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DTSTART;TZID=Europe/Paris:20261127T100000
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DTSTAMP:20260404T161114
CREATED:20260313T084204Z
LAST-MODIFIED:20260313T084353Z
UID:10000076-1795773600-1795777200@remade-project.eu
SUMMARY:In situ characterization of food and plastic waste carbonized under pressure
DESCRIPTION:Zoom webinar | Replay on Youtube (soon)\nFrancesco D’ACIERNO \nKU Leuven\, Belgium \n  \nIn situ investigations of soft-matter carbonization are essential to connect processing conditions with final carbon structure and function. Here we report time-resolved structural and chemical monitoring of autogenic pressure carbonization of non-recyclable commodity plastics performed directly inside sealed quartz capillaries. We also treated food waste-derived sugars through alkaline and neutral hydrothermal carbonization in water and ionic liquids. By combining synchrotron-grade WAXS and SAXS with in-situ Raman spectroscopy\, and supporting ex-situ XPS surface analysis\, we follow the transformation from disordered organic networks to carbonaceous solids under self-generated pressure in real time.\n\nSAXS reveals the emergence and coarsening of nanoscale porosity and density inhomogeneities early in the heating profile\, while WAXS captures the progressive development of short-range aromatic stacking (broadening and gradual appearance of 002-type scattering). Raman spectra recorded concurrently track the evolution of sp2 domains and defect populations via the D and G bands\, allowing kinetic comparison between plastic and sugar routes. Ex-situ XPS indicates contrasting heteroatom retention: hydrothermal-derived chars retain higher oxygen functionality\, whereas plastic-derived carbons show lower O/C ratios and more pronounced graphitization signatures at equivalent processing stages.\n\nTogether the multimodal dataset supports a unifying mechanism in which precursor chemistry controls the balance between intramolecular rearrangement and intermolecular crosslinking\, setting the pathway for pore formation and aromatic ordering under pressure.
URL:https://remade-project.eu/index.php/event/in-situ-characterization-of-food-and-plastic-waste-carbonized-under-pressure/
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://remade-project.eu/wp-content/uploads/2026/03/261127_ReMade@ARI-seminar_DACIERNO.jpg
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