Synthesis and Characterization of Polymer Metal Complexes of Cu (II) and Zn (II) with NNMBA Cross-Linked Polyacrylamide Supported L-Aspartic Acid and L-Lysine

Abstract

Crosslinked polymers with specific properties are widely used as catalyst supports as they are inert, non toxic and non volatile and offer advantageous features of heterogeneous catalysis such as thermal stability, selectivity and recyclability to homogeneous system. The ease of separation from the reaction products lead to operational flexibility. Moreover the amount of metal present on the surface of such catalyst is very small which is of economic significance in the case of expensive metals. Metal ion binding properties of transition metal ions Cu (II) and Zn (II) with amino acids L-Aspartic acid (L-Asp) and L-Lysine (L-Lys) supported 2 mol % N,N’ methylene bisacrylamide (NNMBA) crosslinked polyacrylamide have been studied. The swelling studies reveal that they are highly hydrophilic polymeric ligands. The characterization of the polymer, transamidated polymer, and the polymer metal complexes were done by Infra Red (IR), Ultra Violet (UV) and Scanning Electron Microscope (SEM) analysis. From carboxyl capacity measurements, SEM analysis and swelling studies it was established that the more complexation of the metal ion is found with the ligand L-Aspartic acid