期刊
MATERIALS LETTERS
卷 65, 期 23-24, 页码 3601-3604出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2011.08.021
关键词
Polyaniline; Mixed surfactants; Microstructure; Electrical properties
资金
- National Natural Science Foundation of China [21001037]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20092302120073]
- Fundamental Research Funds for the Central Universities [HIT. NSRIF.2009058]
Mixed surfactant solution, containing cetyltrimethyl ammonium bromide (CTAB) and sodium dodecylbenzyl sulfonate (SDBS), is used to prepare polyaniline (PANI) with soft 1D structure and high electrical conductivity. The mixed surfactants in the reaction play double roles of soft templates and dispersion reagents. The influence of CTAB-SDBS ratio on the morphology and conductive property of PANI is investigated. Through varying the proportion of surfactants, uniformly branched nanofibers with higher aspect ratio and good dispersion are obtained, which possess the highest conductivity (0.102 S.cm(-1)). Moreover, FT-IR spectra are measured to explain the change of structure and conductivity under assistance of mixed surfactants. As a result, the mixed surfactants have significant effect on the electron density of whole structure as well as the PANI molecular orientation. (C) 2011 Elsevier B.V. All rights reserved.
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