Alkylimidazolium Ionic Liquids Absorption and Diffusion in Wood

Ionic liquids represent a class of highly tunable organic compounds responsible for many applications in the domain wood-based materials. It has often been emphasized that use ionic derives from their high affinity lignocellulose and good penetration ability into wood structures. This paper discusses sorption different types 1-alkyl-3-methylimidazolium with lateral alkyl chains, ranging ethyl to hexyl spruce beech wood, as function cation molecular mass, anion type (chloride, tetrafluoroborate, acetate), intrinsic properties (surface tension kinematic viscosity) at room temperature. All studied present relative uptake values equilibrium, 11.2% 69.7%. The bulk diffusion coefficients range 2 × 10−3 28 mm2/min, being higher longitudinal direction both wood. value 1-ethyl-3-methylimidazolium chloride is only 25% lower than water, despite obvious differences viscosity surface tension, demonstrating potential industry-related (as impregnation compound carriers preservatives).