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Development of Novel Metal Ion Selective Ion-exchange Resin Based on Surface Template Polymerization

基于表面模板聚合的新型金属离子选择性离子交换树脂的研制

基本信息

批准号：
06555256
负责人：
TAKAGI Makoto
金额：
$ 3.65万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555256/
关键词：
surface imprinting latex ion-exchange resin molecular recognition metal ion molecular imprinting

项目摘要

It becomes an important research area to develop highly selective metal-chelating resin in regard to reusing metal sources. It is necessary to establish the methodology for producing materials (host or artificial receptor) that have specific ability for ion recognition. Surface imprinting is an approach to introduce special molecular recognition sites on the oil-water interface during the synthesis of ion-exchange resins.We synthesized Cu (II)-and Zn (II)-imprinted resins because these are typical metal ions which have different coordination mode. We chose oleic histamine amide as a functional monomer and divinylbenzene as a cross-linker. The imprinted resins have higher activities for absorption of metal ions but have less selectivity. For improvement of the metal ion selectivity, we stabilized the o/w emulsion during the polymerization by adding co-surfactants. In the case of adding nonion surfactant, the selectivity for Cu (II) was remarkably improved. We also prepared Cd (II)-imprinted resins that have high selectivity for Cd (II). We synthesized imprinted resins for lanthanide ions such as Eu (III) and La (III) by using surfactants containing phosphoric ester groups. In the case of using DOLPA as a functional monomer, Eu (III)-imprinted resin showed high selectivity for Eu (III).It is demonstrated the possibilty of applying the surface imprinted resins as novel materials for separating metal ions. Surface imprinting that we have been newly developed is a useful method for ion-exchange resins, because it is possible to improve the metal ion selectivities by various combination of designed functional surfactant and co-surfactant.

开发高选择性金属螯合树脂成为金属源再利用的重要研究领域。有必要建立生产具有特定离子识别能力的材料（宿主或人工受体）的方法。表面印迹是在离子交换树脂合成过程中在油水界面上引入特殊分子识别位点的一种方法。我们合成了Cu(II)-和Zn(II)-印迹树脂，因为它们是典型的金属离子，具有不同的配位模式。我们选择油酸组胺酰胺作为功能单体，二乙烯基苯作为交联剂。印迹树脂对金属离子的吸附活性较高，但选择性较低。为了提高金属离子选择性，我们通过添加助表面活性剂来稳定聚合过程中的水包油乳液。添加非离子表面活性剂时，Cu(II)的选择性显着提高。我们还制备了对 Cd(II) 具有高选择性的 Cd(II) 印迹树脂。我们通过使用含有磷酸酯基团的表面活性剂合成了Eu（III）和La（III）等镧系离子印迹树脂。在使用DOLPA作为功能单体的情况下，Eu(III)印迹树脂对Eu(III)表现出较高的选择性。这证明了表面印迹树脂作为分离金属离子的新型材料的可能性。我们新开发的表面印迹对于离子交换树脂来说是一种有用的方法，因为可以通过设计的功能性表面活性剂和助表面活性剂的各种组合来提高金属离子的选择性。