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|標題:||Synthesis and characterization of externally doped sulfonated polyaniline/multi-walled carbon nanotube composites||作者:||Lin, Y.W.
|關鍵字:||Polymers;Carbon nanotubes;Thermal properties;Electrical properties;Electrostatic interaction;soluble conducting polymer;electrical-properties;orthanilic acid;mild-steel;nanocomposites;copolymers;electrode||Project:||Composites Science and Technology||期刊/報告no：:||Composites Science and Technology, Volume 69, Issue 15-16, Page(s) 2559-2565.||摘要:||
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 COO(-) species of the c-MWCNTs. The addition of c-MWCNT to ED-SPANI can improve its thermal stability. The conductivity of 3 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. (C) 2009 Elsevier Ltd. All rights reserved.
|Appears in Collections:||材料科學與工程學系|
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