Conductivity and Thermal Behaviour of Epoxidized-30% Poly (Methyl Methacrylate)-Grafted Natural Rubber-Lithium Triflate Based Solid Polymer Electrolytes

Abstract

Thin films of epoxidized-30% poly (methyl methacrylate)-grafted natural rubber (EMG30) doped with lithium triflate (LiTf) salt were prepared by using the solution-casting technique. Transformation of carbon double bond (C=C) into epoxide group (C-O-C) in EMG30 polymer host was confirmed by 1HNMR analysis. The ionic conductivity measurement was carried out and the highest conductivity was found to be at 5.843×10-3 S cm room temperature for the sample with composition at 60wt% EMG30: 40wt% LiTf. Thermal gravimetric analysis studies showed that upon the addition of lithium salts into EMG30 was increased the thermal stability of the polymer electrolyte systems.

Electrochemical Properties of Polymer Electrolytes Treated With 6ppd on 30% Poly(methyl Methacrylate) Grafted Natural Rubber

“…Until today research has been geared to enhance the electrolytes properties of MNR particularly to obtain high ionic conductivity at room temperature with better mechanical properties. Various MNR has been used such as by using epoxidized natural rubber (ENR-25 and ENR-50) [2][3][4][5] and methyl grafted natural rubber (MG49 and MG30) [6][7][8][9][10] as a polymer host to produce PEs. The introduction of metal oxide inorganic filler such as TiO 2 , SiO 2 and Al 2 O 3 also was reported successfully enhanced the mechanical properties and improve ionic conductivity at room temperature [11][12][13].…”