Preparing a Styrenic Polymer Composite Containing Well-Dispersed Carbon Nanotubes: Anionic Polymerization of a Nanotube-Bound p-Methylstyrene
journal contributionposted on 27.01.2004, 00:00 by I-Chun Liu, Hsuan-Ming Huang, Ching-Yu Chang, Hung-Chieh Tsai, Chuan-Hsiao Hsu, Raymond Chien-Chao Tsiang
Multiple-walled carbon nanotubes (MWNTs) were chemically modified by a ligand-exchange reaction of ferrocene (Cp-Fe-Cp). The modified MWNTs (Cp-Fe-MWNTs) were next monolithiated by tert-butyllithium and terminated by p-chloromethylstyrene (pMS). The pMS-terminated species (pMS-Cp-Fe-MWNTs) were then functionalized with living polystyryllithium anions via anionic polymerization. The resulting polystyrene-functionalized MWNTs exhibited as polymeric nanocomposites and were soluble in common organic solvents showing distinct colors from a neat polystyrene solution. Syntheses results and the characterization data of the functionalized MWNTs, collected from GC-MS, NMR, electron microscopy, and optical spectroscopy, are presented and discussed.