Mimosa tannins and lignosulfonates were used in wood adhesives formulation to substitute resins based on formaldehyde. Mimosa tannins were mixed with either glyoxalated sodium lignosulfonates or glyoxalated ammonium lignosulfonates. The ratios of mimosa tannins and sodium lignosulfonates varied from 20% tannins to 60% tannins. The thermal durability of the adhesives were analysed by thermogravimetric analysis (TGA), thermomechanical analysis (TMA) and differential scanning calorimetry (DSC). Mimosa tannins-sodium lignosulfonates and maritime pine bark tannins-ammonium lignosulfonates adhesives were made at the optimised tannin-lignin ratio. The thermal durability of these resins were also analysed by TGA, TMA and DSC. The results showed a thermal stability of the adhesives up to approximately 200°C. Moreover, biodegradation tests on the most effective resins were carried out, by confronting our adhesives against Coniophora puteana and Coriolus versicolor. The results showed that the adhesives were resistant to a fungal attack.

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