Hot water extraction (HWE) treatment changes the physicochemical properties of the wood, including hygroscopic properties. HWE treatment decreases the hydroxyl (OH) accessibility of the wood, but the relevance of other mechanisms that change hygroscopic properties are not fully understood. Recently it has been confirmed that besides density of accessible sorption sites, additional mechanisms influence the sorption behaviour of thermally modified wood (Altgen et al., 2016, 2018; Borrega and Kärenlampi, 2010; Wentzel et al., 2018). Our research investigates the effect of first drying after HWE treatment on OH accessibility and sorption properties of the wood.
Keywords: wood-water relations, cellulose aggregation, hydrogen-deuterium exchange
Authors
Suvi Kyyrö
Aalto University, Finland
Michael Altgen
Aalto University, Finland
Hanna Seppäläinen
Aalto University, Finland
Tiina Belt
Natural Resources Institute Finland, Finland
Lauri Rautkari
Aalto University, Finland
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