title: Effect of cutting and functionalization of single-walled carbon nanotubes on their dispersion behaviors.
abstract: Cutting of single-walled carbon nanotubes (SWCNTs) and their modification with poly (ethylene glycol) and polystyrene were successfully performed through a treatment of the SWCNTs with piranha solutions and monoamine terminated polymers. The shortening and functionalization of SWCNTs were confirmed through size exclusion chromatography and Raman spectroscopy observations. The shortened SWCNTs exhibited more aggregated morphology than as-prepared SWCNTs in scanning electron microscope and atomic force microscope observations. Cutting and functionalization of SWCNTs with different polymer chains effectively tailored their dispersion behaviors in solvents. Polystyrene composite films exhibited improved transparency employing shortened SWCNTs, suggesting that the size of SWCNTs are critical factors in controlling the transparency of polymer composite films.
authors.affiliation: Department of Nano Science and Technology, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul 143-747, Republic of Korea.
authors.forename: Soon Huat
authors.initials: SH
authors.lastname: Tan
authors.forename: Youngjin
authors.initials: Y
authors.lastname: Cho
authors.forename: Wonmok
authors.initials: W
authors.lastname: Lee
authors.forename: Naesung
authors.initials: N
authors.lastname: Lee
authors.forename: Sung Chul
authors.initials: SC
authors.lastname: Hong
mesh_terms: D003102:Colloids / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012995:Solubility; D013499:Surface Properties
chemical_list: D003102:Colloids; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon