Effect of plasticizer on structural and electrical properties of nanocomposite solid polymer electrolytes |
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Authors: | Dillip K Pradhan B K Samantaray R N P Choudhary N K Karan Reji Thomas R S Katiyar |
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Institution: | (1) Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, PR 00931, USA;(2) Department of Physics, Indian Institute of Technology, Kharagpur, 721302, India; |
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Abstract: | The solid polymer electrolyte films based on polyethylene oxide, NaClO4 with dodecyl amine modified montmorillonite as filler, and polyethylene glycol as plasticizer were prepared by a tape casting
method. The effect of plasticization on structural, microstructural, and electrical properties of the materials has been investigated.
A systematic change in the structural and microstructural properties of plasticized polymer nanocomposite electrolytes (PPNCEs)
on addition of plasticizer was observed in our X-ray diffraction pattern and scanning electron microscopy micrographs. Complex
impedance analysis technique was used to calculate the electrical properties of the nanocomposites. Addition of plasticizer
has resulted in the lowering of the glass transition temperature, effective dissociation of the salt, and enhancement in the
electrical conductivity. The maximum value of conductivity obtained was ∼4.4 × 10−6 S cm−1 (on addition of ∼20% plasticizer), which is an order of magnitude higher than that of pure polymer nanocomposite electrolyte
films (2.82 × 10−7 S cm−1). The enhancement in conductivity on plasticization was well correlated with the change in other physical properties. |
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