“…67 The bands at 2931 and 2927 cm −1 of PC and CPC1 were assigned to the C-H stretching vibration of hemicellulose, respectively. 68 The bands at 1723 and 1716 cm −1 were assigned to the C]O of hemicellulose in PC and CPC1, respectively. 69 The bands at 1623, 1513, 1451 cm −1 in PC, and 1622, 1512, and 1450 cm −1 in CPC1 were due to C]C vibrations into the aromatic rings of the lignin biopolymer.…”