Bonding wood with uncondensed lignins as adhesives

Abstract Plywood is widely used in construction, such as for flooring and interior walls, as well as in the manufacture of household items such as furniture and cabinets. Such items are made of wood veneers that are bonded together with adhesives such as urea–formaldehyde and phenol–formaldehyde resins 1,2 . Researchers in academia and industry have long aimed to synthesize lignin–phenol–formaldehyde resin adhesives using biomass-derived lignin, a phenolic polymer that can be used to substitute the petroleum-derived phenol 3–6 . However, lignin–phenol–formaldehyde resin adhesives are less attractive to plywood manufacturers than urea–formaldehyde and phenol–formaldehyde resins owing to their appearance and…

• NN
  National Natural Science Foundation of China

  Awards: 31870559, 32071716
• NF
  National Forestry and Grassland Administration

  Award: 20201326005
• FA
  Fujian Agriculture and Forestry University

  Awards: 2021J06017, xjq201923