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New chelating polymers for heavy metal ion sorption

机译:用于重金属离子吸附的新型螯合聚合物

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Twenty-six new chelating polymers containing pyridyl (Py) or bipyridyl (Bipy) units as ligating centers were synthesized by free-radical reactions of 2-vinylpyridine, 4-vinylpyridine, or 4-methyl-4 prime -vinyl-2,2 prime -bipyridine with different dimethacrylate crosslinkers and evaluated for heavy metal ion sorption from aqueous solutions. Both the Py- and Bipy-containing polymers are highly selective for Cu(II) over Co(II) and Ni(II) and for Hg(II) over Cd(II). The polymeric materials with Bipy binding sites generally exhibit more efficient metal ion sorption than do the corresponding Py-containing copolymers. The metal ion sorption capacity of the copolymer also depends on the structure of the dimethacrylate crosslinker.
机译:通过2-乙烯基吡啶,4-乙烯基吡啶或4-甲基-4伯-乙烯基-2,2伯的自由基反应,合成了二十六个新的含吡啶基(Py)或联吡啶基(Bipy)单元的螯合聚合物。 -联吡啶具有不同的二甲基丙烯酸酯交联剂,并评估了水溶液中重金属离子的吸附。含Py和Bipy的聚合物对Co(II)和Ni(II)的Cu(II)和Cd(II)的Hg(II)都具有高度选择性。具有Bipy结合位点的聚合物材料通常比相应的含Py共聚物表现出更有效的金属离子吸附能力。共聚物对金属离子的吸附能力还取决于二甲基丙烯酸酯交联剂的结构。

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