Functional materials Figure 1. (a) Graphical 3D representation of selected tannin-furanic foams foams structure as derived from x-ray micro tomography; (b) ATR-FTIR spectra of tannin-furanic foams. Poly-furfuryl alcohol and mimosa tannin spectra are shown for comparison; (c) UV Resonant Raman spectra of tannin-furanic foams. Poly-furfuryl alcohol and mimosa tannin spectra are shown for comparison. T. Sepperer1, G. Saccomano2,3, D. E. Bedolla 2,4, R. J.F. Berger5, P. Šket6 E. Longo2, G. A. Zickler5, S. Borhani5, D. Dreossi2, L. Vaccari2, M. E. Musso5 F. D’Amico2 1 Department Green Engineering and Circular Design, Salzburg University of Applied Sciences Kuchl, Austria 2 Elettra - Sincrotrone Trieste S.C.p.A., Trieste, Italy 3 Department of Engineering and Architecture, University of Trieste, Trieste, Italy 4 Area Science Park, Padriciano, Trieste, Italy 5 Department of Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg Salzburg, Austria 6 Slovenian NMR Center, National Institute of Chemistry, Ljubljana, Slovenia e-mail: francesco.damico@elettra.eu; maurizio.musso@plus.ac.at Acknowledgments The authors acknowledge financial support provided by Interreg V-A Italy–Austria 2014–2020 through the Interreg Italy–Austria project ITAT 1023 InCIMA (http://www.elettra.eu/Prj/InCIMa/) and ITAT 1059 InCIMa4 (https://www.incima4.eu/ it/homepage/). The authors acknowledge also the CERIC-ERIC Consortium for providing access to solid state NMR facility (beamtime number 20232113), to the Elettra beamlines IUVS-OFF and SISSI-Bio (beamtime number 20217081). Work in this project was partially funded by the federal state of Salzburg in scope of the project Salzburg Center for Smart Materials 2.0 (SCSM 2.0, funding code 20102/F2300703-KZP). Original paper T. Sepperer et al., Mater. Des. 249, 113538 (2025); DOI:10.1016/j.matdes.2024.113538. Fig. 1 1000 1500 mech. nitric sulf. tannins PFA Absorbance (arb. un.) wavenumber (cm-1) 733 785 961 1015 840 1452 1608 1713 ATR-FTIR 1501 2500 3000 3500 wavenumber (cm-1) 1400 1600 1800 2900 3000 2922 2875 2852 400 600 800 1000 1200 1400 Raman intensity (arb. un.) Raman shift (cm-1) Raman 266 nm tannins nitric mech. sulf. PFA 1360 1288 967 1018 745 781 537 591 1600 1700 1615 Elettra Highlights 2024–2025 31
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