Table 5.

Summary of important FTIR transmittance peaks in fire retardant (T2)-treated jute fibers.

Wavelength (cm−1)	Peak Details	Reference
3620–3630	OH	[52]
3300–3030/1430–13905	Ammonium ion	[27]
2800 to 3400	N–H stretching
2350	N–H
1730 to 2150	O–H stretching
1430	N–H bending
1100–1000	Phosphate ion
1050–990	Aliphatic phosphate (P–O–C stretch)
400	Aliphatic iodo compounds C-I
500

Note: 5 stands for the first transmittance which is intense and broad and the second has weak to medium intensity and narrow.