聚[3,5-(1-丙基-2,4-二羟基苯基)丁烯]离子交换性能及配位行为

Reactive Polymers Pub Date : 1995-05-01 DOI:10.1016/0923-1137(95)00003-2

J.R. Patel, D.H. Sutaria, M.N. Patel

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引用次数: 13

摘要

在多磷酸催化下，由2,4-二羟基丙烯酮与1,4-丁烷二醇缩聚制备的树脂(RPPBD)是一种选择性离子交换树脂，对某些金属离子具有配位倾向。通过元素分析、红外光谱、粘度研究对树脂进行了表征，用非水滴定法测定了树脂的平均分子质量(Mn)为2475 g/mol。采用批平衡法研究了该树脂的螯合离子交换性能。它被用来研究金属离子在较宽的ph范围和不同离子强度的介质中吸收的选择性。金属吸收的总速率顺序为:UO22+ >价比;Cu2 +比;Ni2 +

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Ion-exchanging properties and coordinating behaviour of poly[3,5-(1-propio-2,4-dihydroxy phenylene)butylene]

Resin (RPPBD) prepared by Friedel-Craft's polycondensation of 2,4-dihydroxypropiophenone with 1,4-butane diol in the presence of polyphosphoric acid catalyst proved to be a selective ion-exchange resin and indicates coordination tendency for some metal ions. The resin was characterized by elemental analysis, IR spectra, viscosity study and its number average molecular mass ( $M_{n}$ ) was determined by non-aqueous titration and found to be 2475 g/mol. Chelation ion-exchange properties of this resin have also been studied employing batch equilibration method. It was employed to study selectivity of metal ion uptake over a wide ph range and in media of various ionic strength. The overall rate of metal uptake follows the order: UO₂²⁺ > Fe²⁺ > Cu²⁺ > Ni²⁺

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Reactive Polymers

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