Effects of Gamma Irradiation for Sterilization on Aqueous Dispersions of Length Sorted Carbon Nanotubes

作     者：Jeffrey A. Fagan Nancy J. Lin Rolf Zeisler Angela R. Hight Walker 

作者机构：Polymers Division National Institute of Standards and Technology Gaithersburg MD 20899 USA Analytical Chemistry Division National Institute of Standards and Technology Gaithersburg MD 20899 USA Optical Technology Division. National Institute of Standards and Technology Gaithersburg MD 20899. USA 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2011年第4卷第4期

页      面：393-404页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：Nanotube single-wall nanotube (SWNT) single-wall carbon nanotube (SWCNT) gamma irradiation sterilization dispersion 

摘      要：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.