Magnetorheology of Polydimethylsiloxane Elastomer/FeCo3 Nanocomposite
| Autor: | Ashutosh Sharma, Bablu Mordina, Rajesh Kumar Tiwari, Dipak Kumar Setua |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Nanocomposite Magnetometer Physics::Optics Nanoparticle Elastomer Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Condensed Matter::Materials Science General Energy Ferromagnetism Optical microscope Transmission electron microscopy law Magnetorheological fluid Physical and Theoretical Chemistry Composite material |
| Zdroj: | The Journal of Physical Chemistry C. 118:25684-25703 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | We investigate for the first time the magnetorheological (MR) properties of bimetallic alloy nanocomposites based on cross-linked polydimethylsiloxane elastomer and ferromagnetic FeCo3 nanoparticles. The nanoparticles (∼30 nm), with a saturation magnetization value of 166 emu/g, are synthesized by hydrazine reduction of Fe2+ and Co2+ metal ions. Isotropic and anisotropic nanocomposite films are prepared by a solution casting technique with 5, 10, and 20 wt % FeCo3 in the absence and presence of 0.2 T magnetic field, respectively. The structural, morphological, and magnetic properties of nanoparticles and their composites are characterized by X-ray diffraction, transmission electron microscopy, field emission scanning electron microscopy, confocal and optical microscopy, and vibrating sample magnetometer analysis. Steady-state and dynamic mechanical properties of the nanocomposite under a magnetic field are evaluated by rotary shear, strain amplitude sweep, angular frequency sweep, and magnetic flux densit... |
| Databáze: | OpenAIRE |
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