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Effect of montmorillonite filler on structural and electrical properties of polymer nanocomposite electrolytes

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Abstract

Polymer–clay nanocomposites consisting of polymer (polyethylene oxide) and NaI as salt with different concentration of organically modified Na+-montmorillonite (DMMT) have been fabricated and characterized. X-ray diffraction analysis shows that the polymer–salt complexes have been intercalated into the nanometric silicate layers of DMMT. Fourier transform infrared analysis shows that the polymer structure in the clay interlayer is similar to that of the polymer–salt complexes, and there is a strong interaction between the polymer–salt complexes and clay layers. A study of surface morphology using scanning electron microscopy reveals that microstructure of composites is affected by clay addition. Complex impedance analysis was used to calculate the bulk resistance of the composites. An enhancement in the conductivity of about one order of magnitude has been observed on 5% clay addition compared to that of the polymer–salt complexes, and it decreases monotonically for higher clay concentration. The effect of clay concentration on the structural and physical properties of polymer nanocomposites is well correlated.

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Acknowledgment

We are thankful to Prof. S. K. Srivastava, Department of Chemistry, I. I. T. Kharagpur-721302-India, and Mr. N. K. Karan, Department of Physics, University of Puerto Rico, San Juan, PR 00931 (USA) for some help in experimental work.

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Authors and Affiliations

  1. Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur, 721302, India

    Dillip K. Pradhan, R. N. P. Choudhary, B. K. Samantaray & Awalendra K. Thakur

  2. Department of Physics, University of Puerto Rico, San Juan, PR, 00931, USA

    R. S. Katiyar

Authors
  1. Dillip K. Pradhan
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  2. R. N. P. Choudhary
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  3. B. K. Samantaray
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  4. Awalendra K. Thakur
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  5. R. S. Katiyar
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Correspondence to R. N. P. Choudhary.

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Pradhan, D.K., Choudhary, R.N.P., Samantaray, B.K. et al. Effect of montmorillonite filler on structural and electrical properties of polymer nanocomposite electrolytes. Ionics 15, 345–352 (2009). https://doi.org/10.1007/s11581-008-0271-7

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  • DOI: https://doi.org/10.1007/s11581-008-0271-7

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