Pickering-Emulsion-Polymerized Polystyrene/Fe2O3 Composite Particles and Their Magnetoresponsive Characteristics

Title
Pickering-Emulsion-Polymerized Polystyrene/Fe2O3 Composite Particles and Their Magnetoresponsive Characteristics
Authors
최형진
Issue Date
2013
Publisher
LANGMUIR
Series/Report no.
LANGMUIR; vol.29 no.16 startpage 4959 endpage 4965
Abstract
Core?shell-structured magnetic polystyrene (PS)/inorganic particles were fabricated by Pickering emulsion polymerization using nanosized Fe2O3 particles as a solid stabilizer. Scanning electron microscopy and transmission electron microscopy confirmed the synthesized PS/Fe2O3 particles to be comprised of a PS surface coated with Fe2O3 nanoparticles. The chemical structure of the composite nanospheres was characterized by Fourier transform infrared spectroscopy and X-ray diffraction. The thermal properties of composite nanospheres and corresponding pure polymer were examined by thermogravimetric analysis. The rheological properties of the core?shell-structured magnetic PS/inorganic particles dispersed in silicone oil were investigated under an external magnetic field strength using a rotational rheometer. The particles with extremely lower density than common magnetic particles exhibited solid-like magnetorheological phase characteristics, and the flow curves were fitted to the Cho?Choi?Jhon model of the rheological equation of state.
URI
dx.doi.org/10.1021/la400523w
http://dspace.inha.ac.kr/handle/10505/31687
ISSN
0743-7463
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Local Access Journal Papers, Reports(기계공학 논문, 보고서)

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