期刊
INTERNATIONAL WOOD PRODUCTS JOURNAL
卷 6, 期 1, 页码 21-26出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/2042645314Y.0000000083
关键词
Thermal wood modification; Process conditions; Wood composition; EMC; Durability
资金
- European Cooperation in Science and Technology (COST) [FP1303]
A large number of different heating technologies has been put into use for industrial scale thermal modification of wood. A useful classification of these processes is by the level of water vapour pressure, which ranges from vacuum to high saturated steam pressures. Only high water vapour pressure systems can maintain a finite moisture content during the heat treatment, but little is known about the water vapour pressure dependence of the thermal modification chemistry and the resulting modified wood properties. It is concluded from our analysis that the thermal wood reaction chemistry at the molecular functional group level is quite independent of the process and wood species. Wood properties that are strongly determined by wood chemical composition, such as the fungal durability and the equilibrium moisture content (EMC), can hence be equally achieved by all processes and for all wood species. This finding cannot be transferred to every other thermally modified wood property.
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