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论文题目: Tough protein-carbon nanotube hybrid fibers comparable to natural spider silks
英文论文题目: Tough protein-carbon nanotube hybrid fibers comparable to natural spider silks
第一作者: Fang, GQ; Zheng, ZK; Yao, JR; Chen, M; Tang, YZ; Zhong, JJ; Qi, ZM; Li, Z; Shao, ZZ; Chen, X
英文第一作者: Fang, GQ; Zheng, ZK; Yao, JR; Chen, M; Tang, YZ; Zhong, JJ; Qi, ZM; Li, Z; Shao, ZZ; Chen, X
联系作者: Chen, X (reprint author), Fudan Univ, Collaborat Innovat Ctr Polymers & Polymer Composi, Dept Macromol Sci, Adv Mat Lab,State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China.
英文联系作者: Chen, X (reprint author), Fudan Univ, Collaborat Innovat Ctr Polymers & Polymer Composi, Dept Macromol Sci, Adv Mat Lab,State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China.
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发表年度: 2015
卷: 3
期: 19
页码: 3940-3947
摘要: Animal silks, especially spider dragline silks, have an excellent portfolio of mechanical properties, but it is still a challenge to obtain artificial silk fibers with similar properties to the natural ones. In this paper, we show how to extrude tough regenerated silk fibers by adding a small amount of commercially available functionalized multiwalled carbon nanotubes (less than 1%) through an environmentally friendly wet-spinning process reported by this laboratory previously. Most of the resulting regenerated silk fibers exhibited a breaking energy beyond 130 MJ m(-3), which is comparable to spider dragline silks (similar to 160 MJ m(-3)). The best of these fibers in terms of performance show a breaking stress of 0.42 GPa, breaking strain of 59%, and breaking energy of 186 MJ m(-3). In addition, we used several advanced characterization techniques, such as synchrotron radiation FTIR microspectroscopy and synchrotron radiation X-ray diffraction, to reveal the toughening mechanism in such a protein-inorganic hybrid system. We believe our attempt to produce such tough protein-based hybrid fibers by using cheap, abundant and sustainable regenerated silkworm protein and commercially available functionalized carbon nanotubes, with simplified industrial wet-spinning apparatus, may open up a practical way for the industrial production of super-tough fiber materials.
英文摘要: Animal silks, especially spider dragline silks, have an excellent portfolio of mechanical properties, but it is still a challenge to obtain artificial silk fibers with similar properties to the natural ones. In this paper, we show how to extrude tough regenerated silk fibers by adding a small amount of commercially available functionalized multiwalled carbon nanotubes (less than 1%) through an environmentally friendly wet-spinning process reported by this laboratory previously. Most of the resulting regenerated silk fibers exhibited a breaking energy beyond 130 MJ m(-3), which is comparable to spider dragline silks (similar to 160 MJ m(-3)). The best of these fibers in terms of performance show a breaking stress of 0.42 GPa, breaking strain of 59%, and breaking energy of 186 MJ m(-3). In addition, we used several advanced characterization techniques, such as synchrotron radiation FTIR microspectroscopy and synchrotron radiation X-ray diffraction, to reveal the toughening mechanism in such a protein-inorganic hybrid system. We believe our attempt to produce such tough protein-based hybrid fibers by using cheap, abundant and sustainable regenerated silkworm protein and commercially available functionalized carbon nanotubes, with simplified industrial wet-spinning apparatus, may open up a practical way for the industrial production of super-tough fiber materials.
刊物名称: JOURNAL OF MATERIALS CHEMISTRY B
英文刊物名称: JOURNAL OF MATERIALS CHEMISTRY B
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学科: Materials Science
英文学科: Materials Science
影响因子: 4.726
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论文类别: Article
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