期刊
POLYMER
卷 46, 期 16, 页码 6090-6095出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2005.04.086
关键词
epoxy matrix; carbon nanotubes; magnetic properties
Epoxy matrix composites have been prepared using as filler different weight fractions (0.03-1 wt%) of CVD grown multi-walled carbon nanotubes (MWCNTs) containing trapped iron nanoparticles. Magnetic characterization performed at room temperature with magnetic field between - 19 and 19 kG shows that the nanocomposites are weakly ferromagnetic at room temperature. An abrupt variation in the dependence of both the coercivity field, B-C, and remanent magnetization, M-R, with the weight fraction of MWCNTs, phi, was found for phi = 0.4%. Results suggest the formation of MWCNTs agglomerates for increasing weight concentrations, in accordance with SEM micrographs. (c) 2005 Elsevier Ltd. All rights reserved.
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