutadiene latex particles in water measured by pulsed field gradient NMR. Langmuir 12, 1947–1957 (1996)

    Article  CAS  Google Scholar 

  32. Sakurai, M., Nakamura, K., Takenaka, N.: Apparent molar volumes and apparent molar adiabatic compressions of water in some alcohols. Bull. Chem. Soc. Jpn. 67, 352–359 (1994)

    Article  CAS  Google Scholar 

  33. Friedman, M.E., Scheraga, H.A.: Volume changes in hydrocarbon-water systems. partial molal volumes of alcohol-water solutions. J. Phys. Chem. 69, 3795–3800 (1965)

    Article  CAS  Google Scholar 

  34. Söderman, O., Balinov, B.: Microstructures in solution and ordered phases of surfactants. Self-diffusion in the AOT/octanol/water system. Progr. Colloid Polym. Sci. 108, 105–110 (1998)

    Article  Google Scholar 

  35. Rosenholm, J.B., Grigg, R.B., Hepler, L.G.: Thermodynamic properties of aqueous solutions of surfactants: molar heat capacities and volumes. J. Chem. Thermodyn. 18, 1153–1163 (1986)

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemistry, University of Oslo, P.O.B. 1033, Blindern, N-0315, Oslo, Norway

    Harald Walderhaug

  2. Department of Physical Chemistry, Graduate School of Materials Research, Åbo Akademi University, Porthansgatan 3-5, FI-20500, Turku, Finland

    Espen Johannessen

Authors
  1. Harald Walderhaug
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Espen Johannessen
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Harald Walderhaug.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Walderhaug, H., Johannessen, E. Partition Equilibria for Alcohols in Reverse Micellar AOT-Oil-Water Systems Studied by PGSE-FT NMR. A Comparison Between AOT-containing and the Corresponding AOT-free Systems. J Solution Chem 35, 979–989 (2006). https://doi.org/10.1007/s10953-006-9039-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10953-006-9039-8

Keywords

Search

Navigation