Synthesis of silver/poly (diallyldimethylammonium chloride) hybride nanocomposite

This paper presents a method for the preparation of silver nano-particles in poly (diallyldimethylammonium chloride) (PDDA) using N,N-dimethylformamide (DMF) as a medium has been performed successfully. A golden solution in its UV–vis absorption spectrum showed surface plasmon resonance absorption bands between 410 and 425 nm in solutions and at about 461 nm in a transparent film. The Ag/PDDA nano-composite was characterized by X-ray diffraction (XRD) measurement, transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier-transform-infrared spectroscopy (FT-IR) and thermo-gravimetric analysis (TGA). XRD showed the fcc crystal structure of the bulk Ag with particles of <22 nm in size similar to that is observed by TEM and PDDA is crucial to the formation of such silver nano-composite. SEM indicated uniform distribution of particles in the film. TGA confirmed enhanced thermal stability of the polymer.