Synthesis and Characteristics of a Semi-Interpenetrating Polymer Network Based on Chitosan/Polyaniline Under Different pH Conditions

The chitosan/polyaniline (PANi) semi-interpenetrating network polymers (semi-IPN)s were prepared under different pH conditions. Changes of structural properties were investigated using Fourier transform infrared (FT-IR) spectroscopy, Solid-state 13C NMR and wide angle X-ray diffraction (WAXD). The spectroscopic studies revealed that the PANi had converted to its pH-switched, emeraldine salt (ES) form when prepared from solutions of pH