Ultralight nanofibre-assembled cellular aerogels with superelasticity and multifunctionality

被引:1016
作者
Si, Yang [1 ]
Yu, Jianyong [2 ,3 ]
Tang, Xiaomin [2 ]
Ge, Jianlong [2 ]
Ding, Bin [1 ,2 ]
机构
[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
[2] Donghua Univ, Coll Text, Key Lab Text Sci & Technol, Minist Educ, Shanghai 201620, Peoples R China
[3] Donghua Univ, Modern Text Inst, Nanomat Res Ctr, Shanghai 200051, Peoples R China
基金
中国国家自然科学基金;
关键词
MECHANICAL-PROPERTIES; CARBON NANOTUBES; FABRICATION; MORPHOLOGY; SEPARATION; CHEMISTRY; RESISTANT; DIOXIDE; FOAMS;
D O I
10.1038/ncomms6802
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Three-dimensional nanofibrous aerogels (NFAs) that are both highly compressible and resilient would have broad technological implications for areas ranging from electrical devices and bioengineering to damping materials; however, creating such NFAs has proven extremely challenging. Here we report a novel strategy to create fibrous, isotropically bonded elastic reconstructed (FIBER) NFAs with a hierarchical cellular structure and superelasticity by combining electrospun nanofibres and the fibrous freeze-shaping technique. Our approach causes the intrinsically lamellar deposited electrospun nanofibres to assemble into elastic bulk aerogels with tunable densities and desirable shapes on a large scale. The resulting FIBER NFAs exhibit densities of >0.12 mg cm(-3), rapid recovery from deformation, efficient energy absorption and multifunctionality in terms of the combination of thermal insulation, sound absorption, emulsion separation and elasticity-responsive electric conduction. The successful synthesis of such fascinating materials may provide new insights into the design and development of multifunctional NFAs for various applications.
引用
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页数:9
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