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. 2021 Mar 25;22(7):3346. doi: 10.3390/ijms22073346

Figure 4.

Figure 4

Figure 4

Figure 4

FT-IR spectra ( ) of BC, oxBC, and their composites with Col: BC/Col/TGWM120 and BC/Col/TGGS120–BC/Col cross-linked for 120 min with TGWM and TGGS, respectively. Differential spectrum ( ) of (A) BC/Col from which the spectrum of BC was subtracted; (B) BC/Col/TGWM120 from which the spectrum of BC/Col was subtracted; (C) BC/Col/TGGS120 from which the spectrum of BC/Col was subtracted; (D) oxBC from which the spectrum of BC was subtracted; (E) oxBC/Col from which the spectrum of oxBC was subtracted.