فهرست نشریات علمی دسترسی آزاد ایران

Composites of polyaniline with calcium carbonate particles (PANI/CaCO 3 ) with different CaCO 3 content (0-40 %w/w) were prepared. Two different methods of in situ polymerization and solution mixing were used for PANI/CaCO 3 composite preparation. The composite was characterized using FT-IR, SEM, electrical conductivity measurement and cyclic voltammetry techniques. The incorporation of CaCO 3 particles in polyaniline matrix in both methods of composite preparation was confirmed by FTIR results. Electrical conductivity measurements showed that the conductivity of the composite decreases by increasing the CaCO 3 loading in polyaniline. Also, the anticorrosive property of the PANI/CaCO 3 composite coating on iron samples was investigated in various corrosive environments. According to the results, the corrosion rate or corrosion current of PANI/CaCO 3 composite coated iron coupons was much lower (96.75%) than polyaniline coated samples. Also, results showed that the corrosion current of composite coated samples varies with the variation of the CaCO 3 content in composite coating, and the optimum CaCO 3 content of composite coating to achieve the best anticorrosive performance on iron is 10 %w/w.