期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 69, 期 15-16, 页码 2559-2565出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2009.07.013
关键词
Polymers; Carbon nanotubes; Thermal properties; Electrical properties; Electrostatic interaction
资金
- National Science Council [NSC96-2221-E-005-049-MY3]
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.
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