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Functionalized Graphene and Carbon Materials as Components of Styrene-Butadiene Rubber Nanocomposites Prepared by Aqueous Dispersion Blending

Authors

  • Stephanie Schopp,

    1. Freiburg Materials Research Center (FMF), University of Freiburg, Freiburg, Germany
    2. Institute for Macromolecular Chemistry, University of Freiburg, Freiburg, Germany
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  • Ralf Thomann,

    1. Freiburg Materials Research Center (FMF), University of Freiburg, Freiburg, Germany
    2. Institute for Macromolecular Chemistry, University of Freiburg, Freiburg, Germany
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  • Karl-Friedrich Ratzsch,

    1. Freiburg Materials Research Center (FMF), University of Freiburg, Freiburg, Germany
    2. Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany
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  • Sabrina Kerling,

    1. Department of Polymer Engineering, University of Bayreuth, Universitätsstraße 30, Bayreuth, Germany
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  • Volker Altstädt,

    1. Department of Polymer Engineering, University of Bayreuth, Universitätsstraße 30, Bayreuth, Germany
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  • Rolf Mülhaupt

    Corresponding author
    1. Freiburg Materials Research Center (FMF), University of Freiburg, Freiburg, Germany
    2. Institute for Macromolecular Chemistry, University of Freiburg, Freiburg, Germany
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Abstract

Emulsifier-free aqueous dispersions of functionalized graphene (FG) represent key intermediates for the production of rubber composites, enabling uniform dispersion of predominantly single FG sheets. In this comparative study on styrene-butadiene rubber (SBR) composites with conventional and novel carbon-based fillers the influence of filler type, content, and dispersion process is examined. For SBR/FG nanocomposites two aqueous dispersion blend strategies based on thermally and chemically reduced graphite oxide are explored. Electron microscopy and X-ray tomography confirm the highly effective FG dispersion in SBR leading to simultaneous improvement of mechanical properties, electrical conductivity, and gas barrier resistance.mame201300127-gra-0001

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