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Dielectric Impedance Studies of Poly(vinyl butyral)-Cenosphere Composite Films

Roy, Aashis S and Saravanan, S and Kishore, K and Ramamurthy, Praveen C and Madras, Giridhar (2014) Dielectric Impedance Studies of Poly(vinyl butyral)-Cenosphere Composite Films. In: POLYMER COMPOSITES, 35 (8). pp. 1636-1643.

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Official URL: http://dx.doi.org/ 10.1002/pc.22817


In the current study, amino silane functionalized cenosphere particles was used as a reinforcing filler in poly(vinyl butyral) matrix and were made by melt blending. The changes observed in the dielectric performance of the composite films with varying weight percentage of cenosphere particle in the matrix were investigated. The dielectric property and impedance spectroscopy were evaluated as a function of applied frequency in the range of 50 Hz to 5 MHz. It is observed that, because of orientation polarization of the PVB polymer, the permittivity and impedance decrease, whereas conductivity increases. Tangent loss graph indicates that the property of the matrix is associated with geometrical fill factor and the lowest quality factor. Therefore, above 10 kHz, these composites can be considered as dielectric loss-less material. (C) 2013 Society of Plastics Engineers

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the WILEY-BLACKWELL, 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 03 Sep 2014 07:54
Last Modified: 03 Sep 2014 07:54
URI: http://eprints.iisc.ac.in/id/eprint/49722

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