Size Effect on Hygroscopicity of Waterlogged Archaeological Wood by Simultaneous Dynamic Vapour Sorption

Hygroscopicity is one of the most important properties wood and plays a decisive role in its dimensional stability. In this context, conservation plans for waterlogged archaeological (WAW) relevant artefacts must be created. The size sample required moisture sorption assessment may affect results (and thus perception of) hygroscopicity testing artefact. Herein, to investigate effects on WAW as measured via dynamic vapour (DVS), typical recent (i.e., sound) are processed into four differently sized samples, ranging thickness from 200 mesh millimetre. equilibrium contents (EMCs) samples simultaneously using simultaneous DVS. isotherms show that EMC values at each relative humidity increase decreases, with superfine powder achieving highest all samples. Although has higher than wood, effect hygroscopic surprisingly not pronounced wood. addition, hysteresis between different sizes significantly smaller reference Furthermore, regarding standard deviations parameters obtained Guggenheim Anderson de Boer Hailwood–Horrobin models, much those This further verifies disappearance WAW.