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Gewählte Publikation:

Felhofer, M; Bock, P; Singh, A; Prats-Mateu, B; Zirbs, R; Gierlinger, N.
(2020): Wood Deformation Leads to Rearrangement of Molecules at the Nanoscale
NANO LETT. 2020; 20(4): 2647-2653. FullText FullText_BOKU

Abstract:
Wood, as the most abundant carbon dioxide storing bioresource, is currently driven beyond its traditional use through creative innovations and nanotechnology. For many properties the micro- and nanostructure plays a crucial role and one key challenge is control and detection of chemical and physical processes in the confined microstructure and nanopores of the wooden cell wall. In this study, correlative Raman and atomic force microscopy show high potential for tracking in situ molecular rearrangement of wood polymers during compression. More water molecules (interpreted as wider cellulose microfibril distances) and disentangling of hemicellulose chains are detected in the opened cell wall regions, whereas an increase of lignin is revealed in the compressed areas. These results support a new more "loose" cell wall model based on flexible lignin nanodomains and advance our knowledge of the molecular reorganization during deformation of wood for optimized processing and utilization.
Autor/innen der BOKU Wien:
Bock Peter
Felhofer Martin
Gierlinger Notburga
Singh Adya Prasad
Zirbs Ronald
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Wood
atomic force microscopy (AFM)
Raman spectroscopy
lignin
cell wall


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