Journal
SCIENCE ADVANCES
Volume 6, Issue 18, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aaz1114
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Funding
- National Natural Science Foundation of China [11525211, 51732011]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21521001]
- Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDJ-SSW-SLH036]
- National Basic Research Program of China [2014CB931800]
- Fundamental Research Funds for the Central Universities [WK2090050043]
- Users with Excellence and Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences [2015HSC-UE007]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040402]
- USTC Research Funds of the Double First-Class Initiative [YD2480002002]
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Sustainable structural materials with light weight, great thermal dimensional stability, and superb mechanical properties are vitally important for engineering application, but the intrinsic conflict among some material properties (e.g., strength and toughness) makes it challenging to realize these performance indexes at the same time under wide service conditions. Here, we report a robust and feasible strategy to process cellulose nanofiber (CNF) into a high-performance sustainable bulk structural material with low density, excellent strength and toughness, and great thermal dimensional stability. The obtained cellulose nanofiber plate (CNFP) has high specific strength [similar to 198 MPa/(Mg m(-3))], high specific impact toughness [similar to 67 kJ m(-2)/(Mg m(-3))], and low thermal expansion coefficient (<5 x 10(-6) K-1), which shows distinct and superior properties to typical polymers, metals, and ceramics, making it a low-cost, high-performance, and environmental-friendly alternative for engineering requirement, especially for aerospace applications.
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