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Microwave absorption behaviors of polyaniline nanocomposites containing TiO2 nanoparticles
Sook Wai Phang,Masato Tadokoro,Jiro Watanabe,Noriyuki Kuramoto 한국물리학회 2008 Current Applied Physics Vol.8 No.3,4
As nanomaterial possessing moderate conductivity and dielectric property, novel hexanoic acid doped polyaniline (PAni) nanocom-posites containing TiO2 absorption properties of PAni nanocomposites were investigated. The resulted nanorods/tubes in SEM images clearly showed that poly-merization proceeded in micelle/water interface through elongation. The nanocomposites synthesized at 0.C resulted in large number ofnanorods/tubes compared with those synthesized at 25.C. The nanocomposites synthesized at 0.C possess higher permittivity and het-erogeneity, hence will give rise to good microwave absorption property (>99.0% power absorption) in the frequency range of 1013 GHzcompared with 25.C. Among all nanocomposites prepared, PAni/HA/TiO2 with highest permittivity, heterogeneity and loss tangent hasachieved maximum reection loss of 31 dB (>99.9% power absorption) at 10 GHz.