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首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >Synthesis of microcapsules containing different extractant agents
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Synthesis of microcapsules containing different extractant agents

机译：包含不同萃取剂的微胶囊的合成

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Mercury is one of the most toxic pollutants, with high capacity of accumulation in living organism, causing important human health problems. Therefore, the mercury removal from water is an important research goal. In a previous work, an extractant agent [di(2-ethylhexyl) phosphoric acid] was microencapsulated in poly(styrene-co-divinylbenzene) by means of suspension polymerisation using toluene as diluent. In this study, this recipe has been modified changing the toluene by heptane and extended to four additional extractants (trioctylamine, trioctylmethylammonium chloride [TOMAC], tributyl phosphate and trioctylphosphine oxide). The polluting potential of the waste liquid from the process was measured by total organic carbon and chemical oxygen demand analyses. The morphology, particle size and distribution were studied by scanning electron microscopy and low angle laser light scattering. The amount of extractant agent into the microcapsules and the microencapsulation efficiency were determined by thermogravimetric analysis and the mercury removal capacity by equilibrium studies. Microcapsules containing TOMAC demonstrated to be the best material for the mercury removal and retention.
机译：汞是最剧毒的污染物之一，在生物体内具有很高的积累能力，会引起重要的人类健康问题。因此，从水中去除汞是重要的研究目标。在先前的工作中，通过使用甲苯作为稀释剂的悬浮聚合，将萃取剂[二（2-乙基己基）磷酸]微囊化在聚（苯乙烯-共二乙烯基苯）中。在这项研究中，对这种配方进行了修改，改变了庚烷对甲苯的影响，并将其扩展至四种其他萃取剂（三辛基胺，三辛基甲基氯化铵[TOMAC]，磷酸三丁酯和三辛基氧化膦）。通过总有机碳和化学需氧量分析来测量该过程中废液的污染潜力。通过扫描电子显微镜和低角度激光散射研究了形貌，粒度和分布。通过热重分析确定萃取剂进入微囊的量和微囊化效率，并通过平衡研究确定除汞能力。含有TOMAC的微胶囊被证明是去除和保留汞的最佳材料。

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