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

Autor: Gil N; Aix-Marseille Univ., CNRS, Institut de Chimie Radicalaire (UMR 7273), Av. Esc. Normendie-Niemen, Case 542, 13397, Cedex 20, France., Thomas C; Université de Haute-Alsace CNRS, IS2M UMR 7361, 68100, Mulhouse, France.; Université de Strasbourg, Strasbourg, France., Mhanna R; Université de Haute-Alsace CNRS, IS2M UMR 7361, 68100, Mulhouse, France.; Université de Strasbourg, Strasbourg, France., Mauriello J; Aix-Marseille Univ., CNRS, Institut de Chimie Radicalaire (UMR 7273), Av. Esc. Normendie-Niemen, Case 542, 13397, Cedex 20, France., Maury R; Aix-Marseille Univ., CNRS, Institut de Chimie Radicalaire (UMR 7273), Av. Esc. Normendie-Niemen, Case 542, 13397, Cedex 20, France., Leuschel B; Université de Haute-Alsace CNRS, IS2M UMR 7361, 68100, Mulhouse, France.; Université de Strasbourg, Strasbourg, France., Malval JP; Université de Haute-Alsace CNRS, IS2M UMR 7361, 68100, Mulhouse, France.; Université de Strasbourg, Strasbourg, France., Clément JL; Aix-Marseille Univ., CNRS, Institut de Chimie Radicalaire (UMR 7273), Av. Esc. Normendie-Niemen, Case 542, 13397, Cedex 20, France., Gigmes D; Aix-Marseille Univ., CNRS, Institut de Chimie Radicalaire (UMR 7273), Av. Esc. Normendie-Niemen, Case 542, 13397, Cedex 20, France., Lefay C; Aix-Marseille Univ., CNRS, Institut de Chimie Radicalaire (UMR 7273), Av. Esc. Normendie-Niemen, Case 542, 13397, Cedex 20, France., Soppera O; Université de Haute-Alsace CNRS, IS2M UMR 7361, 68100, Mulhouse, France.; Université de Strasbourg, Strasbourg, France., Guillaneuf Y; Aix-Marseille Univ., CNRS, Institut de Chimie Radicalaire (UMR 7273), Av. Esc. Normendie-Niemen, Case 542, 13397, Cedex 20, France.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2022 Apr 25; Vol. 61 (18), pp. e202117700. Date of Electronic Publication: 2022 Feb 28.
DOI: 10.1002/anie.202117700
Abstrakt: 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.
(© 2022 Wiley-VCH GmbH.)
Databáze: MEDLINE
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