“…As shown in Figure 2a, the FTIR spectra of PVA nanofibers and ceftriaxone-loaded PVA nanofibers showed major peaks at 3310, 2935, 1720, and 1084 cm −1 , which corresponded to OH stretching, C-H stretch vibrations, C=O carbonyl stretching, and C-O-H stretching, respectively, in the PVA polymer [30]. After loading the ceftriaxone drug, a new peak was observed at 1603 cm −1 , which corresponded to C=C stretching in the ceftriaxone drug [26,27,31]. The FTIR spectra of CA nanofibers (shown in Figure 2b) showed absorption peaks at 1736, 1372, and 1224 cm −1 , indicating the presence of C=O, C-CH 3 , and C-O-C groups, respectively [32].…”