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Fourier transform infrared spectroscopy (FTIR) spectra of pure CS powder, pure PVA nanofibrous membrane, Cip powder, CipHcl powder and drug-loaded nanofibrous membranes: (a) CS/PVA nanofibrous membrane, (b) CS/PVA/GO nanofibrous membrane, (c) CS/PVA/CipHcl nanofibrous membrane, (d) CS/PVA/GO/CipHcl nanofibrous membrane, (e) CS/PVA/Cip nanofibrous membrane, (f) CS/PVA/GO/Cip nanofibrous membrane.
