Synthesis,characterization, and properties of monodispersed magnetite coated multi‐walled carbon nanotube/polypyrrole nanocomposites synthesized by in‐situ chemical oxidative polymerization |
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| Authors: | Tzong‐Ming Wu Shiang‐Jie Yen Erh‐Chiang Chen Ray‐Kuang Chiang |
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| Institution: | 1. Department of Materials Science and Engineering, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, Taiwan 402;2. Department of Electronic Materials, Far East University, 49 Chung Hua Road, Hsin‐Shih, Tainan County, Taiwan 744 |
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| Abstract: | This study describes the preparation of a nanocomposites fabricated from monodispersed 4‐nm iron oxide (Fe3O4) coated on the surface of carboxylic acid containing multi‐walled carbon nanotube (c‐MWCNT) and polypyrrole (PPy) by in situ chemical oxidative polymerization. High‐resolution transmission electron microscopy images and X‐ray diffraction (XRD) data indicate that the resulting Fe3O4 nanoparticles synthesized using the thermal decomposition are close to spherical dots with a particle size about 4 ± 0.2 nm. The resulting nanoparticles were further mixed with c‐MWCNT in an aqueous solution containing with anionic surfactant sodium bis(2‐ethylhexyl) sulfosuccinate to form one‐dimensional Fe3O4 coated c‐MWCNT template for further preparation of nanocomposite. Structural and morphological analysis using field‐emission scanning electron microscopy, high‐resolution transmission electron microscopy, and XRD showed that the fabricated Fe3O4 coated c‐MWCNT/PPy nanocomposites are one‐dimensional core (Fe3O4 coated c‐MWCNT)‐shell (PPy) structures. The conductivities of these Fe3O4 coated c‐MWCNT/PPy nanocomposites are about four times higher than those of pure PPy matrix. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 727–733, 2008 |
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| Keywords: | conductivity iron oxide morphology multi‐walled carbon nanotubes nanocomposite polypyrrole |
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