Improved ionic conductivity in guar gum succinate–based polymer electrolyte membrane. (October 2018)

• Record Type: Journal Article
• Authors: Azzahari, Ahmad Danial; Abdul Mutalib, Nur Fazilah; Rizwan, Muhammad; Naceur Abouloula, Cheyma; Selvanathan, Vidhya; Sonsudin, Faridah; Yahya, Rosiyah
• Other Names: Bhattacharya Bhaskar guest-editor.; Singh Pramod K guest-editor.
• Is Part Of: High performance polymers. Volume 30:Number 8(2018)
• Page Start: 993
• Page End: 1001
• Publication Date: 2018-10
• Subjects: Guar gum succinate -- solid polymer electrolyte -- electrochemical impedance spectroscopy -- Fourier transform infrared spectroscopy; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/0954008318775790
• Languages: English
• ISSNs: 0954-0083

Abstract

Guar gum succinate (GGS) was chemically modified by reacting guar gum with succinic anhydride in the presence of 4-dimethylaminopyridine. Succination was confirmed by Fourier transform infrared (FTIR) spectroscopy with carbonyl bands at 1724 cm −1 and ester linkage at 1567 cm −1 of the succinate group. The resulting amorphous, GGS was used as a polymer host to prepare cost-effective solid polymer electrolyte (SPE) films via incorporating a blend of ethylene carbonate (EC), carboxymethyl cellulose (CMC), lithium triflate (LiTf) and lithium iodide (LiI). SPE system for GGS:EC (1.0:0.6) with 30 wt% LiTf showed highest conductivity of 6.29 × 10 −5 S cm −1 and GGS:CMC:EC (0.5:0.5:0.6) with 25 wt% LiI showed highest conductivity of 2.10 × 10 −4 S cm −1 . FTIR revealed multiple complexation sites for ion mobility indicating that GGS possesses high prospects as a conductive SPE.