Peroxyacetic Bonding of Wood

Peroxyacetic acid was used to laminate white fir, aspen, and sugar pine directly, in contrast to conventional bonding systems employing film-forming resins. Variables tested included concentrations of hydrogen peroxide, times for peroxyacid formation of “pot life,” and different mineral acid catalysts for peroxyacid formation. Generally higher hydrogen peroxide concentrations, longer pot lives, and the more reactive mineral acids led to higher shear strengths, when tested both wet and dry. As a rule, samples tested showed a wide range of variability. The lack of gap-filling capability inherent in this type of bonding seems the most likely explanation.

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