Skip to Main Content
How overdrying wood reduces its bonding to phenol-formaldehyde adhesives : a critical review of the literature. Part II, Chemical reactionsAuthor(s): Alfred W. Christiansen
Source: Wood and fiber science. Vol. 23, no. 1 (1991): Pages 69-84
Publication Series: Miscellaneous Publication
PDF: View PDF (183 KB)
DescriptionLiterature dealing with the effect of excessive drying (overdrying) on wood surface inactivation to bonding is reviewed in two parts and critically evaluated, primarily for phenolic adhesives. Part 1 of the review, published earlier, covers physical mechanisms that could contribute to surface inactivation. The principal physical mechanism is the migration to the surface ofextractives that decrease wettability. Pan II of the review considers mechanisms involving chemical reactions: reduction of wood surface strength, oxidation and pyrolysis of wood bonding sites, and chemical interference with resin cure or bonding. In those cases where extractives are not the primary cause of inactivation, oxidation or pyrolysis probably is the major cause of inactivation. Inactivation of oak and of some Southeast Asian hardwoods may be due to the acidity of extractives, but the importance ofdecreased wettability caused by extractives cannot be dismissed.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationChristiansen, Alfred W. 1991. How overdrying wood reduces its bonding to phenol-formaldehyde adhesives : a critical review of the literature. Part II, Chemical reactions. Wood and fiber science. Vol. 23, no. 1 (1991): Pages 69-84
KeywordsDrying, inactivation, adhesive, bonding, review, extractives, mechanism, wettability, oxidation, acidity
- How overdrying wood reduces its bonding to phenol-formaldehyde adhesives : a critical review of the literature. Part I, Physical responses
- Thermal Instability of Fats Relative to Surface Wettability of Yellow Birchwood (Betula lutea)
- Influence of Variation in Physical and Chemical Properties of Southern Red Oak Lumber on Decay Resistance
XML: View XML