期刊
MATERIALS LETTERS
卷 164, 期 -, 页码 132-135出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.10.138
关键词
Polymeric composites; Carbon nanotubes; Polyaniline; Electrical properties; Thermoelectric properties
资金
- State Key Development Program for Basic Research of China [2012CB933200]
- National Natural Science Foundation of China [51172008, 51002006]
- National Natural Science Fund Innovation Group [51221163]
- Fundamental Research Funds for the Central Universities
Multi-wall carbon nanotubes/polyaniline (MWCNT/PANI) composites were prepared by the in situ polymerization at room temperature and in ice-water bath, respectively. Raman spectra and X-ray diffraction patterns showed that the molecular conformation and the degree of order of PANI were greatly affected by the synthesis temperature. In low temperature condition, quinoid units converted into benzenoid in PANI and meanwhile, the chain segments of MWCNT/PANI arranged in a more orderly arrangement, which resulted in a change of the conducting behavior from semiconductor to metallic and almost twice increase in conductivity. Power factor (PF) of both composites increased with the increase of MWCNTs content, and 66.7% higher PF value was obtained in metallic-like composite with 80 wt% MWCNTs loading. (C) 2015 Elsevier B.V. All rights reserved.
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