Berlin 2005 – wissenschaftliches Programm

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AKB: Biologische Physik

AKB 100: Poster Session I

AKB 100.10: Poster

Samstag, 5. März 2005, 16:45–18:45, Poster TU D

Pyrolysis of wood - in-situ synchrotron scattering and nanoindentation experiments — •Gerald A. Zickler¹, Sérgio S. Funari², Thomas Schöberl³, and Oskar Paris¹ — ¹Max Planck Institute of Colloids and Interfaces, Dept. Biomaterials, Am Mühlenberg 1, D-14476 Potsdam, Germany — ²Hamburger Synchrotronstrahlungslabor, HASYLAB, DESY, Notkestr. 85, D-22603 Hamburg, Germany — ³Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, University of Leoben, Jahnstr. 12, A-8700 Leoben, Austria

The present study is focusing on structural and mechanical aspects of non-oxidising pyrolysis of native spruce wood, with the aim to transform the hierarchical structure of wood into nano-structured oriented carbon. Synchrotron radiation was used in combination with a custom made furnace to study wood pyrolysis in situ. Detailed time resolved small-angle and wide-angle scattering data from single wood slices provided deeper insight into the kinetics of cellulose degradation for temperatures up to 400^∘C. Furthermore nanoindentation was applied to characterise changes of cell wall hardness, Young’s modulus, elastic and plastic parameters of the carbonaceous residue up to 2400^∘C.