Polyaniline (Pani) and Polyaniline-silver nanocomposites (Pani-Ag) were prepared by employing interfacial polymerization using ammonium persulphate as an oxidizing agent. During the polymerization, the Ag þ is reduced to Ag 0 , and the formations of regular nanocomposite materials were studied by Fourier transform infrared spectroscopy and UV-visible spectroscopy techniques. Scanning electron microscopy and transmission electron microscopy images were conducted to characterize the morphology. Thermogravimetric and differential thermal analysis were carried out to study the thermal stability of the resulting composites. Formation of conducting emeraldine salt form was concluded by electrical conductivity.
The synthesis of ultrafine MoO 3 through a self-propagating combustion route employing polyethylene glycol as fuel is reported. The precursor molybdenum oxalate is employed in this study for the conversion of the precursor to ultrafine MoO 3 particles. The solvent casting method is adopted for the synthesis of MoO 3 dispersed polyvinyl alcohol nanostructured film (MoO 3-PVA). These synthesized MoO 3 and their composite samples are characterized for their structure, morphology, bonding and thermal behaviour by XRD, SEM, IR and DSC techniques, respectively. The distribution of MoO 3 in polyvinyl alcohol gives a crystalline polymer, a compact structure and an increase in glass transition temperature.
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