Effect of pressurized hot water extraction and esterification on the moisture properties and decay resistance of Scots pine (<i>Pinus sylvestris</i> L.) sapwood

Abstract Pressurized hot water extraction (HWE) treatment has the benefit of simultaneous hemicellulose-based carbohydrates and modification solid phase, but it does not drastically improve wood durability. However, removing hemicelluloses from by HWE creates water-filled spaces in cell walls which could be filled with agent order to properties wood. Without drying, can added into saturated via diffusion. The esterification citric acid (CA) improves resistance biological deterioration increases brittleness. combining CA additional chemicals that form links mitigate This study investigated as a method for modifying treated solution (4% w/v) was applied at 120 °C 3 h Scots pine ( Pinus sylvestris L.) sapwood specimens. specimens were further modified diffusion starch derivatives followed curing. changed moisture chemical composition results showed successful bulking. slightly improved decay Coniophora puteana Trametes versicolor did change Rhodonia placenta .