عنوان المقالة:Synthesis of new polysiloxane-immobilized ligand system di (amidomethyl) aminetetraacetic acid
أ.د نظام محمود الأشقر | Prof. Nizam M. El-Ashgar | 12317
Publication Type
Journal
Arabic Authors
Hayel M El-Kurd, Issa M El-Nahhal, Nizam M El-Ashgar
Abstract
A new chelating porous polysiloxane-immobilized tetraacetic acid ligand system has been prepared. This material was made by chemical modification of the iminodiacetic acid polysiloxane with thionyl chloride and diethyliminodiacetate, respectively. The polysiloxane functionalized with di(amidomethyl)aminetetraacetic acid of the general formula P-(CH 2 ) 3 N(CH 2 C(O)N) 2 (CH 2 COOH) 4 [where P represents the polysiloxane backbones (Si‒O‒Si) n ] was characterized by Thermogravimetric Analysis (TGA) and FTIR spectra. The FTIR results proved that tetraacetic acid groups are successfully grafted onto the polysiloxane surface. This ligand system exhibits high potential for extraction of divalent metal ions (Co+2, Ni+2, Cu+2, and Zn+2) from aqueous solution.
Publication Date
7/1/2005
Publisher
Phosphorus, Sulfur, and Silicon and the Related Elements
DOI
http://dx.
External Link
http://www.tandfonline.com/doi/abs/10.1080/104265090885084
Keywords
Diethyliminodiacetate ligand, iminodiacetic acid, metal uptake, polysiloxanes, polysiloxane-immobil
رجوع