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Styrene–butadiene rubber/cellulose II/clay nanocomposites prepared by cocoagulation—mechanical properties

Authors

  • Carmen Lane Giri Zine,

    1. Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, PO Box 68525, Centro de Tecnologia, Bloco J, 21945-970 Rio de Janeiro, Brazil
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  • Alberto Justino da Conceição,

    1. Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, PO Box 68525, Centro de Tecnologia, Bloco J, 21945-970 Rio de Janeiro, Brazil
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  • Leila L. Y. Visconte,

    1. Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, PO Box 68525, Centro de Tecnologia, Bloco J, 21945-970 Rio de Janeiro, Brazil
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  • Edson Noriyuki Ito,

    1. Universidade Federal do Rio Grande do Norte, Brazil
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  • Regina C. R. Nunes

    Corresponding author
    1. Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, PO Box 68525, Centro de Tecnologia, Bloco J, 21945-970 Rio de Janeiro, Brazil
    • Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, PO Box 68525, Centro de Tecnologia, Bloco J, 21945-970 Rio de Janeiro, Brazil
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Abstract

In this work, nanocomposites of styrene butadiene rubber (SBR), cellulose II, and clay were prepared by cocoagulation of SBR latex, cellulose xanthate, and clay aqueous suspension mixtures. The incorporated amount of cellulose II was 15 phr, and the clay varied from 0 to 7 phr. The influence of cellulose II and clay was investigated by rheometric, mechanical, physicochemical, and morphological properties. From the analysis of transmission electron microscopy (TEM), dispersion in nanometric scale (below 100nm) of the cellulosic and mineral components throughout the elastomeric matrix was observed. XRD analysis suggested that fully exfoliated structure could be obtained by this method when low loading of silicate layers (up to 5 phr) is used. The results from mechanical tests showed that the nanocomposites presented better mechanical properties than SBR gum vulcanizate. Furthermore, 5 phr of clay is enough to achieve the best tensile properties. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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