Electrochemical behaviour of acrylamide polymers functionalized with some schiff bases

Abstract

CV, SWV and CA have been used to investigate the electrochemical behaviour of 2-hydroxy-5-bromobenzaldehyde polyacrylamide (PABSB), 2-hydroxy-5-chlorobenzaldehyde polyacrylamide (PACSB) and 2-hydroxy-5-methylbenzaldehyde polyacrylamide (PAMSB) at the mercury electrode in aqueous media. The bromo- and chloro- derivatives were electroative while the halide-free compound, the methyl- derivative, was not. The analysis of the experimental data supports the formation of anion radicals as a result of C-X bond cleavage.  Following the electron transfer step, a protonation reaction was thought to be occuring through the E_irrC mechanism. The large polymeric molecules are adsorbed at the mercury electrode as expected contributing the adsorption current component to the diffusion one.

 

Keywords: Polymeric schiff base, electrochemistry of polyacrylamide, cyclic voltammetry, chronoamperometry.

 

Keywords

• Polymeric schiff base
• electrochemistry of polyacrylamide
• cyclic voltammetry
• chronoamperometry.

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