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Nitrile rubber/organomontmorillonite nanocomposites produced by solution and melt compounding: Effect of the polarity of the quaternary ammonium intercalants

Authors

  • Bluma G. Soares,

    Corresponding author
    1. Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Bloco J, Ilha do Fundão, Rio de Janeiro, RJ, Brazil 21945-970
    • Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Bloco J, Ilha do Fundão, Rio de Janeiro, RJ, Brazil 21945-970
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  • Marlucy de Oliveira,

    1. Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Bloco J, Ilha do Fundão, Rio de Janeiro, RJ, Brazil 21945-970
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  • Soraia Zaioncz,

    1. Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Bloco J, Ilha do Fundão, Rio de Janeiro, RJ, Brazil 21945-970
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  • Ana C. O. Gomes,

    1. Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Bloco J, Ilha do Fundão, Rio de Janeiro, RJ, Brazil 21945-970
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  • Adriana A. Silva,

    1. Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Bloco J, Ilha do Fundão, Rio de Janeiro, RJ, Brazil 21945-970
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  • Kelly S. Santos,

    1. Instituto de Química, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Porto Alegre, RS, Brazil 91501-970
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  • Raquel S. Mauler

    1. Instituto de Química, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Porto Alegre, RS, Brazil 91501-970
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Abstract

A comparative study of the development of nitrile rubber (NBR) based nanocomposites was performed; two organomontmorillonites (Cloisite 15A and Cloisite 30B) and two procedures for clay dispersion (melt blending and solution intercalation) were used. The nanocomposites were cured with a system based on dicumyl peroxide in the presence of m-phenylenebismaleimide as a coagent for curing. The dispersion of the organoclay inside the NBR matrix was investigated with transmission electron microscopy and X-ray diffraction. All the cured systems displayed a combination of intercalated, partially exfoliated clay platelets and confined, deintercalated clay; the degree of dispersion depended on the amount of clay, the type of intercalant, and the intercalation procedure. The highest amount of intercalated/exfoliated clay was obtained with a previous dispersion of the clay (Cloisite 30B) in an NBR solution. All the nanocomposites presented outstanding tensile strength and creep response, and this indicated a reinforcing effect of the layered silicates. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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