Effect of montmorillonite filler on structural and electrical properties of polymer nanocomposite electrolytes |
| |
Authors: | Dillip K Pradhan R N P Choudhary B K Samantaray Awalendra K Thakur R S Katiyar |
| |
Institution: | (1) Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur, 721302, India;(2) Department of Physics, University of Puerto Rico, San Juan, PR 00931, USA |
| |
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. |
| |
Keywords: | Polymer– clay nanocomposite Complex impedance spectroscopy XRD Electrical conductivity |
本文献已被 SpringerLink 等数据库收录! |
|