STRUCTURAL INVESTIGATION OF CONDUCTING
N.V.Shirbhate*, S.P. Yawale@ , S.V.Tambakhe* , R.S.Bobale+, S.V. Pakade (Yawale)#
* Sipna’s College of Engineering & Technology, Amravati- 444605, India.
Materials Research Laboratory, P.G. Department of Physics, Govt. Vidarbha Institute of Science &
Humanities, Amravati.-444604, India.
+ Prof. Ram Meghe Institute of Technology & Research Badnera, Amravati-444701
E-mail: email@example.com , firstname.lastname@example.org
Chemical oxidative polymerization with ZnCl2 as oxidant, in
methanol solvent at room temperature, Polythiophene (PTh) - Polyvinyl acetate (PVAc)
composite films were prepared. In this study DC conductivity as a function of
temperature was measured. An attempt has been made to investigate the effect of
temperature and concentration of ZnCl2 oxidant on the conductivity of Polythiophene and
Polyvinyl acetate composite films. For fixed wt. % of PVAc, the DC electrical
conductivity initially increases with the molar concentration of ZnCl2 which is due to
increase in strength of the oxidizing agent, which increases the rate of polymerization and
then decreases with further increase in concentration of ZnCl2 due to reduced segmental
motion of the polymer.
The FTIR spectra reveal that the structure remains same throughout the series. The
small shift in the observed peak frequencies is due to composition change, but the overall
trend of the IR spectra is same. From the finger print region it is observed that the
terminal branching is completely absent. The ionic transference number is calculated
from the polarization current versues time plot. Ionic contribution is found to be
dominant. The TG curves of the samples show single step degradation.
# Author S.V.Pakade (Yawale) is presently working as Director, Pre Indian
Administrative Services Training Center, Nagpure – 440 001 (India).