Abstract
Core-shell structured soft magnetic carbonyl iron (CI) particles coated with poly(glycidyl methacrylate) were fabricated using a dispersion polymerization method. The surface of the CI particles was pretreated with 4-aminobenzoic acid to enhance the affinity between CI and poly(glycidyl methacrylate) (PGMA). The synthesized CI/PGMA core-shell particles were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. The CI/PGMA particles were dispersed into a non-magnetic liquid for applications as a magnetorheological (MR) fluid, in which the rheological properties can be altered significantly by an external magnetic field. The MR suspension was analyzed using a rotational rheometer at various magnetic field strengths. Although the fabricated CI particles exhibited lower MR properties than pure CI particles, they showed improved dispersion stability according to the Turbiscan apparatus.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
