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FTIR spectra of (A) CG (2% chitosan, 2% gelatin, 0.5% PEG, 0.075% AgNPs) (B) CG1 (2% chitosan, 2% gelatin, 0.5% PEG, 0.0075% AgNPs) (C) CG2 (2% chitosan, 2% gelatin, 0.5% PEG, 0.0125% AgNPs) (D) CG3 (2% chitosan, 2% gelatin, 0.5% PEG, 0.025% AgNPs) (E) CG4 (2% chitosan, 2% gelatin, 0.5% PEG, 0.05% AgNPs).
