材料科学
纤维素
接口(物质)
复合材料
纳米技术
高分子科学
建筑工程
化学工程
润湿
工程类
坐滴法
作者
Xin Yue,Huai‐Bin Yang,Zhi‐Yong Han,Yongmei Lu,Chong‐Han Yin,Xiangyong Zhao,Zhao‐Xiang Liu,Qing‐Fang Guan,Shu‐Hong Yu
标识
DOI:10.1002/adma.202306451
摘要
All-natural materials derived from cellulose nanofibers (CNFs) are expected to be used to replace engineering plastics and have attracted much attention. However, the lack of crack extension resistance and 3D formability of nanofiber-based structural materials hinders their practical applications. Here, a multiscale interface engineering strategy is reported to construct high-performance cellulose-based materials. The sisal microfibers are surface treated to expose abundant active CNFs with positive charges, thereby enhancing their interfacial combination with the negatively charged CNFs. The robust multiscale dual network enables easy molding of multiscale cellulose-based structural materials into complex 3D special-shaped structures, resulting in nearly twofold and fivefold improvements in toughness and impact resistance compared with those of CNFs-based materials. Moreover, this multiscale interface engineering strategy endows cellulose-based structural materials with better comprehensive performance than petrochemical-based plastics and broadens cellulose's potential for lightweight applications as structural materials with lower environmental effects.
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