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Improved tunable range of the field-induced storage modulus by using flower-like particles as the active phase of magnetorheological elastomers

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Abstract

The field-induced storage modulus is an important parameter for the applications of magnetorheological (MR) elastomers. In this study, a model mechanism is established to analyze the potential benefits of using flower-like particles as the active phase compared with the benefits of using conventional spherical particles. To verify the model mechanism and to investigate the difference in dynamic viscoelasticity between MREs with spherical particles and flower-like particles, flower-like cobalt particles and spherical cobalt particles with similar particle sizes and magnetic properties are synthesized and used as the active phase to prepare MR elastomers. As the model predicts, MREs with flower-like cobalt particles present a higher crosslink density and enhanced interfacial bond strength, which leads to a higher storage modulus and higher loss modulus with respect to MREs with spherical cobalt particles. The tunable range of the field-induced storage modulus of MREs is also improved upon using the flower-like particles as the active phase.

Graphical abstract: Improved tunable range of the field-induced storage modulus by using flower-like particles as the active phase of magnetorheological elastomers

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Publication details

The article was received on 21 Feb 2018, accepted on 02 Apr 2018 and first published on 03 Apr 2018


Article type: Paper
DOI: 10.1039/C8SM00359A
Citation: Soft Matter, 2018, Advance Article
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    Improved tunable range of the field-induced storage modulus by using flower-like particles as the active phase of magnetorheological elastomers

    Y. Tong, X. Dong and M. Qi, Soft Matter, 2018, Advance Article , DOI: 10.1039/C8SM00359A

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