Synthesis of Some New Polysiloxane Ligand Systems (Glycinate)-Part II

摘要

Polysiloxane-immobilized glycinate chelating ligand system of the general formula P-(CH_2)_3NHCH_2CO_2H (where P represents the polysiloxane network) have been prepared by two methods. The first method used is through the reaction between 3-amino-propyltriethoxysilane and chloroethylacetate, ClCH_2COOEt,followed by hydrolytic polycondensation with tetraethoxysilane (befor polymerization). The second method,which was used,is throgh the reaction of 3-aminopropylpolysiloxane and haloethylacetate XCH_2COOEt, X=Cl or I(after polymerization). The elemental analysis indicates that more glycinate ligand groups were obtained by functionalization before polymerization than after polymerization process. The glycinate olysiloxane ligands show high potential for copper ion uptake.