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Preparation of Al@Fe2O3 Core-Shell Composites Using Amphiphilic Graft Copolymer Template
김종학 ( Jong Hak Kim ),라즈쿠마파텔 ( Rajkumar Patel ),김상진 ( Sang Jin Kim ),김진규 ( Jin Kyu Kim ),박정수 ( Jung Su Park ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.2
A graft copolymer of poly(vinyl chloride)-g-poly(oxy ethylene methacrylate) (PVC-g-POEM) was synthesized via atom transfer radical polymerization (ATRP) and used as a structure-directing agent to prepare Al@Fe2O3 core-shell nanocomposites through a sol-gel process. The amphiphilic property of PVC-g-POEM allows for good dispersion of Al particles and leads to specific interaction with iron ethoxide, a precursor of Fe2O3. Secondary bonding interaction in the sol-gel composites was characterized by Fourier transform-infrared (FT-IR) spectroscopy. The wellorganized morphology of Al@Fe2O3 core-shell nanocomposites was observed using scanning electron microscopy(SEM) and transmission electron microscopy (TEM). Energy dispersive X-ray (EDX) and X-ray diffraction (XRD) were used to analyze the elemental composition and crystallization structure of the composites.