IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v617y2023i7962d10.1038_s41586-023-05944-6.html
   My bibliography  Save this article

Catalytic disconnection of C–O bonds in epoxy resins and composites

Author

Listed:
  • Alexander Ahrens

    (Aarhus University)

  • Andreas Bonde

    (Aarhus University)

  • Hongwei Sun

    (Aarhus University)

  • Nina Kølln Wittig

    (Aarhus University)

  • Hans Christian D. Hammershøj

    (Aarhus University)

  • Gabriel Martins Ferreira Batista

    (Aarhus University)

  • Andreas Sommerfeldt

    (Danish Technological Institute)

  • Simon Frølich

    (Danish Technological Institute)

  • Henrik Birkedal

    (Aarhus University)

  • Troels Skrydstrup

    (Aarhus University)

Abstract

Fibre-reinforced epoxy composites are well established in regard to load-bearing applications in the aerospace, automotive and wind power industries, owing to their light weight and high durability. These composites are based on thermoset resins embedding glass or carbon fibres1. In lieu of viable recycling strategies, end-of-use composite-based structures such as wind turbine blades are commonly landfilled1–4. Because of the negative environmental impact of plastic waste5,6, the need for circular economies of plastics has become more pressing7,8. However, recycling thermoset plastics is no trivial matter1–4. Here we report a transition-metal-catalysed protocol for recovery of the polymer building block bisphenol A and intact fibres from epoxy composites. A Ru-catalysed, dehydrogenation/bond, cleavage/reduction cascade disconnects the C(alkyl)–O bonds of the most common linkages of the polymer. We showcase the application of this methodology to relevant unmodified amine-cured epoxy resins as well as commercial composites, including the shell of a wind turbine blade. Our results demonstrate that chemical recycling approaches for thermoset epoxy resins and composites are achievable.

Suggested Citation

  • Alexander Ahrens & Andreas Bonde & Hongwei Sun & Nina Kølln Wittig & Hans Christian D. Hammershøj & Gabriel Martins Ferreira Batista & Andreas Sommerfeldt & Simon Frølich & Henrik Birkedal & Troels Sk, 2023. "Catalytic disconnection of C–O bonds in epoxy resins and composites," Nature, Nature, vol. 617(7962), pages 730-737, May.
  • Handle: RePEc:nat:nature:v:617:y:2023:i:7962:d:10.1038_s41586-023-05944-6
    DOI: 10.1038/s41586-023-05944-6
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41586-023-05944-6
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.

    File URL: https://libkey.io/10.1038/s41586-023-05944-6?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Junheng Zhang & Can Jiang & Guoyan Deng & Mi Luo & Bangjiao Ye & Hongjun Zhang & Menghe Miao & Tingcheng Li & Daohong Zhang, 2024. "Closed-loop recycling of tough epoxy supramolecular thermosets constructed with hyperbranched topological structure," Nature Communications, Nature, vol. 15(1), pages 1-14, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:617:y:2023:i:7962:d:10.1038_s41586-023-05944-6. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.