Rheologica Acta

, Volume 47, Issue 7, pp 787–796 | Cite as

Preparation of well-dispersed magnetorheological fluids and effect of dispersion on their magnetorheological properties

  • Modesto T. López-López
  • Pavel Kuzhir
  • Georges Bossis
  • Pavel Mingalyov
Original Contribution
First Online:
Received:
Revised:
Accepted:

Abstract

In this work, we describe methods for the preparation of suspensions of micron-sized iron particles grafted with different surfactants. The aim is to obtain well-dispersed magnetorheological (MR) fluids. The effectiveness of the surfactants as dispersants was analyzed quantitatively by means of rheological measurements. With this objective, the viscosity of the suspensions was measured, and the results were compared with the prediction of the Batchelor’s formula (Batchelor, J Fluid Mech 83:97–117, 1977). The effect of dispersion on the MR properties of the suspensions was also studied. It was found that the quality of the dispersion of a suspension does not have an important effect on the magnitude of the field-induced yield stress but does on the change of viscosity induced by the field. It was also found that the transition from the solid-like state to the liquid-like one happens very smoothly for well-dispersed suspensions, contrarily to the abrupt transition for poorly dispersed suspensions.

Keywords

Magnetorheological fluids Dispersion Surfactant Yield stress Plastic viscosity 
This is a preview of subscription content, log in to check access.

Notes

Acknowledgments

Eureka E!3733 Hydrosmart project is acknowledged for the financial support. One of the authors (M.T.L.-L.) also acknowledges financial support by Secretaría de Estado de Universidades e Investigación (MEC, Spain) through its Postdoctoral Fellowship Program.

References

  1. Barnes HA, Hutton JR, Walters K (1998) An introduction to rheology. Elsevier, AmsterdamGoogle Scholar
  2. Batchelor GK (1977) Effect of Brownian-motion on bulk stress in a suspension of spherical-particles. J Fluid Mech 83:97–117CrossRefGoogle Scholar
  3. Bossis G, Volkova O, Lacis S, Meunier A (2002) Magnetorheology: fluids, structures and rheology. In: Odenbach S (ed) Ferrofluids. Springer, Berlin, pp 202–230Google Scholar
  4. Charles SW (2002) The preparation of magnetic fluids. In: Odenbach S (ed) Ferrofluids. Springer, Berlin, pp 3–19Google Scholar
  5. Delgado AV, Arroyo FJ (2002) Electrokinetic phenomena and their experimental determination. In: Delgado AV (ed) Interfacial electrokinetics and electrophoresis, Surfactant Science Series. vol. 106. Dekker, New York, pp 1–54Google Scholar
  6. De Vicente J, Delgado AV, Plaza RC, Durán JDG, González-Caballero F (2000) Stability of cobalt ferrite colloidal particles. Effect of pH and applied magnetic fields. Langmuir 16:7954–7961CrossRefGoogle Scholar
  7. De Vicente J, López-López MT, González-Caballero F, Durán JDG (2003) Rheological study of the stabilization of magnetizable colloidal suspensions by addition of silica nanoparticles. J Rheol 47:1093–1109, DOI  10.1122/1.1595094 CrossRefGoogle Scholar
  8. Einstein A (1906) Eine neue Bestimmung der Moleküldimensionen. Ann Phys 324:289–306, DOI  10.1002/andp.19063240205 CrossRefGoogle Scholar
  9. Einstein A (1911) Berichtigung zu meiner Arbeit: Eine neue Bestimmung der Moleküldimensionen. Ann Phys 339:591–592, DOI  10.1002/andp.19113390313 CrossRefGoogle Scholar
  10. Ginder JM (1998) Behavior of magnetorheological fluids. MRS Bull 23:26–29Google Scholar
  11. Ginder JM, Elie LD, Davis LC (1996) Magnetic fluid-based magnetorheological fluids. US Patent 5.549.837Google Scholar
  12. Hunter RJ (1987) Foundations of colloid science, vol I. Oxford University Press, OxfordGoogle Scholar
  13. Krieger IM, Dougherty TJ (1959) A mechanism for non-Newtonian flow in suspensions of rigid spheres. Trans Soc Rheol 3:137–152CrossRefGoogle Scholar
  14. Larson RG (1999) The structure and rheology of complex fluids. Oxford University Press, New YorkGoogle Scholar
  15. López-López MT, de Vicente J, González-Caballero F, Durán JDG (2005a) Stability of magnetizable colloidal suspensions by addition of oleic acid and silica nanoparticles. Colloids Surf A 264:75–81, DOI  10.1016/j.colsurfa.2005.05.026 CrossRefGoogle Scholar
  16. López-López MT, de Vicente J, Bossis G, González-Caballero F, Durán JDG (2005b) Preparation of stable magnetorheological fluids based on extremely bimodal iron-magnetite suspensions. J Mater Res 20:874–881, DOI  10.1557/JMR.2005.0108 CrossRefGoogle Scholar
  17. López-López MT, Zugaldía A, González-Caballero F, Durán JDG (2006a) Sedimentation and redispersion phenomena in iron-based magnetorheological fluids. J Rheol 50:543–560, DOI  10.1122/1.2206716 CrossRefGoogle Scholar
  18. López-López MT, Kuzhir P, Lacis S, Bossis G, González-Caballero F, Durán JDG (2006b) Magnetorheology for suspensions of solid particles dispersed in ferrofluids. J Phys Condens Mat 18:S2803–S2813CrossRefGoogle Scholar
  19. Macosko CW (1994) Rheology: principles, measurements, and applications. Wiley, New YorkGoogle Scholar
  20. Ochonski W (2005) The attraction of ferrofluid bearings. Mach Des 3:96–102Google Scholar
  21. Park JH, Chin BD, Park OK (2001) Rheological properties and stabilization of magnetorheological fluids in a water-in-oil emulsion. J Colloid Interf Sci 240:349–354, DOI  10.1006/jcis.2001.7622 CrossRefGoogle Scholar
  22. Phulé PP, Ginder JM (1998) The materials science of field-responsive fluids. MRS Bull 23:19–21Google Scholar
  23. Phulé PP, Mihalcin MP, Genc S (1999) The role of the dispersed-phase remnant magnetization on the redispersibility of magnetorheological fluids. J Mater Res 14:3037–3041CrossRefGoogle Scholar
  24. Rankin PJ, Horvath AT, Klingenberg DJ (1999) Magnetorheology in viscoplastic media. Rheol Acta 38:471–477CrossRefGoogle Scholar
  25. Rosensweig RE (1985) Ferrohydrodynamics. Cambridge University Press, CambridgeGoogle Scholar
  26. Russel WB, Saville DA, Schowalter WR (1989) Colloidal dispersion. Cambridge University Press, CambridgeGoogle Scholar
  27. Van Ewijk GA, Vroege GJ, Philipse AP (1999) Convenient preparation methods for magnetic colloids. J Magn Magn Mater 201:31–33CrossRefGoogle Scholar
  28. Van Oss CJ, Chaudhury MK, Good RJ (1998) Interfacial Lifshitz–van der Waals and polar interactions in macroscopic systems. Chem Rev 88:927–941, DOI  10.1021/cr00088a006 Google Scholar
  29. Viota JL, de Vicente J, Durán JDG, Delgado AV (2005) Stabilization of magnetorheological suspensions by polyacrylic acid polymers. J Colloid Interf Sci 284:527–541, DOI  10.1016/j.jcis.2004.10.024 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Modesto T. López-López
    • 1
  • Pavel Kuzhir
    • 1
  • Georges Bossis
    • 1
  • Pavel Mingalyov
    • 2
  1. 1.Laboratoire de Physique de la Matière Condensée, CNRS UMR 6622Université de NiceNice Cedex 2France
  2. 2.Laboratory of Organic CatalysisMoscow State UniversityMoscowRussia

Personalised recommendations