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This document discusses blending polyvinyl alcohol (PVA) and tannin to create a water-based wood adhesive. Boric acid is added to crosslink the PVA and tannin, which have free hydroxyl groups that can react with the trivalent boron in boric acid. The crosslinking is shown to enhance the adhesive properties, increasing viscosity, glass transition temperature, water resistance, and tensile strength on bonded wood samples. The study suggests the PVA/tannin blend crosslinked with boric acid could be a suitable

Author

Osvaldo Roman

Language

EN