首页|Large-area ultrastrong and stiff aramid nanofiber based layered nanocomposite films
Large-area ultrastrong and stiff aramid nanofiber based layered nanocomposite films
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One-dimensional(1D)aramid nanofiber(ANF)based nanocomposite films have drawn increasing attentions in various applications due to their excellent mechanical properties and impressive chemical and thermal stabilities.However,the large-area fabrication of aramid nanocomposite films with ultrastrong mechanical properties under mild conditions remains a great challenge.Here we present a facile superspreading-assisted strategy to produce aramid nanofiber based oriented layered nanocomposites using phase inversion process that occurs at the fully swollen hydrogel surfaces.The nanocomposite films based on ANF,carboxylation carbon tube(CNT-COOH),poly(vinyl alcohol)(PVA),and MXene nanosheet exhibit a tensile strength of up to 870.8±85 MPa,a Young's modulus of 21.8±2.2 GPa,and outstanding toughness(up to 43.2±4.6 MJ/m3),which are much better than those conventional aramid nanofiber based materials.Electrical conductivity of our nanocomposite films reaches the maximum of about 1100 S/m.The fabulous mechanical properties combination and continuous production capability render our strategy representing a promising direction for the development of high-performance nanocomposites.
aramid nanofibersMXene nanosheetsnanocompositesultrastrong and stiffsuperspreadinglarge-area production
Zhidong Nie、Yingzhi Sun、Tianxu Zhou、Shengwen Kong、Linxing Liu、Chuangqi Zhao、Mingjie Liu
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Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education,School of Chemistry,Beihang University,Beijing 100191,China
University of Science and Technology of China,Hefei 230026,China
Suzhou Institute for Advanced Research,University of Science and Technology of China,Suzhou 215123,China
International Research Institute for Multidisciplinary Science,Beihang University,Beijing 100191,China
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National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China
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