Sequential Coating of Magnetic Carbonyliron Particles with Polystyrene and Multiwalled Carbon Nanotubes and Its Effect on Their Magnetorheology
Fei Fei Fang
Hyoung Jin Choi
Yongsok Seo
10.1021/am900577w.s001
https://acs.figshare.com/articles/journal_contribution/Sequential_Coating_of_Magnetic_Carbonyliron_Particles_with_Polystyrene_and_Multiwalled_Carbon_Nanotubes_and_Its_Effect_on_Their_Magnetorheology/2796724
A two-step process for the sequential coating of magnetic carbonyliron (CI) particles with polystyrene (PS) and multiwalled carbon nanotubes (MWCNTs) was used to improve the sedimentation stability of micrometer-sized magnetic CI particles for magnetorheological (MR) applications under an applied magnetic field. The CI particles were initially coated with nanosized PS beads using an in situ dispersion polymerization method and then wrapped with a dense MWCNT nest through a solvent-casting method in a water/oil emulsion system. The morphology, MR performance, and sedimentation stability of the synthesized magnetic composite particles were examined. The composite particles showed enhanced MR characteristics and dispersion stability.
2010-01-27 00:00:00
nanosized PS beads
CI particles
Magnetic Carbonyliron Particles
MWCNT
sedimentation stability
Multiwalled Carbon Nanotubes
dispersion polymerization method
MR
multiwalled carbon nanotubes