Iron oxide/MCM-41 mesoporous nanocomposites and their magnetorheology

Title
Iron oxide/MCM-41 mesoporous nanocomposites and their magnetorheology
Authors
최형진
Keywords
Mesoporous . Magnetic particle . Magnetorheological fluid . Nanocomposite
Issue Date
2013
Publisher
COLLOID AND POLYMER SCIENCE
Series/Report no.
COLLOID AND POLYMER SCIENCE; vol.291 startpage 1895 endpage 1901
Abstract
Mesoporous nanocomposite materials of magnetic iron oxide-containing MCM-41 (IO/MCM-41) were prepared by simple thermal oxidation of Fe-containing MCM-41 initially prepared by a direct synthesis route using Fe3+ salt. The magnetic saturation of the fabricated nanocomposite materials was measured using a vibrating sample magnetometer, while surface morphology and inner framework of the composite materials were studied using a field emission scanning electron microscope and a transmission electron microscope to confirm their mesoporous nanocomposite formation. The fabricated magnetic materials were then adopted as a magnetorheological (MR) fluid, where the IO/MCM-41 magnetic nanocomposites were dispersed in a nonmagnetic medium oil in addition to as an additive for carbonyl iron-based MR fluid. Their MR properties of flow curve along with yield stress and viscoelastic properties under applied magnetic fields were investigated using a rotational rheometer.
URI
http://dspace.inha.ac.kr/handle/10505/31892
ISSN
0303-402X
Appears in Collections:
College of Engineering(공과대학) > Polymer Science and Engineering (고분자공학) > Journal Papers, Reports(고분자공학 논문, 보고서)
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