Preparation and Characterization of Polymer Electrolyte of Glycidyl Methacrylate-Methyl Methacrylate-LiClO₄ Plasticized with Ethylene Carbonate

Table 1

Vibrational mode assignments of P(GMA-co-MMA)-25% LiClO₄ based polymer electrolyte with different percentage of EC.

Vibrational mode of P(GMA-co-MMA)	Wavenumber (cm^−1)
	0	20%	40%	60%	80%
C=O stretching of EC	—	1802, 1773	1801, 1771	1802, 1773	1801, 1772
Carbonyl group stretching	1712	1719	1719	1720	1720
Symmetric stretching of epoxy and ester group	1252, 1068, 850	1253, 1071, 566	1246, 1071, 875	1252, 1071, 890	1249, 1071, 896
Stretching C–O–O of ester group	1154	1153	1157	1153	1154
Asymmetric stretching of epoxy	906	903	901	902	903
C–H blending vibration of epoxide ring	748	749	748	749	748
C=O bending	—	718	718	718	718