Modification of carbon nanotubes by oxidation with peroxygen...

Details Modification of carbon nanotubes by oxidation with peroxygen... Modification of carbon nanotubes by oxidation with peroxygen...

D - Textiles, Paper

01

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D01F 9/12 (2006.01) D01F 11/12 (2006.01)

Patent

CA 2446923

A method of chemically modifying carbon nanotubes having a diameter less than one micron comprising: contacting the nanotubes with a peroxygen compound selected from the group consisting of organic peroxyacids, inorganic peroxoacids and organic hydroperoxides, or a salt thereof, under oxidation conditions and thereby producing modified carbon nanotubes. Oxidation of the nanotubes increases the degree of dispersion of aggregates of nanotubes and aids in the disassembling of such aggregates. The dispersed nanotubes are used to prepare rigid structures and can be used in electrodes and capacitors.

La présente invention concerne un procédé de modification chimique de nanotubes de carbone possédant un diamètre inférieur à un micron. Ce procédé consiste à mettre ces nanotubes en contact avec un composé peroxygéné sélectionné dans le groupe constitué de péroxyacides organiques, de peroxyacides inorganiques et d'hydroperoxydes organiques ou d'un sel de ceux-ci, dans des conditions d'oxydation et à produire ainsi des nanotubes de carbone modifiés. L'oxydation des nanotubes augmente le degré de dispersion d'aggrégats de nanotubes et favorise le désassemblage de ces aggrégats. On utilise les nanotubes dispersés pour préparer des structures rigides et on peut les utiliser dans des électrodes et des condensateurs

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