Digital Light Processing to Afford High Resolution and Degradable CO 2 -Derived Copolymer Elastomers.

Autor: Poon KC; Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K., Segal M; Thomas Lord Department of Mechanical Engineering & Materials Science, Duke University, Durham, NC 27708, USA., Bahnick AJ; Department of Chemistry, Duke University, Durham, NC 27708, USA., Chan YM; Department of Chemistry, Duke University, Durham, NC 27708, USA., Gao C; Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K., Becker ML; Thomas Lord Department of Mechanical Engineering & Materials Science, Duke University, Durham, NC 27708, USA.; Department of Chemistry, Duke University, Durham, NC 27708, USA.; Departments of Biomedical Engineering and Orthopaedic Surgery, Duke University, Durham, NC 27708, USA., Williams CK; Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Aug 12; Vol. 63 (33), pp. e202407794. Date of Electronic Publication: 2024 Jul 01.
DOI: 10.1002/anie.202407794
Abstrakt: Vat photopolymerization 3D printing has proven very successful for the rapid additive manufacturing (AM) of polymeric parts at high resolution. However, the range of materials that can be printed and their resulting properties remains narrow. Herein, we report the successful AM of a series of poly(carbonate-b-ester-b-carbonate) elastomers, derived from carbon dioxide and bio-derived ϵ-decalactone. By employing a highly active and selective Co(II)Mg(II) polymerization catalyst, an ABA triblock copolymer (M n =6.3 kg mol -1 , Ð M =1.26) was synthesized, formulated into resins which were 3D printed using digital light processing (DLP) and a thiol-ene-based crosslinking system. A series of elastomeric and degradable thermosets were produced, with varying thiol cross-linker length and poly(ethylene glycol) content, to produce complex triply periodic geometries at high resolution. Thermomechanical characterization of the materials reveals printing-induced microphase separation and tunable hydrophilicity. These findings highlight how utilizing DLP can produce sustainable materials from low molar mass polyols quickly and at high resolution. The 3D printing of these functional materials may help to expedite the production of sustainable plastics and elastomers with potential to replace conventional petrochemical-based options.
(© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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