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Thionolactone as a Resin Additive to Prepare (Bio)degradable 3D Objects via VAT Photopolymerization

Angewandte Chemie International Edition, 2022-04, Vol.61 (18), p.e202117700 [Peer Reviewed Journal]

2022 Wiley-VCH GmbH. ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 1433-7851 ;EISSN: 1521-3773 ;DOI: 10.1002/anie.202117700 ;PMID: 35128770

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  • Title:
    Thionolactone as a Resin Additive to Prepare (Bio)degradable 3D Objects via VAT Photopolymerization
  • Author: Gil, Noémie ; Thomas, Constance ; Mhanna, Rana ; Mauriello, Jessica ; Maury, Romain ; Leuschel, Benjamin ; Malval, Jean-Pierre ; Clément, Jean-Louis ; Gigmes, Didier ; Lefay, Catherine ; Soppera, Olivier ; Guillaneuf, Yohann
  • Subjects: Chemical Sciences ; Polymerization ; Polymers ; Printing, Three-Dimensional
  • Is Part Of: Angewandte Chemie International Edition, 2022-04, Vol.61 (18), p.e202117700
  • Description: Three-dimensional (3D) printing and especially VAT photopolymerization leads to cross-linked materials with high thermal, chemical, and mechanical stability. Nevertheless, these properties are incompatible with requirements of degradability and re/upcyclability. We show here that thionolactone and in particular dibenzo[c,e]-oxepane-5-thione (DOT) can be used as an additive (2 wt %) to acrylate-based resins to introduce weak bonds into the network via a radical ring-opening polymerization process. The low amount of additive makes it possible to modify the printability of the resin only slightly, keep its resolution intact, and maintain the mechanical properties of the 3D object. The resin with additive was used in UV microfabrication and two-photon stereolithography setups and commercial 3D printers. The fabricated objects were shown to degrade in basic solvent as well in a homemade compost. The rate of degradation is nonetheless dependent on the size of the object. This feature was used to prepare 3D objects with support structures that could be easily solubilized.
  • Publisher: Germany: Wiley-VCH Verlag
  • Language: English
  • Identifier: ISSN: 1433-7851
    EISSN: 1521-3773
    DOI: 10.1002/anie.202117700
    PMID: 35128770
  • Source: Hyper Article en Ligne (HAL) (Open Access)
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