Chain Structure in a Cross-Linked Polyurethane Magnetic Elastomer Under a Magnetic Field

The morphology of magnetic particles with a size of 7.0 μm was observed for magnetic elastomers with a concentration of magnetic particles of 70 wt% using an X-ray microscope remolded into high resolution. Computed tomography images revealed that magnetic particles were distributed isotopically in t...

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Bibliographic Details
Published inInternational journal of molecular sciences Vol. 20; no. 12; p. 2879
Main Authors Watanabe, Mayuko, Takeda, Yoshihiro, Maruyama, Takayuki, Ikeda, Junko, Kawai, Mika, Mitsumata, Tetsu
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 13.06.2019
MDPI
Subjects
Elastomers
Epoxy resins
Magnetic fields
Magnetism
Morphology
Physical properties
Rheology
Viscoelasticity
computed tomography
magnetic gel
viscoelastic property
magnetorheology
stimuli-responsive material
magnetic elastomer
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Summary:The morphology of magnetic particles with a size of 7.0 μm was observed for magnetic elastomers with a concentration of magnetic particles of 70 wt% using an X-ray microscope remolded into high resolution. Computed tomography images revealed that magnetic particles were distributed isotopically in the absence of a magnetic field, but they formed a chain structure in the polyurethane network under a magnetic field of 270 mT. It was also established, by image analysis, that magnetic elastomers had an anisotropic structure under the magnetic field.
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ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms20122879