Multiscale interface engineering enables strong and water resistant wood bonding

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors

Date

2025-08-25

Department

Department of Bioproducts and Biosystems

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Mcode

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Language

en

Pages

12

Series

Nature Communications, Volume 16, issue 1

Abstract

The growing use of timber in construction has created an urgent need for high-performing engineered wood. Laminating timber facilitates production of structural components, but strong interfacial bonding is essential for engineered wood to outperform solid wood. Here we introduce a method for achieving strong wood bonding using an ionic liquid-dissolved cellulose solution. At the bonding interface, the dissolved cellulose fills the lumina and entangles with the wood cell wall, forming a dense cellulose network interconnecting with wood upon regeneration in water. Concurrent hot-pressing forms a permanently interlocked structure of wood cells. The multiscale bonded interface is water resistant with a shear strength over 20 MPa, nearly twice that of solid wood. This work presents an eco-friendly, high-performing wood bonding mechanism with promising applications in engineered wood products.

Description

Keywords

bonding, cellulose, interface, ionic liquid, wood

Other note

DOI

10.1038/s41467-025-63239-y

Citation

Zhang, S, Koskela, S, Meinhard, H, Penttilä, P, Awais, M, Linder, M, Wang, S & Rautkari, L 2025, 'Multiscale interface engineering enables strong and water resistant wood bonding', Nature Communications, vol. 16, no. 1, 7902. https://doi.org/10.1038/s41467-025-63239-y

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https://urn.fi/URN:NBN:fi:aalto-202510087684

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[article-cris] Kemian tekniikan korkeakoulu / CHEM