Investigation of Chitosan Grafting and Uptake Properties of Some Metal Ions by Atomic Absorption Spectrophotometry

Abstract

In the research described here, to graft chitosan with the atom transfer radical polymerization (ATRP) method, chitosan acetyl chloride was obtained as a macro-initiator by reacting chitosan with chloracetyl chloride. This macro-initiator was then grafted with monomer [acrylamide (AM) or methacrylamide (MAM), or diacetone acrylamide (DAAM)] in the presence of 2,2'-bipyridine/CuCl as a catalyst system. Structure characterization of all synthesized products was performed with the help of elemental analysis and IR techniques. Additionally, the metal ions (Cu2+, Co2+, Ni2+, and Cd2+) uptake properties of the polymers were determined by atomic absorption spectrophotometry. Metal ion uptake parameters were calculated using various formulas and the results were compared.