Thin wood-based composites, such as plywood and particleboard, are bonded with a thermoset adhesive and are produced via a hot press process. At present, UF is the most common thermoset adhesive used for production of wood-based composites. The emission of the carcinogenic formaldehyde from UF-bonded panels during the use of panels affects the indoor air quality and causes many health problems. In the first part of the research, two formaldehyde-free wood adhesives were developed by crosslinking the structures of soybean flour (SF) with poly (glycidyl methacrylate-co-styrene) (PGS) emulsions.
Thick wood-based composites, such as cross-laminated timber (CLT), glulam, and thick plywood, are bonded with a cold-set adhesive and are produced via a cold press process. Resorcinol-formaldehyde (RF), phenol-resorcinol-formaldehyde (PRF), melamine-urea-formaldehyde (MUF), and polyurethanes (PUR) are the currently available cold-set wood adhesives. They are all carcinogenic formaldehyde-based or very toxic isocyanates-based adhesives and are very hazardous during the production of wood-based composites. In the second part of the research, two formaldehyde-free and isocyanates-free cold-set wood adhesives were developed based on epoxy-resins that do not have any major hazardous issue.
Yahya is completing a PhD program double majoring in Wood Science and Materials Science. He has a B.Sc. and M.Sc. in Polymer Engineering from Tehran, Iran. He is currently exploring various job opportunities.
Wednesday, June 5, 2019 at 9:00am to 10:00am
Richardson Hall, Room 115
3180 SW Jefferson Way, Corvallis, OR 97331