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The bio-oil from fast pyroysis of cornstalks was used as the substitute for phenol to synthesize resol resins as aln ideal candidate of wood adhesives. The effects of formaldehyde/phenol (F/P) molar ratios and bio-oil/phenol (O/P) weight ratios on rheology, thermal cure, thermal resistance and adhesion of plywoods were investigated. With an increase in bio-oil addition, the gel time became longer, and the thermal cure exothermic temperature shifted slightly higher. It was found that the bio-resol resin with bio-oil/phenol=1/2(wt) and F/P=1.5(mol) had the best comprehensive properties. The plywoods pr°C essed with bio-resol adhesives were consistent with the plywood standards of E0 and type I*. Keywords-Bio-oil; Phenol; Substitute; Thermosets; Crosslinking; Wood adhesives

Fast Pyrolysis Biomass Oil as the Substitute of Phenol for the Synthesis of Resol Resin as Wood Adhesive