Simultaneous treatment with oil heat and densification on physical properties of Populus × Canadensis wood

Samples of wood from Populus × canadensis (9,5 % moisture) were treated with olive oil at 195 °C simultaneously 15 or 30 compression densification, and the results compared samples subjected to heat treatment without control samples. The density increased by 18 %, 43 1,5 respectively, barely changed over six subsequent months stored inside laboratory room (at approximately 65 RH, 20 °C). This was due fact that slight weight increment caused additional moisture content offset increase in volume springback effect. When atmospheres different relative humidities, stabilised same time as samples, although had a significantly lower absorption than It also observed hygroscopic shrinkage densification half those initial partially lost result springback: 3 first humidity an 4 second 85 RH. Once this latter been attained, no new losses observed. ageing used loss densest