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Electrical and mechanical characterization of a flexible conducting composite

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Abstract

Composite films made of poly(vinylidene fluoride) (PVDF) and conducting particles of carbon black (CB) were prepared using a hot press. Using different volume fractions of CB filler, electrical properties of the samples were analyzed with current–voltage (I × V) measurements and impedance spectroscopy. To help the discussion, percolation theory and simulation circuits based on Colie diagrams were used. The percolation threshold was found at 3 vol% of CB. At these volume fractions of filler, scanning electron microscopy (SEM) images showed connected particles in the polymer matrix, while in the higher volume content of filler, the particles started to form clusters. Furthermore, it was observed that increasing volume fractions up to 3 vol%, the Young’s modulus and the tensile strength of the composite film were higher than that of the pure polymer, although the rupture strain was decreased. Composite films with 3 vol% of CB showed optimized electrical and mechanical properties and may be useful as an electrostatic dissipater.

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Acknowledgments

Thank you to Fundação de Amparo à Pesquisa do Estado de Mato Grosso (FAPEMAT) for the financial support. WKS also thanks Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) (CEPID 2013/07296-2 and INCTMN 2008/57872-1) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (INCTMN 573636/2008-7).

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Authors and Affiliations

  1. Instituto de Ciências Exatas e da Terra, Universidade Federal de Mato Grosso, CEP 78600-00, Barra do Garças, MT, Brazil

    W. D. S. Deniz, E. A. Sousa, E. P. S. Arlindo & G. C. Fuzari Jr.

  2. Departamento de Física e Química, Universidade Estadual Paulista, CEP 15385-000, Ilha Solteira, SP, Brazil

    W. K. Sakamoto

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  1. W. D. S. Deniz
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  2. E. A. Sousa
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  3. E. P. S. Arlindo
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  4. W. K. Sakamoto
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  5. G. C. Fuzari Jr.
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Correspondence to G. C. Fuzari Jr..

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Deniz, W.D.S., Sousa, E.A., Arlindo, E.P.S. et al. Electrical and mechanical characterization of a flexible conducting composite. Polym. Bull. 72, 1787–1797 (2015). https://doi.org/10.1007/s00289-015-1371-y

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  • DOI: https://doi.org/10.1007/s00289-015-1371-y

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