Durability conferred on wood by lignin formulations

Different types of lignins were tested, validating the interest of Kraft lignins in inactivating the growth of wood degradation fungi. The possibility of impregnating wood in an autoclave was validated on laboratory specimens. In parallel, the effect of model lignin molecules on wood preservation was studied with the LCPO.

A validation stage for the use of lignins is now necessary on a larger scale to better understand the wood impregnation mechanisms. The effect of ageing, and therefore of durability, on larger pieces of wood will therefore be studied, taking care to quantify the retention levels of the introduced lignins.

In addition, the study will focus on the use of additive formulations to improve the penetration and retention of lignins in wood, with the aim of being able to propose a sustainable, biobased treatment solution to the sector’s industrialists.