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首页> 外文期刊>Journal of Applied Polymer Science >Metal Ion Imprinted Microsphere Prepared by Surface Molecular Imprinting Technique Using Water-in-Oil-in-Water Emulsions
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Metal Ion Imprinted Microsphere Prepared by Surface Molecular Imprinting Technique Using Water-in-Oil-in-Water Emulsions

机译：水包油包水乳液表面分子印迹技术制备的金属离子印迹微球

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摘要

A novel metal ion imprinted polymer was prepared by the surface molecular imprinting technique. Trimethylolpropane trimethacrylate (TRIM), zinc ions, and 1,12-dodecanediol-O,O'-diphenyl phosphonic aicd (DDDPA) were used as the matrix-forming monomer, imprint molecule, and functional monomer, respectively. We have prepared Zn(II)-imprinted microspheres utilizing water-in-oil-water emulsions, which are spherically well defined and uniform. TRIM comprises of three polymerizable groups that serve to align the recognition sites produced on the polymer surface with better template effect. We conducted diagnostic zinc adsorption tests by using the Zn(II)-imprinted and unimprinted polymers in order to make an assessment on the effectiveness of TRIM-based and divinylbenzene-based imprinted polymers. The template effect of the TRIM-based polymer was enhanced by the high rigidity of the polymer matrix compared to that of the imprinted polymer whose matrix is divinyl-benzene. In addition, the adsorption equilibrium constnat was evaluated on the basis of the Langmuir analysis for the adsorption data. The method to prepare metal-imprinted microspheres on the surface of polymers crosslinked by TRIM is easy, and the adsorbent produced can be readily used without subsequent grinding or sieving.
机译：通过表面分子印迹技术制备了一种新型的金属离子印迹聚合物。三羟甲基丙烷三甲基丙烯酸酯（TRIM），锌离子和1,12-十二烷二醇-O，O'-二苯基膦酸（DDDPA）分别用作形成基质的单体，压印分子和功能单体。我们使用油包水乳状液制备了Zn（II）印迹的微球，该乳状液的球形定义明确且均匀。 TRIM由三个可聚合基团组成，这些基团用于使聚合物表面上产生的识别位点与模板效果更好地对齐。我们通过使用Zn（II）印迹和未印迹聚合物进行了诊断性锌吸附测试，以评估基于TRIM和二乙烯基苯的印迹聚合物的有效性。与基质为二乙烯基苯的压印聚合物相比，TRIM基聚合物的模板效果由于聚合物基质的高刚性而得到增强。另外，基于朗缪尔分析对吸附数据评估吸附平衡常数。在通过TRIM交联的聚合物表面上制备金属压印的微球的方法很容易，并且所产生的吸附剂可以容易地使用，而无需随后的研磨或筛分。

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