Regensburg 2010 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 5: Posters: Biopolymers and Biomaterials
BP 5.11: Poster
Montag, 22. März 2010, 17:15–20:00, Poster B1
The Nanostructure of the Tracheid Wood Cell Wall — •Malte Ogurreck1, Pekka Saranpää2, Manfred Burghammer3, Sebastian Schoeder3, Christina Krywka4, and Martin Müller1,4 — 1GKSS Research Centre Geesthacht, Germany — 2The Finnish Forest Research Institute METLA, Vantaa, Finland — 3ESRF, Grenoble, France — 4University of Kiel, Germany
Tracheid wood cell walls are mainly composed of cellulose nanocrystals (microfibrils) embedded in an amorphous matrix. These microfibrils are helically wound around the cell axis and are arranged in several layers.
While the structure of tracheid wood cells has been a research topic for many decades now and the structure on the biological and molecular level are well known, the detailed structure on intermediate length scales is still largely unknown.
Here, we present results of nanodiffraction experiments carried out at the nano-/microfocus beamline ID13, ESRF. Tracheid cross sections have been scanned with a position resolution of down to 200 nm. These detailed diffraction data allows us to map the local structure in the cell wall with a very high resolution.
The comparison of wood grown under normal conditions with wood grown using special treatments (irrigation, fertilizers) allows to reach conclusions about how environmental influences affect the structure of wood.