| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7216018 | Composites Science and Technology | 2009 | 7 Pages |
Abstract
Composites of carbon nanotubes with attached carboxylic groups (c-MWCNTs) and water-soluble externally doped sulfonated polyaniline (ED-SPANI) were prepared by solution mixing of c-MWCNT and ED-SPANI aqueous colloids. Fourier-transform infrared spectroscopy, Raman spectroscopy, ultraviolet-visible (UV-Vis) absorption spectroscopy, field-emission scanning and high-resolution transmission electron microscopy were used to characterize their structure and morphology. Raman and UV-Vis spectra revealed the presence of electrostatic interaction between the C-N+ species of the ED-SPANI and the COOâ species of the c-MWCNTs. The addition of c-MWCNT to ED-SPANI can improve its thermal stability. The conductivity of 3Â wt.% ED-SPANI/c-MWCNT composites at room temperature is sixteen times higher than that of ED-SPANI. These results demonstrate that the addition of a small number of c-MWCNTs to an ED-SPANI matrix can form a conducting network in well dispersed composites, thus increasing their electrical conductivity.
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Engineering (General)
Authors
Yen-Wen Lin, Tzong-Ming Wu,