عنوان المقالة:New Strategy for the Synthesis of Diethylnetriaminetetraacetic Acid Functionalized Polysiloxane Ligand System
أ.د نظام محمود الأشقر | Prof. Nizam M. El-Ashgar | 13399
نوع النشر
مجلة علمية
المؤلفون بالعربي
Nizam M El-Ashgar, Issa M El-Nahhal, Mohamed M Chehimi, Florence Babonneau, Jacques Livage
الملخص العربي
A new rout was used for the synthesis of porous solid polysiloxane matrix of the general formula P-(CH2)3N(CH2COOEt)-(CH2)2N(CH2COOEt)-(CH2)2-N(CH2COOEt)2 (where P represents [Si-O]n) by the reaction of diethylenetriaminetrimethoxysilane with ethyl chloroacetate followed by polymerization with tetraethylorthosilicate via the sol gel process. The functionalized diethylenetriaminetetraacetic acid polysiloxane system (P-DETATA) was then obtained by acid hydrolysis of the diethylenetriaminetetraethylacetate functionalized polysiloxane(P-DETATAc). FTIR, 13C, 29Si CP-MAS NMR and XPS methods were used for characterization of their chemical structure. The new functionalized ligand system exhibits high capacity to coordinate with divalent metal ions (Co2+, Ni2+, and Cu2+) than its analogous ligand obtained by postmodification of triamine polysiloxane with ethyl chloroacetate.
تاريخ النشر
04/03/2009
الناشر
J. of Dispersion Science & Technology
رابط DOI
http://dx.
رابط خارجي
http://www.tandfonline.com/doi/abs/10.1080/01932690802599026
الكلمات المفتاحية
Chelating ligands, diethylenetriamine, immobilized-polysiloxane ligand systems, metal uptake, metal
رجوع