Kinetic color analysis for assessing the effects of borate and glycerol on thermal modification of wood

The effects of borate and glycerol impregnation of Douglas-fir heartwood prior to open-air oven thermal modification at 160–200 °C for 2–4 h on wood color were measured. These materials were used to analyze the effects of modifying agents on thermal decomposition of wood by color nondestructive assessments. Kinetic analysis using time–temperature superposition and the horizontal shift factor were employed to quantify color changes. Lightness...