Plant Cellulose Nanofiber-Derived Structural Material with High-Density Reversible Interaction Networks for Plastic Substitute
| Autor: | Shu-Hong Yu, Ling Zhangchi, Han Zimeng, Yin Chonghan, Qing-Fang Guan, Yang Kunpeng, Yang Huaibin |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Structural material Polymers Mechanical Engineering Nanofibers Modulus Bioengineering General Chemistry Condensed Matter Physics Thermal expansion chemistry.chemical_compound Petrochemical chemistry Flexural strength Nanofiber Thermal General Materials Science Cellulose Composite material Plastics Ecosystem |
| Zdroj: | Nano letters. 21(21) |
| ISSN: | 1530-6992 |
| Popis: | Ubiquitous petrochemical-based plastics pose a potential threat to ecosystems. In response, bioderived and degradable polymeric materials are being developed, but their mechanical and thermal properties cannot compete with those of existing petrochemical-based plastics, especially those used as structural materials. Herein, we report a biodegradable plant cellulose nanofiber (CNF)-derived polymeric structural material with high-density reversible interaction networks between nanofibers, exhibiting mechanical and thermal properties better than those of existing petrochemical-based plastics. This all-green material has substantially improved flexural strength (∼300 MPa) and modulus (∼16 GPa) compared with those of existing petrochemical-based plastics. Its average thermal expansion coefficient is only 7 × 10-6 K-1, which is more than 10 times lower than those of petrochemical-based plastics, indicating its dimension is almost unchanged when heated, and thus, it has a thermal dimensional stability that is better than those of plastics. As a fully bioderived and degradable material, the all-green material offers a more sustainable high-performance alternative to petrochemical-based plastics. |
| Databáze: | OpenAIRE |
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