Estudo das dispersões aquosas de nanotubos de carbono utilizando diferentes surfactantes Study of aqueous dispersions of carbon nanotubes using different surfactants

• Main Authors: Isabella R. da Silva, Pedro L. M. Barreto, Ismael C. Bellettini
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2013-01-01
• Series: Química Nova
• Subjects: carbon nanotube; surfactant; dispersion
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000100002
• ISSN: 0100-4042; 1678-7064

<abstract language="eng">The dispersion of carbon nanotubes in water for their utilization in nanoscale devices is a challenging task. Comparative studies on interaction and dispersion of multi-wall carbon nanotubes (MWNT) using two different surfactants (sodium dodecyl sulfate, SDS, and polyoxyethylenesorbitanmonooleate, Tween 80) are presented. The interaction between carbon nanotubes and surfactants was studied by tensiometry, conductivimetry, and fluorimetry. The dispersions of MWNT in surfactants were characterized using a UV-vis spectrophotometer. For effective dispersion, the minimum weight ratio of MWNT to surfactant was 1:41 and 1:3 for SDS and Tween 80, respectively.