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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(06) [June 2010] >
| Title: | Electrical and optical properties of polyaniline polyvinyl alcohol composite films |
| Authors: | Bhadra, J
Sarkar, D |
| Keywords: | Polyaniline
Composite
Crystallinity
Microstructure
Electrical properties |
| Issue Date: | Jun-2010 |
| Publisher: | CSIR |
| Abstract: | Polyaniline
polyvinyl alcohol (PANI-PVA) composite films have been prepared chemically in
inorganic acid medium at different ratios of their monomer units. A homogeneous
blend can be obtained even using inorganic acid medium by terminating the
reaction soon after the mixture attains homogeneous colour change. The SEM
pictures show that the films have well formed grains with approximate sizes
ranging from 0.3 to 1.2  m. The results show definite dependence of various
parameters on the PANI-PVA ratio in the blend. The XRD spectra show
increase in crystallinity in the films with increase of PVA concentration. The
FTIR spectra show some peaks, which ascertain chemical interlinking of PANI and
PVA in these blends. The studies of electrical conductivity of these films
through measurement of current-voltage
(I-V) characteristics show non-ohmic power law behaviour (I a Vn) with power (n) lying in the
range 0.22 to 0.88. The conductivity value of these films is found to be
between 1.80 to 0.9 S cm-1. |
| Page(s): | 425-428 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(06) [June 2010]
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