螯合树脂研究 ⅩⅪ．互贯网络型巯基胺型树脂的合成及其性质

本工作制备了以大孔交联聚苯乙烯为第一网络，以由环硫氯丙烷与多乙烯多胶反应而形成的交联聚合物为第二网络的互贯型流基胺树脂，并测定了其孔结构．该互贯型树脂与相应的凝胶型树脂相比，在酸性介质中膨胀程度小得多，而对Ａｇ~＋、Ａｕ~＋３ｎ的吸附性能更好．对Ａｇ~＋、Ａｕ~３＋的吸附容量分别可达４３２ｍｇＡｇ~＋／ｇ和５５３ｍｇＡｕ~３＋／ｇ．对Ａｕ~３＋的吸附率大于９９％．

THE STUDIES ON CHELATING RESINS ⅩⅪ THE PREPARATION AND PROPERTIES OF IPN MERCAPTO-AMINE CHELATING RESINS

PN mercapto-amine chelating resins were prepared by the reaction of chloromethylthiirane adsortal in the macroporous crosslinked polystyrene(PSt) bead as the first network with polyethylene polyamines to form acrosslinked polymers as the second network. The pore structure of the IPN chelating resins were measured. The resins show much less expanding extent in acid media and better adsorption properties for Ag⁺ and Au³⁺ than the corresponding gel chelating resins . The adsorption capacities for Ag⁺ and Au³⁺ are as high as 432mg Ag⁺/g and 553mg Au³⁺/g,respectively. The adsorption efficiencies for Au³⁺ are more than 99%.