Silk reinforced with graphene or carbon nanotubes spun by spiders
Here, we report the production of silk incorporating graphene and carbon nanotubes directly by spider spinning, after spraying spiders with the corresponding aqueous dispersions. We observe a significant increment of the mechanical properties with respect to the pristine silk, in terms of fracture s...
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| creator | Lepore, Emiliano Bonaccorso, Francesco Bruna, Matteo Bosia, Federico Taioli, Simone Garberoglio, Giovanni Ferrari, Andrea C Pugno, Nicola Maria |
| description | Here, we report the production of silk incorporating graphene and carbon nanotubes directly by spider spinning, after spraying spiders with the corresponding aqueous dispersions. We observe a significant increment of the mechanical properties with respect to the pristine silk, in terms of fracture strength, Young's and toughness moduli. We measure a fracture strength up to 5.4 GPa, a Young's modulus up to 47.8 GPa and a toughness modulus up to 2.1 GPa, or 1567 J/g, which, to the best of our knowledge, is the highest reported to date, even when compared to the current toughest knotted fibres. This approach could be extended to other animals and plants and could lead to a new class of bionic materials for ultimate applications. |
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We observe a significant increment of the mechanical properties with respect to the pristine silk, in terms of fracture strength, Young's and toughness moduli. We measure a fracture strength up to 5.4 GPa, a Young's modulus up to 47.8 GPa and a toughness modulus up to 2.1 GPa, or 1567 J/g, which, to the best of our knowledge, is the highest reported to date, even when compared to the current toughest knotted fibres. This approach could be extended to other animals and plants and could lead to a new class of bionic materials for ultimate applications.</description><identifier>EISSN: 2331-8422</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Bionics ; Carbon nanotubes ; Fracture strength ; Fracture toughness ; Graphene ; Mechanical properties ; Modulus of elasticity ; Nanotubes ; Plants (botany) ; Silk ; Spiders ; Spinning (materials) ; Spraying</subject><ispartof>arXiv.org, 2015-04</ispartof><rights>2015. 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| language | eng |
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| subjects | Bionics Carbon nanotubes Fracture strength Fracture toughness Graphene Mechanical properties Modulus of elasticity Nanotubes Plants (botany) Silk Spiders Spinning (materials) Spraying |
| title | Silk reinforced with graphene or carbon nanotubes spun by spiders |
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