期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 77, 期 -, 页码 87-95出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2015.06.019
关键词
Anisotropy; Electrical properties; Directional orientation; Silver nanowire
资金
- National Natural Science Foundation of China [51373187, 11372312]
Aligned Fe3O4@Ag-nanowire (Ag-NW)/poly(vinyl alcohol) (PVA) nanocomposite films are prepared via a magnetic field-assisted method under a low magnetic field (B < 0.1 T) induction. The effects of the mass ratio (MR) of Fe3O4 to Ag-NWs and the Ag-NW content are systematically studied on the composite electrical conductivity (EC). The preferential alignment of Ag-NWs brings about a significant increase in the EC of the oriented composite in the parallel direction along the magnetic field. The optimal MR is determined to be equal to 0.15 at which the random composite has a good EC meanwhile the oriented composite shows a good response to the applied magnetic field. The oriented composite with the 20 wt% Ag-NWs shows a high EC anisotropy of ca. 6.6 and a very high EC of 4500 S/cm via the external magnetic field. In addition, the introduction of Ag-NWs leads to an obvious improvement in the thermal stability of PVA composites. (C) 2015 Elsevier Ltd. All rights reserved.
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