Carbon nanotube fiber spun from wetted ribbon
First Claim
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1. A method for spinning a fiber of carbon nanotubes, comprising:
- drawing carbon nanotubes away from a substantially aligned, supported array of carbon nanotubes to form a ribbon,wetting the ribbon of carbon nanotubes with a liquid to form a wetted ribbon of carbon nanotubes, andspinning a fiber from said wetted ribbon of carbon nanotubes, wherein spinning comprises twisting wetted carbon nanotubes of the wetted ribbon around each other as carbon nanotubes are drawn away from said substantially aligned, supported array of carbon nanotubes.
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Abstract
A fiber of carbon nanotubes was prepared by a wet-spinning method involving drawing carbon nanotubes away from a substantially aligned, supported array of carbon nanotubes to form a ribbon, wetting the ribbon with a liquid, and spinning a fiber from the wetted ribbon. The liquid can be a polymer solution and after forming the fiber, the polymer can be cured. The resulting fiber has a higher tensile strength and higher conductivity compared to dry-spun fibers and to wet-spun fibers prepared by other methods.
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Citations
20 Claims
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1. A method for spinning a fiber of carbon nanotubes, comprising:
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drawing carbon nanotubes away from a substantially aligned, supported array of carbon nanotubes to form a ribbon, wetting the ribbon of carbon nanotubes with a liquid to form a wetted ribbon of carbon nanotubes, and spinning a fiber from said wetted ribbon of carbon nanotubes, wherein spinning comprises twisting wetted carbon nanotubes of the wetted ribbon around each other as carbon nanotubes are drawn away from said substantially aligned, supported array of carbon nanotubes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A fiber of carbon nanotubes prepared by a method comprising:
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drawing carbon nanotubes away from a substantially aligned, supported array of carbon nanotubes to form a ribbon, the majority of the carbon nanotubes being double-walled carbon nanotubes, wetting the ribbon with a liquid comprising a polymer to form a wetted ribbon, spinning a fiber from wetted ribbon, wherein spinning comprises twisting the carbon nanotubes of the wetted ribbon around each other as the carbon nanotubes are drawn away from the substantially aligned, supported array of carbon nanotubes, and thereafter heating the fiber for a period of time and at a temperature sufficient to cure the polymer, resulting in the fiber having a tensile strength of at least 0.90 GPa. - View Dependent Claims (19, 20)
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Specification