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Template Synthesis of Iminodiacetic Acid Polysiloxane Immobilized Ligand Systems and their Metal Uptake Capacity

Abstract : Porous solid polysiloxane ligand systems bearing an iminodiacetic acid chelating ligand of the general formula P-IDA (where P-represents [Si-O] n polysiloxane network and IDA represent an organofunctional group) were achieved in a two-step reaction. The first step includes a template synthesis of 3-iodopropylpolysiloxane (P-I) or 3-aminopropyl-polysiloxane (P-MA) by hydrolytic polycondensation of TEOS and the corresponding silane agent in the presence of CTAB as a surfactant. The second step includes a modification of 3-iodopropylpolysiloxane with diethyliminodiac-etate or 3-aminopropylpolysiloxane with ethylchloroacetate to produce IDA-functionalized polysiloxane ligand systems P-IDA-I & P-IDA-II respectively. It was found that the modified IDA-functionalized polysiloxane ligand systems exhibited higher capacities for uptake of the metal ions (Ni 2+ , Cu 2+ and Pb 2+) than those prepared without surfactants.
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https://hal.sorbonne-universite.fr/hal-02162451
Contributor : Guillaume Laurent <>
Submitted on : Friday, June 21, 2019 - 6:02:32 PM
Last modification on : Friday, June 19, 2020 - 10:36:02 AM

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Nizam El-Ashgar, Mohammad Silmi, Issa El-Nahhal, Mohamed Chehimi, Florence Babonneau. Template Synthesis of Iminodiacetic Acid Polysiloxane Immobilized Ligand Systems and their Metal Uptake Capacity. Silicon, Springer, 2017, 9 (4), pp.563-575. ⟨10.1007/s12633-015-9303-x⟩. ⟨hal-02162451⟩

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