Core/shell, protuberance-free multiwalled carbon nanotube/polyaniline nanocomposites via interfacial chemistry of aryl diazonium salts
详细信息 查看全文
- 作者：Ahmed Mekki ; Soumen Samanta ; Ajay Singh ; Zakaria Salmi ; Rachid Mahmoud ; Mohamed M. Chehimi ; Dinesh K. Aswal
- 关键词：Aryl diazonium salts ; Carbon nanotubes ; Polyaniline ; Nanocomposites
- 刊名：Journal of Colloid and Interface Science
- 出版年：15 March, 2014
- 年：2014
- 卷：418
- 期：Complete
- 页码：185-192
- 全文大小：2209 K
文摘
Highly uniform core-shell like multi-walled carbon nanotubes-polyaniline (MWCNT-PANI) nanocomposites were prepared in two steps (i) surface modification of MWCNTs with a 4-aminodiphenylamine group via in situ diazonium generation process; and (ii) polymerization of aniline onto surface modified MWCNTs. This functionalization helped to easily disperse the MWCNTs in acidic solutions; hence it is suitable for the chemical oxidative polymerization of aniline. It was found that MWCNT-PANI nano-composites with higher MWCNTs loading yield PANI chains with more quinoid units than the pure PANI, which results in significant improvement in the conductivity of the composites. This facile approach of synthesizing core-shell nanocomposites highlights the efficiency of the interfacial chemistry of aryl diazonium salts in generating conductive polymer/MWCNT nanocomposites with enhanced conductivity and high surface area.