Dispersion of carbon nanotubes by chitosan and its cytotoxicity

Author

Wang, Yang ; Shan, Yan ; Xu, Jia ; Chen, Kezheng ; Zou, Min

Author_Institution

Coll. of Mater. Sci. & Eng., Qingdao Univ. of Sci. & Technol., Qingdao, China

fYear

2011

fDate

24-26 June 2011

Firstpage

7482

Lastpage

7485

Abstract

Stable dispersion of multi-walled carbon nanotubes (MWNTs) has been prepared by using chitosan (CS) as dispersant, and it was quantitatively characterized by UV-Vis-NIR Spectrophotometer. When the sediment time reaches 375 hours, the supernatant concentration of MWNTs declines 18 % for the bare MWNTs suspension, compared with 6.5 % for the MWNTs dispersed by CS. Morphologies of MWNTs were observed by scanning electron micrograph (SEM) and atomic force microscope (AFM) in detail. The results of AFM clearly show the CS is wrapped on the wall of MWNTs. Finally, we study that the cytotoxicity of MWNTs dispersed by CS on cancer cells. Our results show that MWNTs dispersed by CS have no obvious cytotoxicity on Hela cells.

Keywords

atomic force microscopy; cancer; carbon nanotubes; filled polymers; nanocomposites; nanofabrication; scanning electron microscopy; suspensions; toxicology; ultraviolet spectra; visible spectra; AFM; C; Hela cells; UV-visible spectroscopy; atomic force microscopy; cancer cells; chitosan; cytotoxicity; dispersions; morphology; multiwalled carbon nanotubes; scanning electron microscopy; supernatant concentration; suspensions; Atomic force microscopy; Carbon nanotubes; Dispersion; Materials; Scanning electron microscopy; Suspensions; carbon nanotube; chitosan; cytotoxicity; dispersion;

fLanguage

English

Publisher

ieee

Conference_Titel

Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9172-8

Type

conf

DOI

10.1109/RSETE.2011.5966101

Filename

5966101