Role of Interface Rheology in Altering the Onset of Co-Continuity in Nanoparticle-Filled Polymer Blends

Authors

  • Giovanni Filippone,

    Corresponding author
    1. Dipartimento di Ingegneria dei Materiali e della Produzione (DIMP), UdR INSTM, Università di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy
    • Dipartimento di Ingegneria dei Materiali e della Produzione (DIMP), UdR INSTM, Università di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy Fax: +39 81 768 2404.
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  • Giovanni Romeo,

    1. Dipartimento di Scienze Farmaceutiche, Università di Salerno, Via Ponte Don Melillo, 84084 Fisciano (Salerno), Italy
    2. Instituto Italiano di Tecnologia (IIT) @ CRIB, P.le Tecchio 80, 80125 Napoli, Italy
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  • Domenico Acierno

    1. Dipartimento di Ingegneria dei Materiali e della Produzione (DIMP), UdR INSTM, Università di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy
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Abstract

Developing co-continuity in a polymer blend determines a multiphase system with enhanced properties which originate from the synergism of its constituents. Filling a blend with nanoparticles is a promising route to guide its morphology and eventually affect the co-continuity transition. We add different kinds of nanoparticles to an HDPE/PEO blend to study how they affect the morphology of the blend as function of their surface properties and form factor. We find that PEO drop size is drastically reduced by particles adsorbed at the HDPE/PEO interface. However, we show that a drastic shifting of the co-continuity threshold may only be achieved when particles affect the rheology of the interface.

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