Enhanced magnetorheological performance of highly uniform magnetic carbon nanoparticles
- Enhanced magnetorheological performance of highly uniform magnetic carbon nanoparticles
- 이승애; 신근영; 장정식
- polypyrrole; Dispersion polymerization; Carbonization; Carbon nanoparticles; Size control; Magnetorheological fluids
- Issue Date
- VOL 7, NO 21, 9646-9654
- Magnetic carbon nanoparticles (MC NPs) are prepared on a multi-gram scale through carbonization of iron-doped polypyrrole nanoparticles (PPy NPs). Three different-sized MC NPs (ca. 40, 60 and 90 nm) are prepared and adopted as dispersing materials for magnetorheological (MR) fluids to investigate the influence of particle size on MR properties. The MC NP-based MR fluids exhibit outstanding MR performancescompared to the conventional magnetic carbon material-based fluids. In addition, the MR activities are enhanced with decreasing particle diameter and increasing applied magnetic field strength. Furthermore, anti-sedimentation properties are examined in order to achieve in-depth insight into the effect of the particle size on MR fluids.
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