Two other peaks at 1061 and 897 cm1 were associated with the C–O stretching and C–H rocking vibrations of cellulose, which appeared in all of the spectra
The FT-IR spectrum of CNC was similar to that of CMF in all wave numbers, which indicated that
the main cellulose structure has been maintained after acid hydrolysis. In the case of CNC, the peak intensity was higher than that of CMF, which indicated that the degree of crystallinity of the cellulose of CNC was higher than that of CMF