Structural, Thermal, and Electrical Properties of PVA-Sodium Salicylate Solid Composite Polymer Electrolyte

Table 1

FTIR band assignments of PVA-SS solid composite polymer electrolytes. The peaks assigned to PVA shifted to higher wavenumbers by increasing SS concentration.

Wavenumber (cm^−1)
Pure PVA	PVA : SS	PVA : SS	PVA : SS	PVA : SS	PVA : SS	Band assignments
	90 : 10	80 : 20	70 : 30	60 : 40	50 : 50
3294	3298	3309	3338	3399	3402	O–H groups
2934	2932	2930	2935	3066	3066	C–H stretching
1723	1722	1723	1721	—	—	C=O stretching
1427	1425	1451	1454	1461	1467	C–H bending
1372	1378	1379	1381	1373	1372	C–H wagging
1249	1253	1252	1254	1287	1286	C–C stretching
1084	1085	1085	1085	1080	1140	C–O stretching
944	944	946	—	—	—	C–H stretching
836	843	848	851	857	856	C–H rocking
—	1425–1628	1425–1628	1425–1628	1425–1628	1425–1628	Carboxylate moiety (COO^−)