The mechanical properties of wood are closely related to its density (Kollmann 1936). Increasing the density of low-density wood species is thus an attractive method to increase the value of such species (Navi and Sandberg 2012). High-er densities than achievable with traditional densification and an almost complete elimination of the set-recovery are possible using certain chemicals (Neyses et al. 2017). Studying the effects of different chemicals on wood deification is hence of interest (Sandberg et al. 2021). In a screening experiment it was observed that aspen (Populus tremula Michx.) impregnated with sodium hypophosphite (SHP) exhibited a large degree of shrinkage after leaching out the chemical, reaching a density above 1000 kg m-3. This study aims to further investigate the ob-served phenomenon and to combine the process in question with mechanical compression.
Keywords: aspen, wood compression, wood modification
Authors
Alexander Scharf
Luleå University of Technology, Wood Science and Engineering, Forskargatan 1, 93177 Skellefteå, Sweden
Injeong Kim
Luleå tekniska universitet, Sweden
Dick Sandberg
Luleå University of Technology, Forskargatan 1, SE-93187 Skellefteå, Sweden
Benedikt Neyses
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