Author:
Biziks Vladimirs,Van den Bulcke Jan,Grinins Juris,Militz Holger,Andersons Bruno,Andersone Ingeborga,Dhaene Jelle,Van Acker Joris
Abstract
AbstractThe microstructural changes in a selection of softwoods and hardwoods resulting from thermo-hydro treatment (THT) at 160°C were examined by means of a state-of-the-art micro X-ray computed tomography. A dedicated X-ray scanning and volumetric processing protocol was developed. All reconstructed volumes had an approximate voxel pitch between 0.8 and 1.2 μm3. The microstructures of the same needle-shaped specimens before and after THT were visualized, and the individual parameters (maximum opening and lumen volume) for various cell types were quantified and compared. The highest values of substance volume were recorded for the ash sapwood (81%) and spruce specimens (72%). After THT, a significant correlation was found between the mass loss determined by gravimetry and the X-ray volume loss. The largest change occurred in the lumen volume of several tissue components, such as libriform fibers, tracheids, and ray parenchyma. The average aspen fiber volume reduction after THT was 31%, a value 2.6 times higher than the volume reduction of the average vessels. The porosity of ash sapwood increased from 41 to 56%, whereas the porosity of birch decreased from 34 to 29%.
Reference58 articles.
1. aided correction for ray computed tomography;De Witte;Opt Soc Am A Opt Image Sci Vis,2009
2. den Practical use of the modified Bronnikov algorithm in micro Interact;Boone;Nucl Instrum Methods Phys Res Sect Mater Atoms,2009
3. Bilateral filtering for gray and color images Proceedings of the on Bombay India;Thomasi;IEEE International Conference Computer Vision,1998
4. Heat behaviour ofPinus sylvestrisandBetula pendulaat Fiber;Zaman;Wood Sci,2000
5. Analytical pyrolysis as an instrument to study the chemical transformations of hygrothermally modified wood;Grinins;Anal Appl Pyrol,2013
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