STRUCTURAL INVESTIGATION OF CONDUCTING POLYTHIOPHENE COMPOSITES

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					           STRUCTURAL INVESTIGATION OF CONDUCTING
                 POLYTHIOPHENE COMPOSITES
   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: nvshirbhate@rediffmail.com , spyawale@rediffmail.com

Abstract:

                      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).

				
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