Insights into Epoxy Network Nanostructural Heterogeneity using AFM-IR

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    Abstract

    The first direct observation of a chemically heterogeneous nanostructure within an epoxy resin is reported. Epoxy resins comprise the matrix component of many high performance composites, coatings and adhesives, yet the molecular network structure that underpins the performance of these industrially essential materials is not well understood. Internal nodular morphologies have repeatedly been reported for epoxy resins analyzed using SEM or AFM, yet the origin of these features remains a contentious subject, and epoxies are still commonly assumed to be chemically homogeneous. Uniquely, in this contribution we use the recently developed AFM-IR technique to eliminate previous differences in interpretation, and establish that nodule features correspond to heterogeneous network connectivity within an epoxy phenolic formulation
    Original languageEnglish
    Pages (from-to)959–966
    Number of pages7
    JournalA C S Applied Materials and Interfaces
    Volume8
    Issue number1
    Early online date22 Dec 2015
    DOIs
    Publication statusPublished - 22 Dec 2015

    Keywords

    • epoxy resin
    • AFM-IR

    Research Beacons, Institutes and Platforms

    • Advanced materials

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