Advertisement

Il Nuovo Cimento D

, Volume 16, Issue 9, pp 1401–1410 | Cite as

Rheological behaviour of worm-like micelles: Effect of electrostatic interactions

  • S. J. Candau
  • P. Hebraud
  • V. Schmitt
  • F. Lequeux
  • F. Kern
  • R. Zana
Article

Summary

Both linear and non-linear viscoelasticity experiments have been performed in semi-dilute micellar aqueous solutions of ethanediyl-α,ω-bis (dodecylmethylammonium bromide) as a function of solution chloride (NaCl) concentration. The results suggest that both linear and non-linear properties are affected by the electrostatic interactions. In particular, the plateau modulus G and the ratio σm/G, where σm represents the plateau value in a stress-shear rate experiment, are enhanced as the electrostatic interactions are screened by addition of salt. The zero-shear viscosity is lowered upon addition of NaCl, due likely to an exchange of the Cl ions with the Br counterions.

PACS 62.10

Mechanical properties of liquids 

PACS 01.30.Cc

Conference proceedings 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    M. E. Cates and S. J. Candau: J. Phys. Condens. Matter, 2, 6869 (1990); H. Rehage and H. Hoffmann: Mol. Phys., 74, 933 (1991).CrossRefADSGoogle Scholar
  2. [2]
    P. Schurtenberger, S. Scartazzini, L. Magid, M. Leser and P. L. Luisi: J. Phys. Chem., 94, 3695 (1990).CrossRefGoogle Scholar
  3. [3]
    M. E. Cates: Macromolecules, 20, 2289 (1987); J. Phys. (Paris), 49, 1593 (1988); J. Phys. Chem., 94, 371 (1990).CrossRefGoogle Scholar
  4. [4]
    F. Kern, F. Lequeux, R. Zana and S. J. Candau: Langmuir, 10, 1714 (1994).CrossRefGoogle Scholar
  5. [5]
    L. Wunderlich, H. Hoffmann and H. Rehage: Rheol. Acta, 26, 532 (1987).CrossRefGoogle Scholar
  6. [6]
    H. Hoffmann: Rheology of Surfactant Solutions, Proceedings of the CCVI ACS National Meeting, Chicago, August 22–27, 1993.Google Scholar
  7. [7]
    F. C. Mackintosh, S. A. Safran and P. A. Pincus: Europhys. Lett., 12, 8697 (1990).CrossRefGoogle Scholar
  8. [8]
    S. A. Safran, P. A. Pincus, M. E. Cates and F. C. Mackintosh: J. Phys. (Paris), 51, 503 (1990).Google Scholar
  9. [9]
    M. E. Cates and M. Turner: Europhys. Lett., 11, 681 (1990); M. Turner and M. E. Cates: J. Phys. (Paris), 51, 307 (1990); R. Granek and M. E. Cates: J. Chem. Phys., 96, 4758 (1992); M. Turner and M. E. Cates: Langmuir, 7, 1590 (1991).CrossRefADSGoogle Scholar
  10. [10]
    M. E. Cates: J. Phys. Chem., 94, 371 (1990); N. A. Spenley, M. E. Cates and T. C. B. McLeish: Phys. Rev. Lett., 71, 939 (1993).CrossRefGoogle Scholar
  11. [11]
    M. Doi and S. F. Edwards: J.C.S. Faraday Trans., 75, 38 (1979); 74., 1789 (1978); The Theory of Polymer Dynamics (Oxford Science Publication, 1986).CrossRefGoogle Scholar
  12. [12]
    M. E. Cates, T. C. G. McLeish and G. Marrucci: Europhys. Lett., 21, 451 (1993).CrossRefADSGoogle Scholar
  13. [13]
    A. Khatory: Thesis (1993); A. Khatory, F. Lequeux, F. Kern and S. J. Candau: Langmuir, 9, 1456 (1993).Google Scholar
  14. [14]
    F. Kern, P. Lemarechal, S. J. Candau and M. E. Cates: Langmuir, 8, 437 (1992).CrossRefGoogle Scholar
  15. [15]
    P. G. De Gennes: Scalling Concepts in Polymer Physics (Cornell University Press, Ithaca, N.Y., 1979).Google Scholar
  16. [16]
    J. Klein: Macromolecules, 11, 852 (1978).CrossRefGoogle Scholar
  17. [17]
    V. Schmitt, F. Schosseler and F. Lequeux: to be published.Google Scholar
  18. [18]
    J. L. Barrat and J. F. Joanny: J. Phys. II, 4, 1089 (1994); T. A. Witten and P. A. Pincus: J. Phys. II, 4, 1103 (1994).CrossRefGoogle Scholar
  19. [19]
    V. Schmitt, F. Lequeux, A. Pousse and D. Roux: Langmuir, 10, 955 (1994).CrossRefGoogle Scholar
  20. [20]
    J. F. Berret, D. C. Roux and G. Porte: J. Phys. II, 4, 1261 (1994).CrossRefGoogle Scholar
  21. [21]
    G. Porte and J. Appell: Surfactants in Solutions, edited by K. L. Mittal and B. Lindman, Vol. 2 (Plenum Press, 1983), p. 805.Google Scholar
  22. [22]
    F. Lequeux: Europhys Lett., 19, 675 (1992).CrossRefADSGoogle Scholar
  23. [23]
    M. E. Cates and T. J. Drye: J. Chem. Phys., 96, 1367 (1991).Google Scholar

Copyright information

© Società Italiana di Fisica 1994

Authors and Affiliations

  • S. J. Candau
    • 1
  • P. Hebraud
    • 1
  • V. Schmitt
    • 1
  • F. Lequeux
    • 1
  • F. Kern
    • 1
  • R. Zana
    • 2
  1. 1.Laboratoire d’Ultrasons et de Dynamique des Fluides Complexes Unité de Recherche Associée au CNRS n. 851Université Louis PasteurStrasbourg CedexFrance
  2. 2.Institut Charles Sadron (CRM-EAHP)Strasbourg CedexFrance

Personalised recommendations