"Hot Nanotechnology Papers": Microscopic and dielectric studies of ZnO nanoparticles loaded in ortho-chloropolyaniline nanocomposites

Title of the paper:Microscopic and dielectric studies of ZnO nanoparticles
loaded in ortho-chloropolyaniline nanocomposites

Authors:Aashish Roy • Ameena Parveen • Raghunandan Deshpande • Ravishankar Bhat •
Anilkumar Koppalkar

University/Institute:Department of Materials Engineering, Indian Institute of
Science, Bangalore, Karnataka, India

Abstracts:We have studied the preparation of zinc oxide nanoparticles loaded in various weight percentages in ortho-chloropolyaniline by in situ polymerization method. The length of the O-chloropolyaniline tube is found to be 200 nm and diameter is about 150 nm wherein the embedded ZnO nanoparticles is of 13 nm as confirmed from scanning electron microscopy as well as transmission electron microscopy characterizations. The presence of the vibration
band of the metal oxide and other characteristic bands confirms that the polymer nanocomposites are characterized by their Fourier transmission infrared spectroscopy. The X-ray diffraction pattern of nanocomposites reveals their polycrystalline nature. Electrical
property of nanocomposites is a function of the filler as well as the matrix. Cole–Cole plots reveal the presence of well-defined semicircular arcs at high frequencies which are attributed to the bulk resistance of the material. Among all nanocomposites, 30 wt%
shows the low relaxation time of 151 s, and hence it has high conductivity.

Links to the paper (link to the journal webpage):http://link.springer.com/article/10.1007/s11051-012-1337-z

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Tags: HNP2011

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