Title :
In-situ preparation of biopolymer/Fe3O4 hybrid nanocomposites in supercritical carbon dioxide
Author :
Van Hoa Nguyen ; Yuvaraj, Haldorai ; Pham, Quang Long ; Zong, Tongqiang ; Shim, Jae Jin
Author_Institution :
Dept. of Chem. Eng., Yeungnam Univ., Gyeongsan, South Korea
Abstract :
Poly(2-hydroxyethyl methacrylate) magnetic nanocomposites was synthesized by dispersion polymerization in supercritical carbon dioxide in the presence of 3-(trimethoxysilyl) propylmethacrylate surface modified Fe3O4 nanoparticles using poly(DMAEMA-co-FOMA) a stabilizer. The resulting products were characterized for structure, morphology, thermal behavior by FT-IR, TEM, TGA, XRD, and XPS techniques. These studies indicated that Fe3O4 nanocomposites were coated with a polymer layer. Magnetic property of the nanocomposites was measured using MPMS XL 7.0, which indicated that the nanocomposites are superparamagnetic and a saturation magnetization of 5.5 emu/g with 40% Fe3O4 content.
Keywords :
X-ray diffraction; X-ray photoelectron spectra; crystal morphology; iron compounds; magnetisation; nanobiotechnology; nanocomposites; polymers; superparamagnetism; thermal analysis; thermal properties; transmission electron microscopy; 3-(trimethoxysilyl) propylmethacrylate; FT-IR technique; JkJk-Fe3O4; Poly(2-hydroxyethyl methacrylate) magnetic nanocomposites; TEM technique; TGA technique; XPS technique; XRD technique; biopolymer; dispersion polymerization; hybrid nanocomposite; morphology; poly(DMAEMA-co-FOMA); saturation magnetization; structure; supercritical carbon dioxide; superparamagnetic particles; thermal behavior;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2010 10th IEEE Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-7033-4
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2010.5697916
