PREPARATION OF IMMOBILIZED-POLYSILOXANE IMINO(2-AMINOETHYLACETAMIDE) AND ITS APPLICATION

Abstract

porous solid polysiloxane ligand system of the general formula
P-(CH2)3-NH-CH2COONHCH2CH2NH2, (where P represents [Si-O]n siloxane
network) has been prepared by modification of the immobilized 3-
aminopropylpolysiloxane, P-(CH2)3NH2, with ethyl chloroacetate followed by
ethylenediamine. The new modified polysiloxane system exhibits good
potential for uptake of metal ions (Co2+, Cu2+, Zn2+ and Pb2+). This ligand
system gives more stable complexes with metal ions than its parent 3-
aminopropylpolysiloxane precursor. Thermogravimetric analyses of this
ligand system and its copper complex show high stability at relatively high
temperature.