Characterization of Thermal Properties of Highland Bamboo Fibers

Table 2

Characteristic bands for a functional group of untreated and alkali-treated highland bamboo fiber at various concentrations [25–30].

Wavenumber (cm^−1)	Functional group	Compounds
3400–3425	–OH	Alcohol (cellulose, hemi-cellulose, and lignin), phenol (bond H), and carboxylic acid
22,075–2083	C–H	Alkanes
1617–1620	C=O	Hemicelluloses and lignin
1380–1382	C–H	C–H deformation in cellulose and hemicellulose
1106–1109	C–O	Alcohol (cellulose, hemicellulose, and lignin), ether, carboxylic acid, and ester
613–619	O–H	Out of plane bending