Gels pp 57-63 | Cite as

Gels with magnetic properties

  • L. Barsi
  • A. Büki
  • D. Szabó
  • M. Zrinyi
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 102)


Materials producing strain in magnetic field are known as magnetoelastic or magneto strictive materials. A new type has been developed by preparing magnetic field sensitive gels, called ferrogels. Single domain, magnetic particles of colloidal size are incorporated into chemically cross-linked polyvinyl-alcohol hydrogels. The finely distributed colloidal particles having superparamgnetic behavior couple the shape of the gel to the nonuniform external magnetic field. We have shown that ferrogels undergo quick and reversible shape transformation by changes in external magnetic field. Elongation, contraction and bending can be realized by proper arrangement of external magnetic field. Unidirectional deformation measurements have been performed and an equation for the uniaxial magnetoelastic properties has been derived and compared with experimental results.

Key words

Magnetic gels superparamagnetic behavior filled networks magnetoelasticity magnetostriction 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Osada Y (1987) Advances in Polymer Science 82:1Google Scholar
  2. 2.
    de Ross, Kawana K, Osada Y, Yamauchi A (Eds) (1991) Polymer Gels Fundamental and Biomedical Applications. Plenum Press, New YorkGoogle Scholar
  3. 3.
    Tanaka T (1982) Science 218:467CrossRefGoogle Scholar
  4. 4.
    Zrínyi M, Barsi L, Büki A (1995) Europhysics Conference Abstract Vol 19, p 40Google Scholar
  5. 5.
    Zrínyi M, Barsi L, Büki A, Polymer Gels and Networks (in press)Google Scholar
  6. 6.
    Mark JE (1985) British Polymer Journal 17:144CrossRefGoogle Scholar
  7. 7.
    Haas W, Zrínyi M, Kilian H-G, Heise B (1993) Colloid and Polymer Science 271:1024CrossRefGoogle Scholar
  8. 8.
    Rosenweig RE (1985) Ferrrohydrodynamics, Cambridge University Press, Cambridge, London, New York, New Rochelle, Melburbe, SydneyGoogle Scholar
  9. 9.
    Dusek K, Prins W (1969) Advances in Polymer Science 6:1CrossRefGoogle Scholar
  10. 10.
    Tanaka T (1978) Phys Rev Lett 40:820CrossRefGoogle Scholar
  11. 11.
    Mark JE, Erman B (1988) Rubberlike Elasticity a Molecular Primer. John Wiley Sons New York, Chichester, Brisbance, Toronto, SingaporeGoogle Scholar
  12. 12.
    Kilian H-G (1987) Colloid and Polymer Science 265:410CrossRefGoogle Scholar
  13. 13.
    Szabó D, Barsi L, BÜki A, Zrinyi M, submitted to Models in ChemistryGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1996

Authors and Affiliations

  • L. Barsi
    • 1
  • A. Büki
    • 1
  • D. Szabó
    • 1
  • M. Zrinyi
    • 1
  1. 1.Department of Physical Chemistrytechnical University of BudapestBudapestHungary

Personalised recommendations