Phase Separation of Carbon Nanotubes and Turbostratic Graphite Using a Functional Organic Polymer (pages 213–216)
J. N. Coleman, A. B. Dalton, S. Curran, A. Rubio, A. P. Davey, A. Drury, B. McCarthy, B. Lahr, P. M. Ajayan, S. Roth, R. C. Barklie and W. J. Blau
Article first published online: 24 JAN 2000 | DOI: 10.1002/(SICI)1521-4095(200002)12:3<213::AID-ADMA213>3.0.CO;2-D
Nanotubes are rich in potential applications, but they are very difficult to purify, and yields are often less than 1 %. The solution presented here is to suspend nanotubes in a polymer matrix, which then acts as a filtration system. Incorporation is achieved by sonication, followed by a period of settling, during which the amorphous material falls out, leaving a highly pure sample of nanotubes (see Figure) that contains virtually no other carbonaceous material.