Method for producing superhydrophobic carbon nanotube sheets
AssigneeTechnology Innovation Institute - Sole Proprietorship LLC
InventorsZainab Karam, Sunil Lonkar, Juveiriah M. Ashraf, Myriam Ghodhbane, Chiara Busa, Vincenzo Giannini
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Abstract
The present disclosure describes methods of producing superhydrophobic carbon nanotube sheets. The methods disclosed herein allow the rapid and scalable production of superhydrophobic carbon nanotube sheets that may remain on a substrate, or they may be removed from the substrate to produce freestanding superhydrophobic carbon nanotube sheets. The carbon nanotube sheets produced by the present methods were confirmed to be superhydrophobic by water droplet contact angle.
Claims13
A method for producing superhydrophobic carbon nanotube sheets, the method comprising steps of:
- providing a slurry of a carbon nanotube material dispersed in a solvent and contained in a reservoir, wherein the slurry comprises 0.2 wt. % to 0.7 wt. % carbon nanotube material and wherein the solvent comprises water and acetone in a ratio of 10:1 to 100:1, water and ethanol in a ratio of 10:1 to 100:1, or water and a mix of ethanol and acetone in a ratio of 10:1 to 100:1,
- dispensing the slurry of the carbon nanotube material onto a substrate with a dispenser which is connected to the reservoir to form a dispensed slurry,
- leveling the dispensed slurry with a doctoring member to form a coated substrate,
- heating the coated substrate for a time of 14 hours at a temperature of 90° C., and
- cooling the coated substrate to form a carbon nanotube sheet.
Dependencies are inferred from the claim text.