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http://nopr.niscpr.res.in/handle/123456789/11620| Title: | Thermal and conducting behaviour of emeraldine base (EB) form of polyaniline (PANI) |
| Authors: | Chauhan, Narendra P S Ameta, Rakshit Ameta, Rohit Ameta, Suresh C |
| Keywords: | Conducting polymer;Polyaniline-emeraldine base;Two-probe conductivity method;Differential scanning calorimetry |
| Issue Date: | Mar-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Emeraldine base (EB) form of polyaniline (PANI) powder is prepared by chemical oxidative polymerization using different acidic media (HCl or CF3COOH) at different temperatures (-15°C to + 5°C). The chemical structure, thermal characterization and conducting behaviour are studied by means of Fourier transform infra-red (FTIR) spectroscopy, differential scanning calorimetery (DSC) and two-probe conductivity method. These polyanilines are soluble in N-methyl-2-pyrrolidone, dimethyl sulfoxide (DMSO) and dimethylpropylene urea (DMPU). The softening temperatures of different EB range from 87.8-116.4°C, which is believed to be an indication of cross-linking. Conductivity of emeraldine base of PANI is around (0.8-1.5) × 10-6 S/cm and energy band gap is approximately 0.5 eV, and no detectable crystallinity is observed. Wide-angle XRD technique indicates that PANI- EB base is amorphous in nature. |
| Page(s): | 118-122 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Appears in Collections: | IJCT Vol.18(2) [March 2011] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCT 18(2) 118-122.pdf | 199.77 kB | Adobe PDF | View/Open |
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