Study of Transition Metal Acetylacetonate Doped PVC Films

Pvc is one of the widely used polymers for various applications throughout the world. various additives are added to modify its properties according to the requirement of a particular product. doping of the polymer is known to affect its electrochemical properties. in the present work five transition metal acetylacetonate complexes, tris(acetylacetonato) chromium, tris(acetylacetonato) cobalt. bis(acetylacetonato) copper, bis(acetylacetonato) nickel and tris(acetylacetonato) iron, were prepared and crystallized. these metal complexes were analysed with ir spectroscopy, and their purity was checked with tlc. pvc was than dopes with 5% of these complexes, and casted into films, by slow heating. the film thickness was measured with micrometer. all the films were transparent and had different colours. the structural changes in doped pvc matrix were studied by ir spectrophotometer. our experimental investigations show significant changes in the matrix of the doped pvc films. the interpretation of the ir spectra in comparison to the undoped pvc film shows the formation of polyene and alcohol group sequences in doped polymer matix. formation of alcoholic group was not observed in the pvc film doped with that the bis(acetylacetonato) copper. no correlation could be observed between the structural changes in the doped pvc matrix and the periodic position of the metal ions.