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The use of polymers as sequestering agents for toxic metal ions

机译:聚合物作为螯合剂用于有毒金属离子的用途

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Polymer-metal complexes were formed by nonsolvent precipitation technique for the metals Co, Pb, Ni, Cr, and Fe, and polystyrene (Pst), Poly(vinyl chloride) (PVC), and Nylon 66. By means of Fourier transform Infrared studies, it was established that chemical bonds actually do exist between the metal ions and the polymers (i.e., that the metal ions are not simply adsorbed on the surface of the polymers), It was observed also that the degrees of metal-polymer interaction vary from polymer, from metal ion to metal ion, and depend on the metal ion concentration. These observations are explained in terms of the atomic radii and charges on the transition metal ions. The number and type of interaction sites/ligands on the substrates are also considered relevant. (C) 2002 Wiley Periodicals, Inc. [References: 7]
机译:通过非溶剂沉淀技术形成金属Co,Pb,Ni,Cr和Fe以及聚苯乙烯(Pst),聚氯乙烯(PVC)和尼龙66的聚合物-金属配合物。通过傅立叶变换红外研究,已经确定在金属离子和聚合物之间确实存在化学键(即,金属离子不简单地吸附在聚合物表面上),并且还观察到金属-聚合物相互作用的程度从聚合物,从金属离子到金属离子,并取决于金属离子浓度。这些观察结果是根据原子半径和过渡金属离子上的电荷来解释的。底物上相互作用位点/配体的数量和类型也被认为是相关的。 (C)2002 Wiley Periodicals,Inc. [参考:7]

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