材料科学
复合材料
蜂巢
韧性
极限抗拉强度
吸水率
静电纺丝
蜂窝结构
纳米纤维
纳米技术
聚合物
作者
Yufei Zhang,Lei Wu,Aijaz Ahmed Babar,Xinglei Zhao,Xianfeng Wang,Jianyong Yu,Bin Ding
标识
DOI:10.1002/smtd.202101011
摘要
Mimicking nature is a highly efficient and meaningful way for designing functional materials. However, constructing bioinspired nanofibrous 3D cellular networks with robust mechanical features is extremely challenging. Herein, a biomimetic, super-flexible, highly elastic, and tough nanofibrous membrane (NFM)-based water harvester is reported with a highly ordered honeycomb-inspired gradient network structure, self-assembled from electrospun spider-silk-like humped nanofibers. The resultant NFM exhibits super flexibility, high tensile strength (2.9 MPa), superior elasticity, and decent toughness (3.39 MJ m-3 ), allowing it to be used as the framework of hygroscopic materials. The resulting hygroscopic NFM displays excellent moisture absorption performance, which can be used as an efficient water harvester with a superhigh equilibrium moisture absorption capacity of 4.60 g g-1 at 95% relative humidity for 96 h, fast moisture absorption and transport rates, and long-term durability, achieving directional transport and collection of tiny water droplets. This work paves the way for the design and development of multifunctional NFMs with a honeycomb-inspired gradient network structure.
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