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Recyclable photoresins for light-mediated additive manufacturing towards Loop 3D printing

Author

Listed:
  • Xabier Lopez de Pariza

    (Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU)

  • Oihane Varela

    (Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU)

  • Samantha O. Catt

    (Institute for Molecular Systems Engineering and Advanced Materials (IMSEAM)
    Organic Chemistry Institute (OCI))

  • Timothy E. Long

    (School of Molecular Science and Biodesign Center for Sustainable Macromolecular Materials and Manufacturing)

  • Eva Blasco

    (Institute for Molecular Systems Engineering and Advanced Materials (IMSEAM)
    Organic Chemistry Institute (OCI))

  • Haritz Sardon

    (Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU)

Abstract

Additive manufacturing (AM) of polymeric materials enables the manufacturing of complex structures for a wide range of applications. Among AM methods vat photopolymerization (VP) is desired owing to improved efficiency, excellent surface finish, and printing resolution at the micron-scale. Nevertheless, the major portion of resins available for VP are based on systems with limited or negligible recyclability. Here, we describe an approach that enables the printing of a resin that is amenable to re-printing with retained properties and appearance. To that end, we take advantage of the potential of polythiourethane chemistry, which not only permits the click reaction between polythiols and polyisocyanates in the presence of organic bases, allowing a fast-printing process but also chemical recycling, reshaping, and reparation of the printed structures, paving the way toward the development of truly sustainable recyclable photoprintable resins. We demonstrate that this closed-loop 3D printing process is feasible both at the macroscale and microscale via DLP or DLW, respectively.

Suggested Citation

  • Xabier Lopez de Pariza & Oihane Varela & Samantha O. Catt & Timothy E. Long & Eva Blasco & Haritz Sardon, 2023. "Recyclable photoresins for light-mediated additive manufacturing towards Loop 3D printing," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41267-w
    DOI: 10.1038/s41467-023-41267-w
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    References listed on IDEAS

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    1. Martin Regehly & Yves Garmshausen & Marcus Reuter & Niklas F. König & Eric Israel & Damien P. Kelly & Chun-Yu Chou & Klaas Koch & Baraa Asfari & Stefan Hecht, 2020. "Xolography for linear volumetric 3D printing," Nature, Nature, vol. 588(7839), pages 620-624, December.
    2. Frederik Kotz & Karl Arnold & Werner Bauer & Dieter Schild & Nico Keller & Kai Sachsenheimer & Tobias M. Nargang & Christiane Richter & Dorothea Helmer & Bastian E. Rapp, 2017. "Three-dimensional printing of transparent fused silica glass," Nature, Nature, vol. 544(7650), pages 337-339, April.
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