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. 2020 Jul 27;12(8):1671. doi: 10.3390/polym12081671

Figure 2.

Figure 2

ATR-FTIR spectra of (A) gelatin, zein, and keratin nanofibers and (B) PCL/keratin, PCL/zein, and PCL/gelatin. Spectrum of net PCL nanofibers was reported as negative control.