| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Reineke, Theresa M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Mechanical Recycling of 3D-Printed Thermosets for Reuse in Vat Photopolymerizationcitations
- 2023Radical ring-opening polymerization of sustainably-derived thionoisochromanonecitations
- 2023Biobased Copolymers via Cationic Ring-Opening Copolymerization of Levoglucosan Derivatives and ϵ-Caprolactonecitations
- 2023Biobased and degradable thiol-ene networks from levoglucosan for sustainable 3D printingcitations
- 2021Degradable polyanhydride networks derived from itaconic acidcitations
- 2021Structural Basis for the Different Mechanical Behaviors of Two Chemically Analogous, Carbohydrate-Derived Thermosetscitations
- 2021Sustainable advances in SLA/DLP 3D printing materials and processescitations
- 2021Regioregular Polymers from Biobased (R)-1,3-Butylene Carbonatecitations
- 2019Properties of Chemically Cross-Linked Methylcellulose Gelscitations
- 2018Isothermal Titration Calorimetry for the Screening of Aflatoxin B1 Surface-Enhanced Raman Scattering Sensor Affinity Agentscitations
- 2016Acrylic Triblock Copolymers Incorporating Isosorbide for Pressure Sensitive Adhesivescitations
- 2015Isosorbide-based polymethacrylatescitations
- 2014Degradable thermosets from sugar-derived dilactonescitations
- 2012Glucose-functionalized, serum-stable polymeric micelles from the combination of anionic and RAFT polymerizationscitations
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article
Mechanical Recycling of 3D-Printed Thermosets for Reuse in Vat Photopolymerization
Abstract
<p>Additive manufacturing, otherwise known as three-dimensional (3D) printing, is a rapidly growing technique that is increasingly used for the production of polymer products, resulting in an associated increase in plastic waste generation. Waste from a particular class of 3D-printing, known as vat photopolymerization, is of particular concern, as these materials are typically thermosets that cannot be recycled or reused. Here, we report a mechanical recycling process that uses cryomilling to generate a thermoset powder from photocured parts that can be recycled back into the neat liquid monomer resin. Mechanical recycling with three different materials is demonstrated: two commercial resins with characteristic brittle and elastic mechanical properties and a third model material formulated in-house. Studies using photocured films showed that up to 30 wt% of the model material could be recycled producing a toughness of 2.01 ± 0.55 MJ/m<sup>3</sup>, within error of neat analogues (1.65 ± 0.27 MJ/m<sup>3</sup>). Using dynamic mechanical analysis and atomic force microscopy-based infrared spectroscopy, it was determined that monomers diffuse into the recycled powder particles, creating interpenetrating networks upon ultraviolet (UV) exposure. This process mechanically adheres the particles to the matrix, preventing them from acting as failure sites under a tensile load. Finally, 3D-printing of the commercial brittle material with 10 wt% recycle content produced high quality parts that were visually similar. The maximum stress (46.7 ± 6.2 MPa) and strain at break (11.6 ± 2.3%) of 3D-printed parts with recycle content were within error the same as neat analogues (52.0 ± 1.7 MPa; 13.4 ± 1.8%). Overall, this work demonstrates mechanical recycling of photopolymerized thermosets and shows promise for the reuse of photopolymerized 3D-printing waste.</p>