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SEM images of electrospun CS/PVA/ox-CNO composite nanofibrous membranes. Formulations: (F1) (CS:PVA:ox-CNO 8:92:0); (F2) (CS:PVA:ox-CNO 8:91:1); (F3) (CS:PVA:ox-CNO 3.5:95.5:1); (F4) (CS:PVA:ox-CNO 5.4:92.6:2). For all the experiments, the voltage used was 20 kV, and its images at 5000×.
