Polyaniline Lab Report

Abstract. In this work investigation for the effect of compressed CO2 on the morphology of the produced Polyaniline (PANI) was carried out. The conventional oxidative polymerization using ammonium peroxydisulfate as oxidizing agent was used with and without compressed CO2. The results showed that different morphologies of PANI nanorods and PANI nanoparticles were produced using the conventional polymerization with and without compressed CO2 respectively. Molecular characterization of the produced materials using FTIR and XRD showed that the two prepared Polyaniline forms using the two different techniques are of the emeraldine salt state. It was indicated that PANI nanoparticles structure has an average diameter of 50nm, while PANI nanorods structure was found to have an average length of 4µm and average diameters of 95nm. The effect of the PANI morphological structure on the Acid blue 25 dye decolorization process was studied. The PANI nanorods recorded higher rate of dye decolorization of 99% within 8min compared with PANI nanoparticles that recorded the same percentage decolorization within 16min.

Keywords: Polyaniline, morphology, nanostructure, CO2 polymerization, wastewater treatment, dye removal. …show more content…
Aqueous solution of 0.25M APS was dissolved in 50 ml of freshly distilled water and kept for one hour at room temperature. Then the APS solution was added to the aniline solution in drop wise manner with slow rate (15 min) with simple discontinuous manual stirring. The solution was kept at for 24 h. The prepared polymer was collected and washed by 0.2M of HCl, Ethanol, and methanol then filtered by centrifugation for 15 min at 5000 r.p.m. The polymer was dried into an oven for 6 hrs at temperature of 60