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Gels with magnetic properties

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Gels

Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 102))

Abstract

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.

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Author information

Authors and Affiliations

  1. Department of Physical Chemistry, technical University of Budapest, 1521, Budapest, Hungary

    L. Barsi, A. Büki, D. Szabó & M. Zrinyi

Authors
  1. L. Barsi
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  2. A. Büki
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  3. D. Szabó
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  4. M. Zrinyi
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Editor information

M. Zrínyi

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

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Barsi, L., Büki, A., Szabó, D., Zrinyi, M. (1996). Gels with magnetic properties. In: Zrínyi, M. (eds) Gels. Progress in Colloid & Polymer Science, vol 102. Steinkopff. https://doi.org/10.1007/BFb0114389

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  • DOI: https://doi.org/10.1007/BFb0114389

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  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-1065-4

  • Online ISBN: 978-3-7985-1663-2

  • eBook Packages: Springer Book Archive

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