Controlling amount and location of water at high well-defined moisture states by targeted wood modification

Water is an essential requirement for fungal degradation, but the exact role of water is not fully understood (Brischke & Alfredsen 2020). Fungal hyphae need capillary water (Rayner & Boddy 1988), but sufficient space for water within cell walls also appear to be a requirement (Thybring 2013, Zelinka et al. 2015). It is thus likely that fungal degradation of wood depends not only on the absolute value of the moisture content, but also on the location of the water within the wood structure. In this study, we explored the possibility to generate several moisture states and distributions of water within the wood structure by targeted modification in combination with precise control of the relative humidity/water potential.

Keywords: wood modification, moisture content, moisture sorption

Authors

Maria Fredriksson
Lund University, Sweden

Ramunas Digaitis
Danish Technological Institute, Denmark

Jonas Engqvist
Lund University, Sweden

Emil E Thybring
University of Copenhagen, Denmark

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