Dielectric properties of conductive polypyrrole/ethylene vinyl acetate copolymer blends

Abstract

Polymer blends of polypyrrole (PPy)-conducting particles dispersed in poly(ethyleneco-vinyl acetate) (EVA) matrix were prepared. The dielectric properties were determined, and we have examined how these properties depend on the relative concentration of the conducting (PPy) and dielectric (EVA) blends. The dielectric constant increases appreciably by increasing the PPy contents in the blend matrix. A previous proposed model by Tsangaris et al, for the calculation of effective dielectric constant, was tested and approaches the experimental values more closely for low PPy contents.

Structural and Thermal Analysis of Carbon Nano-Particles/Polypyrrole/Poly (Ethylene – Co – Vinyl Acetate) Composites

“…Low cost, excellent conductivity, high physicochemical stability are some features that enable Polypyrrole (PPy) to be one of the most important conductive polymer which are applied as batteries, conductive fibers, gas sensors, super capacitors and photovoltaic cells [6,7]. Nevertheless, PPy suffers from poor strength and insolubility; therefore PPy is included in blend or composite preparation to overcome these limitations [8].…”