Since 2016, the Amsterdam Dapperbuurt in the East of Amsterdam, has its own Zero Waste Lab (ZWL), a collection and recycle centre for separated household waste. Drawing on the specific case of wood as a waste-stream, the project Circulair Wood for the Neighbourhood supports the ZWL (initiative of the foundation De Gezonde Stad) realizing two of their ambitions: (A) to transition from recycling to up-cycling; (B) to transition from awareness raising to social engagement and shared ownership. The project is a partnership between the ZWL, the Amsterdam University of Applied Sciences (Research Group Psychology for Sustainable Cities & Research Group Digital Production) and Verdraaid Goed (a Rotterdam based company up-cycling devalued materials by research and design). The project Circulair Wood for the Neighbourhood contains three components/sub-projects, 1) research on the wood waste stream and possibilities for production; (2) research on design possibilities, and (3) research on stakeholder involvement. This is the final report of the sub-project stakeholder involvement led by the research group Psychology for Sustainable Cities. This sub-project specifically examined the psychology behind the decision making process of residents to hand in (or not) separated household wood waste to the ZWL in the neighbourhood of the Dapperbuurt and proposes possible interventions.
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Rotorcraft access panel from recycled carbon PPS - World 's first flying fully recycled thermoplastic composite application in aerospace Artikel is met toestemming overgenomen uit: Composite Solutions & Technopolymers nr 2. 2020
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Wetenschappelijk artikel gepubliceerd met betrekking tot ' rotocraft access panel from recycled carbon PPS 'A rotorcraft access panel is developed and was successfully flight tested. Utilizing a novel recycling route, the panel is lighter, more cost-effective and of recycled thermoplastic composites. https://doi.org/10.1016/j.repl.2020.08.003 (First published by Elsevier, permission to republish in HBO Kennisbank and Narcis: Marc Allen Group)
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The production of denim makes a significant contribution to the environmental impact of the textile industry. The use of mechanically recycled fibers is proven to lower this environmental impact. MUD jeans produce denim using a mixture of virgin and mechanically recycled fibers and has the goal to produce denim with 100% post-consumer textile by 2020. However, denim fabric with 100% mechanically recycled fibers has insufficient mechanical properties. The goal of this project is to investigate the possibilities to increase the content of recycled post-consumer textile fibers in denim products using innovative recycling process technologies.
Recycling of plastics plays an important role to reach a climate neutral industry. To come to a sustainable circular use of materials, it is important that recycled plastics can be used for comparable (or ugraded) applications as their original use. QuinLyte innovated a material that can reach this goal. SmartAgain® is a material that is obtained by recycling of high-barrier multilayer films and which maintains its properties after mechanical recycling. It opens the door for many applications, of which the production of a scoliosis brace is a typical example from the medical field. Scoliosis is a sideways curvature of the spine and wearing an orthopedic brace is the common non-invasive treatment to reduce the likelihood of spinal fusion surgery later. The traditional way to make such brace is inaccurate, messy, time- and money-consuming. Because of its nearly unlimited design freedom, 3D FDM-printing is regarded as the ultimate sustainable technique for producing such brace. From a materials point of view, SmartAgain® has the good fit with the mechanical property requirements of scoliosis braces. However, its fast crystallization rate often plays against the FDM-printing process, for example can cause poor layer-layer adhesion. Only when this problem is solved, a reliable brace which is strong, tough, and light weight could be printed via FDM-printing. Zuyd University of Applied Science has, in close collaboration with Maastricht University, built thorough knowledge on tuning crystallization kinetics with the temperature development during printing, resulting in printed products with improved layer-layer adhesion. Because of this knowledge and experience on developing materials for 3D printing, QuinLyte contacted Zuyd to develop a strategy for printing a wearable scoliosis brace of SmartAgain®. In the future a range of other tailor-made products can be envisioned. Thus, the project is in line with the GoChem-themes: raw materials from recycling, 3D printing and upcycling.
Dit voorstel betreft een onderzoek naar de verschillen in zuiverheid tussen virgin kunststof en post-industrial en post-consumer kunststof-reststromen in relatie tot de inzet van deze materialen bij 3D printen. Thermoplastische kunststoffen zijn in theorie goed te recyclen en opnieuw te gebruiken, bijvoorbeeld in een 3D print proces. In de praktijk blijkt het echter een uitdaging om gerecycled filament te produceren dat geschikt is voor de huidige machine-eisen. De oorsprong van dit project ligt in de gedachte om niet het materiaal aan te passen aan de machine, maar de machine aan het materiaal en hierdoor het gebruik van kunststofrecyclaat in 3D-printen te vergroten. Alvorens dit te kunnen, is meer inzicht in de materiaaleigenschappen nodig. Het doel van dit project is dan ook om de verschillende samenstellingen van kunststof-reststromen in kaart te brengen en hoe dit zich vertaald in mechanische en esthetische kwaliteit ten opzichte van virgin materiaal en wat dit vraagt aan aanpassingen aan 3D printers om deze kunststof-reststromen te kunnen verwerken. Dit onderzoek is een eerste fase in een groter onderzoeksproject. Volgende fasen zullen zich toespitsen op het optimaliseren van productietechnieken voor het printen met gerecycled kunststof en het ontwikkelen van mogelijke toepassingen en bijbehorende circulaire business modellen. Aanleiding voor dit onderzoeksvoorstel is tweeledig. Enerzijds de ervaring van Cre8 dat 3D printen relatief veel kunststof restmateriaal oplevert in de vorm van mislukte prints, proefprints en prototypes met korte levensduur. Passend bij hun duurzame bedrijfsprofiel heeft Cre8 de behoefte om hun eigen reststroom en reststromen uit hun omgeving in te zetten in het productieproces. Anderzijds ziet Refilment zich geconfronteerd met de complexe samenhang tussen de samenstelling van kunststof-reststromen en zijn verwerkingsmogelijkheden (bijvoorbeeld extruder-diameter en verwerkingstemperatuur).
Lectoraat, onderdeel van NHL Stenden Hogeschool
