Table 3.

Assignment of FT-IR spectra of the regenerated cellulose fibers with or without additives.

Wavenumber (cm−1)	Bond and Functional Group	Reference
3600~3100	O-H stretching bond of hydrogen bonds of cellulose	[29,54,55,56]
2940~2840	-CH stretching bond of cellulose	[50,57]
1650	H-O-H bending of the water	[42,50]
1500~1200	-OH in plane bending of cellulose II	[57]
1430	-CH2 bending or scissoring motions in cellulose	[29,47]
1315~1338	O-H in-plane bending of the crystalline of cellulose II	[29]
1135~1180	deformations C-O-C groups of cellulose	[42,55]
1050	C-O stretching of internal hydrogen bonds between cellulose	[58]
897	β-glycosidic linkages between the sugar units of cellulose II	[42,57]