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Gluability of Thermally Modified Aspen, Birch, and Poplar Rotary Cut Veneers with Suberinic Acids Adhesive

Author

Listed:
  • Anete Meija

    (Institute of Civil Engineering and Woodworking, Latvia University of Life Sciences and Technologies, LV-3001 Jelgava, Latvia)

  • Uldis Spulle

    (Institute of Civil Engineering and Woodworking, Latvia University of Life Sciences and Technologies, LV-3001 Jelgava, Latvia)

  • Luize Ramata

    (Institute of Civil Engineering and Woodworking, Latvia University of Life Sciences and Technologies, LV-3001 Jelgava, Latvia)

  • Ignazia Cuccui

    (National Research Council of Italy, Institute of BioEconomy, 38098 San Michele all’Adige, Italy)

  • Ottaviano Allegretti

    (National Research Council of Italy, Institute of BioEconomy, 38098 San Michele all’Adige, Italy)

  • Aigars Paze

    (Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia)

  • Janis Rizikovs

    (Latvian State Institute of Wood Chemistry, LV-1006 Riga, Latvia)

Abstract

The eco-friendly lifestyle has gained traction at individual and industrial levels, especially following Europe’s “Green Deal”. While the woodworking industry in Latvia has made strides toward waste-free production, wood processing still produces by-products that require effective utilization. Instead of burning these residues for energy, a sustainable option is repurposing birch bark into suberinic acids adhesive, which is environmentally friendly and safe for humans. Research shows that thermally modified aspen, birch, and poplar veneers treated using the Termovuoto process at 160 °C/50 min, 204 °C/120 min, 214 °C/120 min, 217 °C/180 min, and 218 °C/30 min can be bonded with this adhesive and meet the EN 314-2:1993 standard for outdoor applications classified as Class 3 bonding. However, hydrothermally modified veneers treated at 160 °C 50 min do not bond successfully, failing to meet Class 3 requirements.

Suggested Citation

  • Anete Meija & Uldis Spulle & Luize Ramata & Ignazia Cuccui & Ottaviano Allegretti & Aigars Paze & Janis Rizikovs, 2025. "Gluability of Thermally Modified Aspen, Birch, and Poplar Rotary Cut Veneers with Suberinic Acids Adhesive," Sustainability, MDPI, vol. 17(5), pages 1-18, February.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:5:p:1990-:d:1599850
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    References listed on IDEAS

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    1. Guangxu Yang & Zhenggang Gong & Xiaolin Luo & Lihui Chen & Li Shuai, 2023. "Bonding wood with uncondensed lignins as adhesives," Nature, Nature, vol. 621(7979), pages 511-515, September.
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