期刊
ADVANCED SCIENCE
卷 8, 期 12, 页码 -出版社
WILEY
DOI: 10.1002/advs.202100559
关键词
bio‐ based polymers; biocomposite; nanotechnology; sustainable; transparent wood
资金
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [742733]
- KTH
- Knut and Alice Wallenberg foundation through the Wallenberg Wood Science Center
- KAW Biocomposites program at KTH Royal Institute of Technology
A novel bio-based transparent wood biocomposite was developed by synthesizing a new limonene acrylate monomer from renewable resources. The biocomposite exhibits excellent optical transparency, low haze, and high mechanical performance, making it a promising material for sustainable wood nanotechnologies for structural applications.
The sustainable development of engineering biocomposites has been limited due to a lack of bio-based monomers combining favorable processing with high performance. Here, the authors report a novel and fully bio-based transparent wood biocomposite based on green synthesis of a new limonene acrylate monomer from renewable resources. The monomer is impregnated and readily polymerized in a delignified, succinylated wood substrate to form optically transparent biocomposites. The chemical structure of the limonene acrylate enables diffusion into the cell wall, and the polymer phase is both refractive index-matched and covalently linked to the wood substrate. This results in nanostructured biocomposites combining an excellent optical transmittance of 90% at 1.2 mm thickness and a remarkably low haze of 30%, with a high mechanical performance (strength 174 MPa, Young's modulus 17 GPa). Bio-based transparent wood holds great potential towards the development of sustainable wood nanotechnologies for structural applications, where transparency and mechanical performance are combined.
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