In the present research program, we have described the synthesis of acid doped polymetanitroaniline (PMNA) with carboxylic groups containing multiwalled carbon nanotubes (c-MWNTs) via in situ polymerization. Meta-nitroaniline monomer was adsorbed on the surface of MWNTs and polymerized to form PMNA/ c-MWNT composites. The structure of PMNA/c-MWNT composites were characterized by UV-vis spectra, FTIR, and X-ray diffraction patterns. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) images showed that both the thinner fibrous phase and the larger block phase could be observed. The individual fibrous phases had diameters about 100 nm, and therefore must be the carbon nanotubes (diameter 10-20 nm) coated by a PMNA layer. The electrical conductivities of PMNA/c-MWNT increased with the increase of c-MWNT content.
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