Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate)

The magnetorheological response for magnetic elastomers containing carbonyl iron (CI) particles with a diameter of 6.7 μm coated with poly(methyl methacrylate) (PMMA) was investigated to estimate the diameter of secondary particles from the amplitude of magnetorheological response. Fourier-transform...

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Autores principales: Takahashi, Daichi, Sainath, Annadanam Venkata Sesha, Ikeda, Junko, Budpud, Kulisara, Kaneko, Tatsuo, Kawai, Mika, Mitsumata, Tetsu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865952/
https://www.ncbi.nlm.nih.gov/pubmed/33494391
http://dx.doi.org/10.3390/polym13030335
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author Takahashi, Daichi
Sainath, Annadanam Venkata Sesha
Ikeda, Junko
Budpud, Kulisara
Kaneko, Tatsuo
Kawai, Mika
Mitsumata, Tetsu
author_facet Takahashi, Daichi
Sainath, Annadanam Venkata Sesha
Ikeda, Junko
Budpud, Kulisara
Kaneko, Tatsuo
Kawai, Mika
Mitsumata, Tetsu
author_sort Takahashi, Daichi
collection PubMed
description The magnetorheological response for magnetic elastomers containing carbonyl iron (CI) particles with a diameter of 6.7 μm coated with poly(methyl methacrylate) (PMMA) was investigated to estimate the diameter of secondary particles from the amplitude of magnetorheological response. Fourier-transformed infrared spectroscopy revealed that the CI particles were coated with PMMA, and the thickness of the PMMA layer was determined to be 71 nm by density measurement. The change in the storage modulus for magnetic elastomers decreased by coating and it was scaled by the number density of CI particles as ΔG~N(2.8). The diameter of secondary particle of CI particles coated with PMMA was calculated to be 8.4 μm. SEM images revealed that the CI particles coated with PMMA aggregated in the polyurethane matrix.
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spelling pubmed-78659522021-02-07 Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate) Takahashi, Daichi Sainath, Annadanam Venkata Sesha Ikeda, Junko Budpud, Kulisara Kaneko, Tatsuo Kawai, Mika Mitsumata, Tetsu Polymers (Basel) Article The magnetorheological response for magnetic elastomers containing carbonyl iron (CI) particles with a diameter of 6.7 μm coated with poly(methyl methacrylate) (PMMA) was investigated to estimate the diameter of secondary particles from the amplitude of magnetorheological response. Fourier-transformed infrared spectroscopy revealed that the CI particles were coated with PMMA, and the thickness of the PMMA layer was determined to be 71 nm by density measurement. The change in the storage modulus for magnetic elastomers decreased by coating and it was scaled by the number density of CI particles as ΔG~N(2.8). The diameter of secondary particle of CI particles coated with PMMA was calculated to be 8.4 μm. SEM images revealed that the CI particles coated with PMMA aggregated in the polyurethane matrix. MDPI 2021-01-21 /pmc/articles/PMC7865952/ /pubmed/33494391 http://dx.doi.org/10.3390/polym13030335 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Takahashi, Daichi
Sainath, Annadanam Venkata Sesha
Ikeda, Junko
Budpud, Kulisara
Kaneko, Tatsuo
Kawai, Mika
Mitsumata, Tetsu
Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate)
title Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate)
title_full Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate)
title_fullStr Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate)
title_full_unstemmed Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate)
title_short Magnetorheological Response for Magnetic Elastomers Containing Carbonyl Iron Particles Coated with Poly(methyl methacrylate)
title_sort magnetorheological response for magnetic elastomers containing carbonyl iron particles coated with poly(methyl methacrylate)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865952/
https://www.ncbi.nlm.nih.gov/pubmed/33494391
http://dx.doi.org/10.3390/polym13030335
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