Lee, Seungae Shin, Keun-Young Jang, Jyongsik 2024-01-20T07:01:16Z 2024-01-20T07:01:16Z 2021-09-05 2015-06 2040-3364 https://pubs.kist.re.kr/handle/201004/125365 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 performances compared 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. English ROYAL SOC CHEMISTRY IRON PARTICLES CONDUCTING POLYMER FACILE SYNTHESIS POLYPYRROLE NANOTUBES FLUIDS FABRICATION COMPOSITE SURFACE STABILIZATION Enhanced magnetorheological performance of highly uniform magnetic carbon nanoparticles Article 10.1039/c4nr07168a 1 NANOSCALE, v.7, no.21, pp.9646 - 9654 NANOSCALE 7 21 9646 9654 scie scopus 000354983100039 2-s2.0-84930079430 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article IRON PARTICLES CONDUCTING POLYMER FACILE SYNTHESIS POLYPYRROLE NANOTUBES FLUIDS FABRICATION COMPOSITE SURFACE STABILIZATION polypyrrole Dispersion polymerization Carbonization Carbon nanoparticles Size control Magnetorheological fluids