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Wood Science and Technology

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01-07-2013 | Original

Changes in the microstructure of birch wood after hydrothermal treatment

Authors: Vladimirs Biziks, Bruno Andersons, Ļubova Beļkova, Elīna Kapača, Holger Militz

Published in: Wood Science and Technology | Issue 4/2013

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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.

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Title: Changes in the microstructure of birch wood after hydrothermal treatment
Authors: Vladimirs Biziks
Bruno Andersons
Ļubova Beļkova
Elīna Kapača
Holger Militz
Publication date: 01-07-2013
Publisher: Springer-Verlag
Published in: Wood Science and Technology / Issue 4/2013
Print ISSN: 0043-7719
Electronic ISSN: 1432-5225
DOI: https://doi.org/10.1007/s00226-013-0531-1

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