2/4/2011
Synthesis and electromagnetic interference shielding properties of iron oxide/polypyrrole nanocomposites
(247–253)Polymer  Engineering &  Science 51 #2 (2011)
Azadmanjiri et al of Monash University, Australia prepared magnetic nanocomposites by an in situ oxidative polymerization method to encapsulate different loadings of iron oxide nanoparticles (MNP) by a conductive polymer, polypyrrole (PPy), and were blended into an epoxy resin matrix.  Nanocomposites based on the use of MNP/PPy composite nanoparticles in which the magnetic and conducting phases coexist in intimate contact showed a marked increase in the absorption 10.10 dB at the maximum frequency limit (17–18 GHz) of the instrument, in comparison with the absorption bands for PPy particles only (7.5 dB) or MNP only (2.6 dB) or physical blends of MNP and PPy particles (3.6 dB) in the resin. (RDC 2/2/2011)