Depolymerization and characterization of Acacia mangium tannin for the preparation of mussel-inspired fast-curing tannin-based phenolic resins

Similar to the 3,4-dihydroxy-L-phenylalanine (DOPA) structures in mussel adhesive proteins (MAPs), tannin contains abundant similar catechol structures in the flavonoid units, which might be developed into high-performance adhesives. In this study, Acacia mangium tannin (AMT) was depolymerized under acidic conditions with 2-methylfuran as a nucleophilic reagent. The depolymerized tannin (DAMT) was combined with polyethyleneimine (PEI) to prepare...