Berlin 2005 – scientific programme

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AKB: Biologische Physik

AKB 30: Biomaterials

AKB 30.5: Talk

Friday, March 4, 2005, 18:30–18:45, TU H2013

Influence of Water on the mechanical Properties of wood investigated by X-ray diffraction — •Ingo Grotkopp¹, Henrik Lemke¹, Klaas Kölln¹, Sergio S. Funari², Martin Domach², and Martin Müller¹ — ¹Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel — ²HASYLAB, DESY, Hamburg

The influence of water on the mechanical behaviour of wood is tremendous. Softwood was investigated by means of X-ray diffraction during tensile tests with different moisture contents. In this way, the influence of the water molecules on the changes in the orientation of the cellulose crystals could be observed. A second mechanism found in these experiments is the deformation of cellulose crystals. Here a comparison between single cells, small wood samples and large timber at different humidity is carried out and first conclusions are developed.