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<p>Wood panels are extensively applied in furniture, construction fields, where their versatility and cost-effectiveness make them indispensable, but their assembly relies on adhesives that emit toxic formaldehyde, demand energy-intensive curing, and form weak interfacial bonds. Inspired by wood’s self-repair via cellulose microfibril reorganization, we develop a cellulose-based homologous active adhesive (HAA) derived from wood components. HAA cures under ambient hydration, eliminating toxic emissions and reducing energy consumption by &gt;80%. Its mechanism activates wood surface hydroxyl groups and regenerates cellulose to create a seamless transition layer that enhances load transfer and resistance. This architecture enables specific bonding strength up to 100× greater than conventional adhesives, despite ultra-low solid content (&lt;5%). Using molecular dynamics simulations, AFM nanomechanics, spectroscopy, and life-cycle assessment, we reveal that HAA outperforms commercial resins, offering pot life &gt;30 days, full biodegradability, and &gt;70% lower environmental impacts. HAA establishes a biomimetic, circular pathway for sustainable, high-strength wood bonding.</p>

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Wood that bonds itself via homologous adhesion through cellulose reconstitution

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月30日

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  • Yuan Sun,
  • Yang Liu,
  • Long Bai,
  • Shouxin Liu,
  • Zhangmin Wan,
  • Zhaolin Yang,
  • Liwen Yu,
  • Siqi Huan,
  • Chengyu Wang,
  • Zhiguo Li,
  • Yi Lu,
  • Orlando J. Rojas

摘要

Wood panels are extensively applied in furniture, construction fields, where their versatility and cost-effectiveness make them indispensable, but their assembly relies on adhesives that emit toxic formaldehyde, demand energy-intensive curing, and form weak interfacial bonds. Inspired by wood’s self-repair via cellulose microfibril reorganization, we develop a cellulose-based homologous active adhesive (HAA) derived from wood components. HAA cures under ambient hydration, eliminating toxic emissions and reducing energy consumption by >80%. Its mechanism activates wood surface hydroxyl groups and regenerates cellulose to create a seamless transition layer that enhances load transfer and resistance. This architecture enables specific bonding strength up to 100× greater than conventional adhesives, despite ultra-low solid content (<5%). Using molecular dynamics simulations, AFM nanomechanics, spectroscopy, and life-cycle assessment, we reveal that HAA outperforms commercial resins, offering pot life >30 days, full biodegradability, and >70% lower environmental impacts. HAA establishes a biomimetic, circular pathway for sustainable, high-strength wood bonding.