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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.11 [2004] >
IJCT Vol.11(1) [January 2004] >
| Title: | Preparation, characterization and conductivity measurement of poly(4-vinyl pyridinium) salts in solid state |
| Authors: | Chetia, Jitu Ranjan
Moulick, Manoranjan
Dutta, Aradhana |
| Issue Date: | Jan-2004 |
| Publisher: | CSIR |
| IPC Code: | C08F26/00 |
| Abstract: | The conductivity and the
conduction behaviour of poly (4-vinyl pyridine), poly (4-vinyl pyridinium)
bromide and poly (4-vinyl pyridinium) iodide have been reported.
4-vinylpyridine (4VP) is polymerized thermally and the salts are prepared by
acidification. The formation of P-4VP salts is confirmed by NMR and analytical
method. Electrical conductivities are studied by impedance spectroscopic
technique in the temperature range 30 to 90°C at various frequencies in solid
state. It is observed that addition of ion increases the ionic conductivity of
the polymer with respect to frequency and temperature. There is about 102
to 103 fold increase in conductivity for the new polymer salts. The
new materials are shown to be predominantly ionic conductor with tion≈ 0.935 and 0.825 for bromide and iodide salt respectively. Apparent activation
energies are determined from logs versus 1000/T curves and found to
be 0.075, 0.049 and 0.123 eV for poly(4-vinyl pyridine), its bromide and iodide
salt respectively. The polymer salts behave as good polyelectrolyte. |
| Page(s): | 80-84 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.11(1) [January 2004]
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