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Open AccessArticle

Dielectric Properties of All-Organic Coatings: Comparison of PEDOT and PANI in Epoxy Matrices

Institute of Polymer Science and Technology, ICTP-CSIC, C/ Juan de la Cierva 3, 28006 Madrid, Spain
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J. Compos. Sci. 2020, 4(1), 26; https://doi.org/10.3390/jcs4010026
Received: 8 January 2020 / Revised: 5 March 2020 / Accepted: 8 March 2020 / Published: 11 March 2020
(This article belongs to the Special Issue Recent Advances in Conductive Polymer Composites)
The technological demands imposed on dielectrics and electrical insulation materials are being increasing with the transition from traditional to smart grids. Epoxy resin/conductive polymer (CP) blends with high dielectric permittivity have been prepared by means of a straightforward methodology. Poly(3,4-ethylenedioxythiophene) (PEDOT) and polyaniline (PANI), doped with p-tosylate and ammonium peroxide sulfate (APS), respectively, were synthesized and blended with an epoxy matrix. The addition of 3 wt % of PEDOT and PANI results in permittivity values of 68.9 and 9.5, respectively at 0.1 Hz—1300 and 111 times higher than pure resin. Hence, PEDOT is more effective than PANI at improving the permittivity of the epoxy resin. Moreover, the material retains the electrical insulation of the resin and exhibits a slight increase in thermal conductivity. View Full-Text
Keywords: polyaniline (PANI); poly(3,4-ethylenedioxythiophene) (PEDOT); epoxy; dielectric permittivity; smart grid polyaniline (PANI); poly(3,4-ethylenedioxythiophene) (PEDOT); epoxy; dielectric permittivity; smart grid
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Yuste-Sanchez, V.; Gonzalez-Gonzalez, F.; Hoyos, M.; López Manchado, M.A.; Verdejo, R. Dielectric Properties of All-Organic Coatings: Comparison of PEDOT and PANI in Epoxy Matrices. J. Compos. Sci. 2020, 4, 26.

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