Performance of a formaldehyde-free sesame protein adhesive modified by urea in the presence and absence of glyoxal

Sesame cake and meal, byproducts of the sesame oil process industry mainly used as feed fertilizer, are often not optimally utilized wasted when material could be a high-quality protein source. This research primarily emphasizes preparation protein-based adhesive with urea glyoxal modification to use wood adhesive. The performance characterization modified (USP GUSP, respectively) were measured precisely. After was added, water resistance GUSP significantly enhanced, reaching standard for Type II plywood. formaldehyde emission test showed that formaldehyde-free adhesive, having lower than demand E0 level (i.e., 0.5 mg/L). Furthermore, increasing content in adhesives enhanced thermal stability but significantly. A substance crosslinking structure formed from reaction between glyoxal, which resistance. Meanwhile, fractured compact surface also propitious enhance Thus, novel plywood fabrication.