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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.47 [2009] >
IJPAP Vol.47(09) [September 2009] >
| Title: | Electrical and optical properties of poly(aniline-co-8-anilino-1-napthalene sulphonic acid) — A material for ESD applications |
| Authors: | Bansal, Vineet
Bhandari, Hema
Bansal, M C
Dhawan, S K |
| Keywords: | Conducting polymer
Polyaniline
Poly(aniline-co-8-anilino-1-napthalenesulphonic acid)
Conductivity
Electrostatic charge dissipation |
| Issue Date: | Sep-2009 |
| Publisher: | CSIR |
| Abstract: | The homopolymer of aniline (An) and its copolymer with 8-anilino-1-napthalene
suplhonic acid (8-ANSA) was synthesized by chemical oxidative as well as
electrochemical polymerization process in the presence of para-toluene sulphonic acid (PTSA) as a dopant. The spectral,
thermal, morphological and electrochemical properties of PTSA doped polyaniline
and its copolymer (An-co-8-ANSA) were studied and compared to elucidate the
effect of the inclusion of
8-ANSA in the copolymer feed. The resultant copolymer showed better solubility
and processibility but this approach usually results in the lowering of
conductivity, hence the ratio of aniline and 8-ANSA in the copolymer feed was
selected to 80:20. The room
temperature conductivity of the PTSA doped polyaniline (PANI-PTS) and poly(An-co-8-ANSA)
in 80:20 was found to be in the order of 1.74 S/cm to 9.77×10-1 S/cm, respectively. Conductivity mechanism of charge transport has been investigated in the
range 30-300K. In the temperature range 30-70 K, copolymer showed tunneling
mechanism. However, above 70 K conductivity attributes to Mott’s
variable range hopping (VRH) mechanism. The electrochemical
behaviour of the polymers was studied by cyclic voltametry. The structure of
the copolymer is characterized by 1H NMR spectroscopy, UV-visible
and FTIR spectroscopy. Electrostatic charge dissipation (ESD) of the conducting
copolymer blend was also studied by blending of 1% of
PTSA doped polyaniline and poly(aniline-co-8-ANSA) with LDPE which shows a
static decay time of 0.1 to 0.25 sec on dissipating the charge from 5000 to 500
V. |
| Page(s): | 667-675 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.47(09) [September 2009]
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