Regensburg 2004 – wissenschaftliches Programm
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AKB: Biologische Physik
AKB 50: Poster Session "Biological Physics"
AKB 50.30: Poster
Freitag, 12. März 2004, 10:30–13:00, B
In-situ investigation of wood pyrolysis with synchrotron radiation — •Gerald Andreas Zickler1, Cordt Zollfrank2, Manfred Burghammer3, and Oskar Paris1 — 1Max Planck Institute of Colloids and Interfaces, Dept. Biomaterials, Am Mühlenberg 1, D-14476 Potsdam, Germany — 2Friedrich Alexander University Erlangen-Nuremberg, Dept. Materials Science - Glass and Ceramics, Martensstr. 5, D-91058 Erlangen, Germany — 3European Synchrotron Radiation Facility (ESRF), 6 Rue Jules Horowitz, F-38043 Grenoble, France
Advanced cellular ceramics from biologically derived pre-forms have gained considerable interest over the last years. Aim of biomimetic materials synthesis is the transformation of biological tissue into anorganic structures for the production of biomorphous ceramics and composite materials with advanced properties. The present study is focusing on structural aspects of non oxidising pyrolysis of native spruce wood, with the aim to transform the hierarchical structure of wood into oriented Bio-carbon. Microfocus synchrotron radiation is used in combination with a custom made furnace to study wood pyrolysis in situ. Scanning the specimens provides further information on the micrometre scale. Detailed time resolved diffraction data from single wood slices give deeper insight into the kinetics of cellulose degradation, nano pore formation and development of turbostratic carbon at different pyrolysis temperatures. The results are presented and discussed with respect to existing structural models of cellulose degradation from literature.