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Cholesteryl-coated carbonyl iron particles with improved anti-corrosion stability and their viscoelastic behaviour under magnetic field

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Abstract

In principle, bare particles used in magnetorheological suspensions exhibit apparent corrosion instability. To suppress substantially this adverse phenomenon, the carbonyl iron particles modified with cholesteryl group (CI-chol) were suspended in silicone oil. There was found a deterioration of magnetorheological efficiency in comparison when only bare carbonyl iron (CI) particles are used; nevertheless, from the viewpoint of applicability, this change is fully acceptable. However, an anti-corrosion stability was significantly improved. Furthermore, dynamic oscillatory measurements and other characterizations were carried out and analyzed when both CI and CI-chol particles are applied.

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Acknowledgments

Author M.S. wish to thank the Grant Agency of the Czech Republic (14-32114P) for financial support. This article was written with support of the Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund (ERDF) and the National Budget of Czech Republic, within the framework of the project Centre of Polymer Systems (CZ.1.05/2.1.00/03.0111). M. I. and J. M. thank the Centre of Excellence SAS for Functionalized Multiphase Materials (FUN-MAT).

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Authors and Affiliations

  1. Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Nad Ovcirnou 3685, 760 01, Zlin, Czech Republic

    M. Mrlik & M. Sedlacik

  2. Center for Advanced Materials, Qatar University, P. O. Box 2713, Doha, Qatar

    M. Mrlik & M. Ilcikova

  3. Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 845 41, Bratislava 45, Slovakia

    M. Ilcikova & J. Mosnacek

  4. Institute of Hydrodynamics, Academy of Sciences of the Czech Republic, Pod Patankou 5, 166 12, Prague 6, Czech Republic

    P. Peer & P. Filip

Authors
  1. M. Mrlik
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  2. M. Ilcikova
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  3. M. Sedlacik
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  4. J. Mosnacek
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  5. P. Peer
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  6. P. Filip
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Correspondence to M. Mrlik.

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Mrlik, M., Ilcikova, M., Sedlacik, M. et al. Cholesteryl-coated carbonyl iron particles with improved anti-corrosion stability and their viscoelastic behaviour under magnetic field. Colloid Polym Sci 292, 2137–2143 (2014). https://doi.org/10.1007/s00396-014-3245-5

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  • DOI: https://doi.org/10.1007/s00396-014-3245-5

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