Characterization of ι -carrageenan and its derivative based green polymer electrolytes

Abstract

The new types of green polymer electrolytes based on ι -carrageenan derivative have been prepared. ι - carrageenan act as precursor was reacted with monochloroacetic acid to produce carboxymethyl ι -carrageenan. The powders were characterized by Attenuated Total Reflection Fourier Transform infrared (ATR-FTIR) spectroscopy and 1H nuclear magnetic resonance (NMR) to confirm the substitution of targeted functional group in ι -carrageenan. The green polymer electrolyte based on ι -carrageenan and carboxymethyl ι -carrageenan was prepared by solution-casting technique. The films were characterized by electrochemical impedance spectroscopy to determine the ionic conductivity. The ionic conductivity ι -carrageenan film were higher than carboxymethyl ι -carrageenan which 4.87 × 10-6 S cm-1 and 2.19 × 10-8 S cm -1, respectively. © 2014 AIP Publishing LLC.