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. 2021 Jul 3;13(13):2208. doi: 10.3390/polym13132208

Figure 2.

Figure 2

Figure 2

FT-IR spectra of mannose-modified CS. The IR spectrum of the sample powder was analyzed using the potassium bromide pellet method in an IR spectrophotometer. The data were determined between 4000 and 400 cm−1. The IR characteristics of mannose (MAN) (A), CS (B), and MAN-modified CS (C) are illustrated.