Journal
JOURNAL OF EXPERIMENTAL NANOSCIENCE
Volume 8, Issue 1, Pages 113-120Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17458080.2012.674218
Keywords
polypyrrole; Fe3O4 nanoparticles; graphite nanosheets
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Funding
- Natural Science Foundation of Gansu Province [0803RJZA009, 1010RJZA023]
- Science and Technology Tackle Key Problem Item of Gansu Province [2GS064-A52-036-08]
- Gansu Key Laboratory of Polymer Materials [ZD-04-14]
- State Key Laboratory of Solidification Processing in NWPU [SKLSP201011]
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Nanocomposites composed of polypyrrole (PPy), graphite nanosheets (NanoGs), magnetite (Fe3O4) nanoparticles, have been successfully synthesised with a two-step process. First, we prepared NanoGs/Fe3O4 powder via wet chemical co-precipitation method. Next, pyrrole was polymerised in the suspension of NanoGs/Fe3O4 and then PPy/NanoGs/Fe3O4 nanocomposites were produced. The products were characterised by Fourier-transform infrared spectroscopy, Transmission electron microscopy, Thermogravimetric, conductivity and magnetisation analysis. The result showed that the conductivity of the PPy/NanoGs/Fe3O4 composites, compared with pure PPy, increased dramatically. And the saturation magnetisation of nanocomposites increased with the increase of the volume fraction of the Fe3O4 particles. In addition, according to the thermal gravimetric analysis, compared with PPy, nanocomposites exhibited enhanced thermal stability due to the introduction of NanoGs/Fe3O4. The PPy/NanoGs/Fe3O4 composites show potential applications in electricmagnetic shield materials.
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