Colloid and Polymer Science

, Volume 296, Issue 9, pp 1609–1613 | Cite as

Enhanced magnetorheological performance of carbonyl iron/natural rubber composite elastomer with gamma-ferrite additive

  • Chul Joo Lee
  • Seung Hyuk Kwon
  • Hyoung Jin ChoiEmail author
  • Kyung Ho Chung
  • Jae Heum Jung
Short Communication


Magnetorheological (MR) elastomers have attracted considerable attention for their potential applications but their MR efficiency requires significant improvement before they can be used commercially. In this study, rod-shaped hard magnetic gamma-ferrite (γ-Fe2O3) nanoparticles were added to a carbonyl iron (CI)@natural rubber (NR) composite elastomer to enhance the MR effect of CI-based MR elastomers. The surface morphological state of the dispersed magnetic particles was tested using scanning electron microscopy, and the fracture profiles of the MR elastomers made of magnetic particles were observed to be anisotropically aligned by mapping using energy dispersive X-ray spectroscopy. MR properties of the MR elastomers based on pure CI and CI@ γ-Fe2O3 were examined using a rotational rheometer under different magnetic field strengths with an enhanced MR efficiency of about 25%.

Graphical Abstract

The CI@ γ-Fe2O3-based MR elastomer was anisotropically fabricated by adding γ-Fe2O3 nanoparticles and its improved magnetorheological properties were investigated using a rotational rheometer under different magnetic field strengths


Ferrite Additive Carbonyl iron Natural rubber Magnetorheological elastomer 


Funding information

This work was financially supported by the Ministry of Trade, Industry & Energy, Korea (#10047791).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Chul Joo Lee
    • 1
  • Seung Hyuk Kwon
    • 1
  • Hyoung Jin Choi
    • 1
    Email author
  • Kyung Ho Chung
    • 2
  • Jae Heum Jung
    • 3
  1. 1.Department of Polymer Science and EngineeringInha UniversityIncheonSouth Korea
  2. 2.Department of Polymer EngineeringUniversity of SuwonHwaseongSouth Korea
  3. 3.Materials Development TeamDaeheung Rubber & Technology Co.KimhaeSouth Korea

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