Journal
COLLOID AND POLYMER SCIENCE
Volume 291, Issue 8, Pages 1895-1901Publisher
SPRINGER
DOI: 10.1007/s00396-013-2921-1
Keywords
Mesoporous; Magnetic particle; Magnetorheological fluid; Nanocomposite
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Funding
- National Research Foundation, Korea [43450-1]
- National Research Foundation of Korea [2011-0006592, 2013R1A2A2A05005862] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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