Investigation of soy protein-Kymene adhesive systems for wood composites

• Published in: Journal of the American Oil Chemists' Society Vol. 81; no. 5; pp. 487 - 491
• Main Authors: Li, K, Peshkova, S, Geng, X
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.05.2004; Springer
• Subjects: Adhesive Kymene; adhesives; Biological and medical sciences; composite wood products; Fat industries; Food industries; formaldehyde-free wood adhesives; Fundamental and applied biological sciences. Psychology; protein isolates; shear strength; soy protein; soy protein isolate; water resistance; wet‐strength agent; wood composites; Water; Oils and fats industry; Soy protein; wet-strength agent; Wood; Shear strength; water resistance; Kymene; Adhesive; wood composites
• ISSN: 0003-021X; 1558-9331
• DOI: 10.1007/s11746-004-0928-1

This study investigated a new adhesive system, consisting of soy protein isolate (SPI) and Kymene® 557H (simply called Kymene) (a commercial wet‐strength agent for paper), that was prepared by mixing SPI and Kymene. Wood composites bonded with SPI‐Kymene adhesive preparations had shear strengths comparable to or higher than those bonded with commercial phenol formaldehyde resins. Wood composites bonded with the new adhesive system had high water resistance and retained relatively high strength even after they had undergone a boiling‐water test. The new adhesive system is formaldehyde‐free, easy to use, and environmentally friendly. Kymene was proposed to serve as a curing agent in SPI‐Kymene adhesives.