Characterization on conduction properties of carboxymethyl cellulose/kappa carrageenan blend-based polymer electrolyte system

ABSTRACT

The present work deals with the development of carboxymethyl cellulose (CMC) blended with kappa carrageenan (KC) as a host-based polymer electrolyte (PE) system. The CMC/KC films were successfully prepared using solution casting method and were characterized through electrical impedance spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) methods, respectively. The FTIR spectrum revealed that the significant region of interaction transpires at wave number 1,057, 1,326, 1,584, and 3,387 cm⁻¹ which correspond to the bending of C–O–C, bending of –OH, asymmetric of –COO⁻ as well as the stretching of –OH, respectively. It has also been demonstrated that the complexation process occurred between CMC and KC. The CMC/KC blend PE system with a ratio of 80:20 achieved an optimum conductivity of 3.91 × 10⁻⁷ S cm⁻¹ and had the lowest crystallinity percentage as suggested by the XRD analysis.

KEYWORDS:

• Blending method
• CMC/KC polymer blend
• ionic conductivity

Acknowledgment

The authors would like to thank UMP internal grant (RDU: 150324) and MOHE for FRGS grant (RDU: 170115), Faculty Industrial Science & Technology, Universiti Malaysia Pahang laboratory staff for the technical and research support.

Additional information

Funding

This work was supported by the Ministry of Higher Education, Malaysia [Grant Number RDU170115] and Universiti Malaysia Pahang [Grant Number RDU1703189].