The inner surface OH peaks at 3620 cm -1 and 3697 cm -1 persisted in the spectrum of the M MMT. The shift in the OH absorption band from (3441 cm -1 to 3443 cm -1 , 1627 cm -1 to 1626 cm -1 , and the absence of the 3410 cm -1 band suggested that modification was achieved on this site. Protons attack the -OH groups in the clay layers during acid activation of M MMT, creating changes in the adsorption bands ascribed to the OH vibration and octahedral cations. In CS-MNP, the band at 2,875 cm -1 was attributed to the symmetrical stretching of the -CH2 group in the polymer, 1,660 cm -1 to the amide I group (C-O stretching along the N-H deformation), 1,557 cm -1 to the -NH deformation, 1,412 cm -1 to the C-N axial deformation (amine group), 1,374 cm -1 to the COO-group in carboxylic acid salt, and 1,157 cm -1 to peak of β (1-4) glucosidic bond.