Production of stable aqueous dispersions of carbon nanotubes

Details Production of stable aqueous dispersions of carbon nanotubes Production of stable aqueous dispersions of carbon nanotubes

D - Textiles, Paper

01

F

D01F 9/12 (2006.01)

Patent

CA 2453395

Methods of producing stable disperions of single-walled carbon nanotube structures in solutions are achieved utilizing dispersal agents. The dispersal agents are effective in substantially solubilizing and dispersing single- walled carbon nanotube structures in aqueous solutions by coating the structures and increasing the surface interaction between the structures and water. Exemplary agents suitable for dispersing nanotube structures in aqueous solutions include synthetic and natural detergents having high surfactant properties, deoxycholates, cyclodextrins, chaotropic salts and ion pairing agents. The dispersed nanotube structures may further be deposited on a suitable surface in isolated and individualized form to facilitate easy characterization and further processing of the structures.

L'invention concerne des procédés de production de dispersions stables de structures de nanotubes de carbone à paroi unique, en solutions qui sont obtenues en utilisant des agents de dispersion. Ces agents de dispersion permettent de solubiliser et de disperser des structures de nanotubes en carbone à simple paroi dans des solutions aqueuses en recouvrant ces structures et en augmentant l'interaction de surface entre les structures et l'eau. Des agents appropriés donnés à titre d'exemple pour disperser les structures de nanotubes dans des solutions aqueuses comprennent des détergents de synthèse et naturels présentant des propriétés de tensioactifs élevées, des désoxycholates, des cyclodextrines, des sels chaotropiques et des agents d'appariements d'ions. Les structures de nanotubes dispersées peuvent, en outre, être déposées sous forme isolée et individualisée pour faciliter la caractérisation aisée et en outre, le traitement de ces structures.

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