STM Journals Peer-reviewed research from Consortium e-Learning Network

Journal of Polymer & Composites

Synthesis and Characterization of Polymer Blend Electrolyte Based on Bio-degradable Polymers Doped with Ammonium Iodide

  1. Bhavani Macha
  2. M. Prasad
  3. M Manikanta

Abstract

A polymer blend of Polyvinylalchohol (PVA) and Polyvinylpyrrilodine (PVP) doped with ammonium iodide (NH4I) has been prepared by solution casting method to develop a new solid polymer electrolyte. The influence of NH4I on the structural, electrical characteristics of PVA/PVP blend was investigated utilizing XRD, FTIR and impedance spectroscopy techniques. Structural properties were studied by using the XRD technique and found that the pure polymer blend is in semi crystalline form, due to the addition of NH4I the crystalline nature decreases, and amorphous nature increases with NH4I concentration. Maximum amorphous nature found at 25 wt.% NH4I. The complex formation between the polymer mix and NH4I was validated using FTIR spectroscopy. Electrical properties are studied by impedance analysis and observed the enhancement in electrical conductivity with addition of salt and found that the maximum dc conductivity at 25 wt. % is 1.34 × 10-5 S/cm and it decreases after 25wt.% of NH4I. It was found that, the conductivity increased with temperature.

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