Chain-Scission-Induced Intercalation as a Facile Route to Polymer Nanocomposites

Authors

  • D. J. Frankowski,

    1. Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695 (USA)
    2. Current address: Dow Building Solutions Research & Development, Dow Chemical Co., Midland, MI 48674, USA
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  • S. A. Khan,

    1. Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695 (USA)
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  • R. J. Spontak

    1. Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695 (USA)
    2. Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC 27695 (USA)
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  • This study was supported by the STC Program of the National Science Foundation under Agreement No. CHE-9876674.

Abstract

original image

Immiscible polystyrene (PS)/clay nanocomposites undergo intercalation upon spatially tuned and atmosphere-regulated thermal-oxidative chain scission (see figure), with resultant increases in moduli and thermal stability. Shortened PS chains generated by scission predominantly locate in the clay galleries and not in the bulk where they would detrimentally affect mechanical properties.

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