Enhanced magnetorheological performance of highly uniform magnetic carbon nanoparticles

Title
Enhanced magnetorheological performance of highly uniform magnetic carbon nanoparticles
Authors
이승애신근영장정식
Keywords
polypyrrole; Dispersion polymerization; Carbonization; Carbon nanoparticles; Size control; Magnetorheological fluids
Issue Date
2015-06
Publisher
Nanoscale
Citation
VOL 7, NO 21, 9646-9654
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/50011
ISSN
20403364
Appears in Collections:
KIST Publication > Article
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