Changes in the microstructure of birch wood after hydrothermal treatment |
| |
Authors: | Vladimirs Biziks Bruno Andersons Ļubova Beļkova Elīna Kapača Holger Militz |
| |
Affiliation: | 1. Latvian State Institute of Wood Chemistry, 27 Dzerbenes str., Riga, 1006, Latvia 2. Wood Biology and Wood Products, Burckhardt-Institute, Georg-August University, Büsgenweg 4, 37077, G?ttingen, Germany
|
| |
Abstract: | Birch wood (Betula pendula) samples were treated in a thermal regime (140, 160, 180 °C) for 1 h and investigated by means of scanning electron microscopy (SEM). SEM microimages of the wood cross-section were taken from one and the same place before and after the thermal treatment (magnification 100–2,000×). The results of measurements of areas and linear sizes of the birch wood cells show significant changes, which depend on the thermal treatment conditions and the type of the cell: libriform, tracheid, vessel and ray. After the treatment at 180 °C, the integrity of wood morphological structure begins to break up. Voids and cracks are formed between fibres, thus leading to a decline in the mechanical properties of the wood. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|