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(a) 1H NMR spectra of gel polyaniline-grafted chitosan (CSP) and chitosan (CS) prepared in D2O at room temperature. (b) FTIR spectra for CSP and CS. (c) Digital photographs of the chitosan/polyaniline/laponite (COL) hydrogel formation process. I: CSP solution. II: Oxidized dextran/laponite (OD/LAP) solution. III: COL hydrogel.
