Nano Archive

Effects of gamma irradiation for sterilization on aqueous dispersions of length sorted carbon nanotubes

Fagan, Jeffrey A. and Lin, Nancy J. and Zeisler, Rolf and Hight Walker, Angela R. (2011) Effects of gamma irradiation for sterilization on aqueous dispersions of length sorted carbon nanotubes. Nano Research, 4 (4). pp. 393-404. ISSN 1998-0124 (Print) 1998-0000 (Online)

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://www.springerlink.com/content/j2075165848332...

Abstract

There is currently great interest in the potential use of carbon nanotubes as delivery vessels for nanotherapeutics and other medical applications. However, no data are available on the effects of sterilization methods on the properties of nanotube dispersions, the form in which most medical applications will be processed. Here we show the effects of gamma irradiation from a 60Co source on the dispersion and optical properties of single-wall carbon nanotubes in aqueous dispersion. Samples of different length-refined populations were sealed in ampoules and exposed to a dose of approximately 28 kGy, a level sufficient to ensure sterility of the dispersions. In contrast to literature results for solid-phase nanotube samples, the effects of gamma irradiation on the dispersion and optical properties of the nanotube samples were found to be minimal. Based on these results, gamma irradiation appears sufficiently non-destructive to be industrially useful for the sterilization of nanotube dispersions.

Item Type:Article
Subjects:Physical Science > Nanophysics
ID Code:10688
Deposited By:M T V
Deposited On:09 May 2011 10:19
Last Modified:09 May 2011 10:19

Repository Staff Only: item control page