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Morphology and structure of nylon-6 crystallized in epoxy resin matrix

Authors

  • Aniket Vyas,

    1. Material Science and Engineering Program, Department of Aerospace Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
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    • These authors contributed equally.

  • Jude O. Iroh

    Corresponding author
    1. Material Science and Engineering Program, Department of Aerospace Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio
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    • These authors contributed equally.


  • Author Contributions: The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript.

ABSTRACT

Nylon-6/epoxy resin composite with multiphase morphology has been successfully prepared via polymerization of caprolactam in N-methylpyrrolidone using N-acetyl caprolactam as the initiator. This was followed by reactive blending of appropriate amount of the plastic with epoxy resin. The structure of nylon-6 prepared by solution polymerization is predominantly α [200, 020]α crystalline form with γ [002]γ crystalline form as the minor phase. Subsequently, nylon-6/epoxy composite was prepared at 150°C in a Teflon mold. A remarkable heterogeneous morphology of the fractured surface of the film was observed, consisting of multilayered fiber-like crystals encapsulated in the epoxy resin matrix. Close inspection of the morphology of the composite revealed a preference of nylon-6 to crystallize in the crevices and cracks created in glassy epoxy matrix during processing. The crystals seem to nucleate spontaneously and grow radially into spherulites. POLYM. ENG. SCI., 54:858–866, 2014. © 2013 Society of Plastics Engineers

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