Self-densified super-strong wood

Dafang Huang; Jie Li; Suiyi Li; Jianbing Hu; Zhiru Cao; Yang Guo; Yu Ding; Mingwei Zhu; Yanfeng Chen

doi:10.1016/j.jobab.2025.03.001

Volume 10 Issue 2

May 2025

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Article Navigation > Journal of Bioresources and Bioproducts > 2025 > 10(2): 199-208

Dafang Huang, Jie Li, Suiyi Li, Jianbing Hu, Zhiru Cao, Yang Guo, Yu Ding, Mingwei Zhu, Yanfeng Chen. Self-densified super-strong wood[J]. Journal of Bioresources and Bioproducts, 2025, 10(2): 199-208. doi: 10.1016/j.jobab.2025.03.001

Citation:

Dafang Huang, Jie Li, Suiyi Li, Jianbing Hu, Zhiru Cao, Yang Guo, Yu Ding, Mingwei Zhu, Yanfeng Chen. Self-densified super-strong wood[J]. Journal of Bioresources and Bioproducts, 2025, 10(2): 199-208. doi: 10.1016/j.jobab.2025.03.001

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Self-densified super-strong wood

doi: 10.1016/j.jobab.2025.03.001

National Laboratory of Solid State Microstructures & Jiangsu Key Laboratory of Artificial Functional Materials & Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China

Funds:

No 32401505

This work was supported by National Natural Science Foundation of China (No. 91963211

No 92463303), National Key Research and Development Program of China (No. 2018YFB1105400), and Jiangsu Funding Program for Excellent Postdoctoral Talent (No. 2022ZB61).

No 51872136

No 92363001

Available Online: 2025-05-09
Publish Date: 2025-03-12

Abstract

Abstract

Lightweight structural materials with high strength and toughness are highly desirable for many advanced applications. Wood, as a sustainable structural material, is widely used in engineering due to its abundance and excellent mechanical properties. In this paper, we report a self-densification strategy to develop super-strong wood by reassembling highly aligned wood fibers as functional units and self-densified without the need for hot pressing. The resulting self-densified wood exhibits ultra-high tensile strength (496.1 MPa), flexural strength (392.7 MPa) and impact toughness (75.2 kJ/m²), surpassing those of compressed densified wood and traditional metal materials like aluminum alloys. Notably, the self-densified wood exhibits uniform shrinkage in the cross-section while maintaining its longitudinal dimension. This characteristic leads to an order-of-magnitude enhancement in the overall mechanical performance of the wood, presenting a significant advantage over compressed densified wood. Such super-strong yet lightweight wood has great potential for application as a sustainable engineering material, replacing traditional structural materials such as metals and alloys.
- Self-densification,
- Mechanical property,
- Microstructure regulation,
- Lightweight,
- Wood

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References(49)

References

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