Figure 2. FTIR Spectra of chitosan exhibiting absorbance of -OH and –NH groups at 3468 cm−1 A., synthesized cholesterol-chitosan (CH-CS) polymer at 1652 cm−1 (C=O stretch overlapped with N-H bend; B., and folate-cholesterol-chitosan (FACC) polymer at 1709 cm-1 (benzene ring; red line: FACC; blue line: CS; C., respectively.
