Characterization and Conductivity Studies of Nanocomposite Films with Polymer Networks Containing Polyaniline-Alginate/Titanium Dioxide

摘要

Polyaniline nanocomposite films were chemically synthesized in the presence of alginate template by varying the concentration of TiO2 in the composites. Characterization of the composite samples by FTIR, UV-Vis spectra (UV), and X-ray diffraction (XRD) indicates the formation of polyaniline-alginate/titanium dioxide (PAT) composites. The morphology analysis by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) also supports the formation of the composites. Temperature-dependent DC conductivity of the polyaniline-alginate (PA) and PAT composites was studied in the range of 300 ≤ T ≤ 500 K. UV-Vis and FTIR spectral studies reveal that the alginate is a good template for the chemical interaction between polyaniline and TiO2, which suggests that the micelles formed by the anilinium-alginate cations containing TiO2 are responsible for the transport properties of the PAT composites.