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    Author(s): Douglas J. Gardner; Charles E. Frazier; Alfred W. Christiansen
    Date: 2006
    Source: Wood Adhesives 2005 : November 2-4, 2005 ... San Diego, California, USA. Madison, WI : Forest Products Society, c2006: ISBN: 1892529459: pages 93-97.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (337 KB)

    Description

    A recent collaborative effort among the U.S. Forest Products Laboratory, Virginia Tech, and the University of Maine has explored the possible bonding mechanisms contributing to durable wood adhesive bonding using hydroxymethyl resorcinol (HMR) surface treatment. Current adhesive bonding mechanisms include: mechanical interlocking, electronic or electrostatic theory, adsorption, thermodynamic or wetting theory, diffusion theory, chemical (covalent) bonding theory, theory of weak boundary layers and interphases. In this paper, the findings of the research project will be presented and categorized relative to current adhesion bonding mechanism theories. In addition, consideration will be given to HMR’s impact on adhesion bonding relative to interactions across different length scales from molecular to macroscopic. HMR has been shown to diffuse into the wood cell wall on the molecular scale and appears to associate with lignin based on similar solubility behavior. Within the cell wall, HMR chemically crosslinks contributing both to an increased stiffness of the wood material and improved dimensional stabilization on a macroscopic scale.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Gardner, Douglas J.; Frazier, Charles E.; Christiansen, Alfred W. 2006. Characteristics of the wood adhesion bonding mechanism using hydroxymethyl resorcinol. Wood Adhesives 2005 : November 2-4, 2005 ... San Diego, California, USA. Madison, WI : Forest Products Society, c2006: ISBN: 1892529459: pages 93-97.

    Keywords

    Elasticity, crosslinking, resorcinol, adhesives, testing, glue, wood surfaces, adhesion, dimensional stability, stiffness, wood bonding, durability, hydroxymethylated resorcinol, resorcinol glues, glues, bonding, HMR

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https://www.fs.usda.gov/treesearch/pubs/27353