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Table 3 The properties and plywood performances of lignin-phenol-formaldehyde (LPF) resin adhesives

From: Valorization of lignin and cellulose in acid-steam-exploded corn stover by a moderate alkaline ethanol post-treatment based on an integrated biorefinery concept

Adhesives Adhesive properties Plywood performances
pH Viscosity (mPa s) Solid content (%) Bonding strength (MPa) Formaldehyde emission (mg L−1)
ALPF 11.8 (0.6)c 987.4 (1.58) 51.3 (0.44) 1.14 (0.11) 0.14 (0.06)
EHRPF 11.3 (0.46) 766.2 (0.90) 53.3 (0.26) 1.01 (0.17) 0.21 (0.02)
GB/T 14732-2006a ≥7 ≥60 ≥35 ≥0.7 ≤0.5b
  1. ALPF lignin-phenol-formaldehyde resin adhesive prepared with AL, EHRPF lignin-phenol-formaldehyde resin adhesive prepared with EHR
  2. aGB/T 14732-2006: Wood adhesives: urea formaldehyde, phenol formaldehyde and melamine formaldehyde resins
  3. bThis requirement is defined by Chinese National Standard GB/T 9846.3-2004
  4. cThe value in parenthesis is standard deviation