Influence of annealing effects on polyaniline for good microstructural modification

AbstractH2SO4 doped polyaniline (PANI) has synthesized by chemical oxidation method. The prepared Polyaniline were annealed at 150°C, 200°C and 250°C for 30min in vacuum. Crystal size, percentage of crystallinity, total percentage of crystallinity properties of untreated and heat treated PANI samples were studied by using X-ray diffraction pattern. The molecular structure of untreated and heat treated samples were examined by using Fourier transform infrared spectrophotometer. UV study shows π–π* transition of untreated and heat treated of polyaniline were found at 328 and 636nm. The peak at 636nm reveals the extension of conjugated polymer. Thermal properties of untreated and heat treated PANI sample measured by using thermo gravimetric analysis and differential scanning calorimetric spectroscopy