气候变化领域集成服务门户(CCPortal): Sustainable high-strength macrofibres extracted from natural bamboo

CCPortal

DOI	10.1038/s41893-021-00831-2
	Sustainable high-strength macrofibres extracted from natural bamboo
	Li Z.; Chen C.; Xie H.; Yao Y.; Zhang X.; Brozena A.; Li J.; Ding Y.; Zhao X.; Hong M.; Qiao H.; Smith L.M.; Pan X.; Briber R.; Shi S.Q.; Hu L.
发表日期	2021
ISSN	2398-9629
英文摘要	Synthetic fibres such as polyester and carbon are used in a broad variety of industries. However, as they derive from petrochemicals that are neither renewable nor biodegradable, the development of natural alternatives has gained increasing momentum in recent years. Here, we report a top-down approach for scalable production of cellulose macrofibres from bamboo stems involving a mild delignification process followed by water-assisted air-drying. Consisting of aligned and densely packed cellulose nanofibrils that possess strong hydrogen bonds and van der Walls forces, the extracted fibres exhibit a tensile strength of 1.90 ± 0.32 GPa, a Young’s modulus of 91.3 ± 29.7 GPa and a toughness of 25.4 ± 4.5 MJ m−3, which exceed those of wood-derived fibres and are comparable to synthetic carbon analogues. As a result of the low density, the specific strength is as high as 1.26 ± 0.21 GPa cm−3 g−1, surpassing most reinforcing components such as steel wire, synthetic polymers and vitreous fibres. The life-cycle assessment reveals that replacing polymer and carbon fibres in structural composites with the current natural fibres leads to substantial reduction in carbon emissions. Our work suggests a pathway towards sustainability in wider areas of application, including automobiles, aeronautics and construction. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Bamboo; Cellulose; Life cycle; Natural fibers; Steel fibers; Tensile strength; Textile fibers; Van der Waals forces; Wood; Air drying; Carbon analogs; Cellulose nanofibrils; High-strength; Macrofibers; Scalable production; Synthetic carbon; Top down approaches; Van der Wall forces; Water assisted; Hydrogen bonds
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249851
作者单位	Department of Materials Science and Engineering, University of Maryland, College Park, MD, United States; Yale School of the Environmental, Yale University, New Haven, CT, United States; Department of Mechanical Engineering, University of North Texas, Denton, TX, United States; Department of Biological Systems Engineering, University of Wisconsin-Madison, Madison, WI, United States; Center for Materials Innovation, University of Maryland, College Park, MD, United States
推荐引用方式 GB/T 7714	Li Z.,Chen C.,Xie H.,et al. Sustainable high-strength macrofibres extracted from natural bamboo[J],2021.
APA	Li Z..,Chen C..,Xie H..,Yao Y..,Zhang X..,...&Hu L..(2021).Sustainable high-strength macrofibres extracted from natural bamboo.Nature Sustainability.
MLA	Li Z.,et al."Sustainable high-strength macrofibres extracted from natural bamboo".Nature Sustainability (2021).