In this presentation a review is made of the use of cottonseed protein in wood adhesive applications. Both unmodified and modified cottonseed protein isolates were studied and compared to corresponding soy protein isolates for their adhesive properties when bonded to wood composites. Modifications included treatments with alkali, guanidine hydrochloride, sodium dodecyl sulfate (SDS), urea, and others. Wood composites bonded with cottonseed protein exhibited higher shear strength relative to modified or unmodified soy proteins. Cottonseed protein with some modified treatments gave better shear strength than unmodified cottonseed protein. Wood composites bonded with unmodified or SDS-modified cottonseed protein also showed superior retained strengths on a hot water test. Thus, cottonseed protein (with or without modification) seems to be a viable alternative to soy protein for the wood adhesive application.

Use of cottonseed proteins in adhesive applications

251st National Meeting (2016)

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