Development and optimization of a new formaldehyde-free cornstarch and tannin wood adhesive Entwicklung und Optimierung eines neuen, formaldehydfreien Holzklebstoffes auf Maisstärke- und Tanninbasis

The development and optimization of a new, environment-friendly adhesive made from abundant and renewable cornstarch and tannin is described in this study. At present, the production of wood composites mainly relies on petrochemical- and formaldehyde-based adhesives such as phenol-formaldehyde (PF) resins and urea-formaldehyde (UF) resins. Formaldehyde-free cornstarch plus tannin adhesives were evaluated for mechanical and physical properties (shear strength, rheological characterisation and thermogravimetric analysis).