Journal
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
Volume 103, Issue 2, Pages 140-144Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0921-5107(03)00177-6
Keywords
dielectric behavior; carbon nanotube; composite; percolation
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A three-phase composite with multi-walled carbon nanotubes (MWNTs) and BaTiO3 particles embedded into polyvinylidene fluoride was prepared by using a simple blending and hot-molding technique. The dielectric measurement results show that the effective dielectric constant of the composite is slightly dependence on the frequency below 1 MHz but increases rapidly with the MWNTs concentration when the concentration is very close to the percolation threshold. The temperature has a little effect on the variation of the dielectric behavior. The percolation theory is used to explain the experimental results. (C) 2003 Elsevier B.V. All rights reserved.
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