Cure Kinetics and Network Development of a Very High Tg Naphthalene-Based Epoxy Amine Network

Samuel Swan, Claudia Creighton, Bekim V Gashi, James Griffin, Russell J. Varley

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)
    1 Downloads (Pure)

    Abstract

    A comparative study of the reaction mechanism, cure kinetics, and network development of two tetrafunctional epoxy resins cured with diamino diphenyl sulphone is presented here. Bis(2,7 diglycidylether naphthalenediol) methane (NNE), a highly aromatic and rigid epoxy resin consisting of glycidyl ether epoxide groups, is compared against tetraglycidyl diaminodiphenyl methane (TGDDM), a more flexible glycidyl amine based epoxy resin. A TGDDM/NNE blend is further prepared to explore the differences between glycidyl ether and glycidyl amine in high glass transition temperature networks. Near-infrared spectroscopy, differential scanning calorimetry, and dynamic mechanical thermal analysis are all used to understand the importance of the rigid bisnaphthalenediol motif and glycidyl ether functional groups with respect to the cure reaction and network transformations. The NNE cures more rapidly during the chemically controlled region, although vitrification and the onset of diffusion-controlled reactions begin earlier, ultimately resulting in lower epoxide conversions. Finally, time–temperature transformation diagrams are constructed to understand the relationship between gelation, vitrification, full cure, and degradation.
    Original languageEnglish
    Pages (from-to)5717-5726
    Number of pages10
    JournalACS Applied Polymer Materials
    Volume3
    Issue number11
    Early online date4 Oct 2021
    DOIs
    Publication statusPublished - 12 Nov 2021

    Funder

    Funding Information: R.J.V. gratefully acknowledges support by the Australian Research Council (DP180100094) and the Office of Naval Research Global (N62909-18-1-2024).

    Keywords

    • epoxy resins
    • TTT diagram
    • reaction kinetics
    • gelation
    • vitrification

    ASJC Scopus subject areas

    • Materials Science(all)

    Fingerprint

    Dive into the research topics of 'Cure Kinetics and Network Development of a Very High Tg Naphthalene-Based Epoxy Amine Network'. Together they form a unique fingerprint.

    Cite this