Complexation of crosslinked polyacrylamide-supported aminoligands with Cu(II): Effect of crosslinking on complexation kinetics

Abstract

Kinetics of Cu(II) complexation of amino ligands supported on polyacrylamides with crosslinking agents which differ in their polarity and flexibility have been studied. The complexation is first order with respect to the metal ion. The rate of Cu(II) intake increases with the hydrophilic and flexible nature of the crosslinks. The Langmuir and Frumkin equations are used to evaluate the adsorption parameters of complexation which suggest that the phenomenon of adsorption depends on the nature of the crosslinking agent in the polymer matrix. The interaction between the complexed metal ions is more in the polymer support with rigid crosslinking.