Improving soy-based adhesives for wood particleboard by tannins addition

Two different types of commercial tannins, namely chestnut (a hydrolysable tannin) and mimosa (a condensed flavonoid tannin), were used with two different types of hardener, namely hexamine and glyoxal, to upgrade soy-based adhesives for bonding of wood particleboard. Different soy-based adhesive formulations were tested by differential scanning calorimetry (DSC) and by thermomechanical analysis (TMA). The physical properties of different...