文献类型：期刊文献

英文题名：Poly(aniline-2-sulfonic acid) modified multiwalled carbon nanotubes with good aqueous dispersibility

作者：Wang, Gengchao[1]; Ding, Yunli[1]; Wang, Fei[1]; Li, Xingwei[1]; Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat Minist Educ, Shanghai 200237, Peoples R China

年份：2008

卷号：317

期号：1

起止页码：199

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20074610923650);WOS:【SCI-EXPANDED(收录号:WOS:000251283100024)】；

语种：英文

外文关键词：carbon nanotubes; poly(aniline-2-sulfonic acid); aqueous dispersibility; FTIR

摘要：Poly(aniline-2-sulfonic acid) (PASA)-modified multimalled carbon nanotubes (MWNTs) were prepared by in situ oxidative polymerization. HRTEM images show that the PASA-modified MWNTs (PASANTs) are core (MWNT)-shell (PASA) tubular structures with a shell thickness of several nanometers. The strong interaction between the surface of the MWNTs and the conjugated structure of the PASA shell layer was proven by FTIR spectra. It was found that the aqueous dispersibility and dispersion stability of PASANTs were significantly improved compared to those of the raw MWNTs. Furthermore, when the PASA content is greater than 30 wt%, no precipitation is found for the dispersions of modified MWNTs after sedimentation for 500 h, exhibiting an excellent stability. The electrical conductivity of these modified MWNTs is 2-5 times higher than that of raw MWNTs and is 103 times higher than that of PASA. (c) 2007 Elsevier Inc. All rights reserved.