The transport phenomena across polymeric membrane may be enhanced by applying various strengths inside or outside the system. Recently, polymer inclusion membrane (PIM) has been considered one of the most popular methods that acts as a sink for the contaminant and immobilizes it. In the literature, there is no report about how to achieve the synthesis of multi-layer PIMs. In this paper, an improvement of a novel category of membrane without carrier for performing ion separation is reported. Different membranes were elaborated from binary mixtures of polymers, cellulose triacetate (CTA), polymethyl methacrylate (PMMA) and polyvinyl chloride (PVC) using 2-nitrophenyl octyle-ether (NPOE) as plasticizer and carrier in the same time, in order to increase specific interactions between the different polymers. The membranes (Polymer 1– NPOE – Polymer 2) were synthesized by phase inversion method modified by changing the procedure of a plasticizer/carrier addition and characterized by FTIR, TGA, SEM, zeta potential and contact angle. The CTA-based membranes exhibited well-defined pores partially filled with the second polymer and NPOE. Overall, our results showed that the addition of NPOE resulted in homogeneous membranes with modified physical properties, such as thickness, and hydrophobicity. A study of transport of Pb(II) using the synthesized membranes was studied. Dialysis experiments of lead ions across a polymeric membrane have shown that (CTA + NPOE + PMMA) and (PMMA + NPOE + PVC) membranes proved a good performance in one stage by fixing 12.15 and 25.31% of lead, respectively, without any additionally added carrier and acids. These results confirm the affinity between a basic polymer (poly-methyl methacrylate) and the metallic ion (Pb²⁺).

中文翻译：

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多层聚合物膜的制备和表征：聚合物化学性质的影响

可以通过在系统内部或外部施加各种强度来增强跨聚合物膜的传输现象。近来，聚合物包被膜（PIM）被认为是最流行的方法之一，可作为污染物的沉池并将其固定。在文献中，没有关于如何实现多层PIM的合成的报道。在本文中，报道了一种新型的无载体膜的改进，该膜用于进行离子分离。聚合物，三乙酸纤维素（CTA），聚甲基丙烯酸甲酯（PMMA）和聚氯乙烯（PVC）的二元混合物同时使用2-硝基苯基辛基醚（NPOE）作为增塑剂和载体，以制备不同的膜，以增加不同聚合物之间的特定相互作用。膜（聚合物1 – NPOE –聚合物2）是通过相转化法合成的，该方法通过改变增塑剂/载体的添加程序进行了修改，并通过FTIR，TGA，SEM，ζ电位和接触角进行了表征。基于CTA的膜显示出定义明确的孔，其中部分填充了第二种聚合物和NPOE。总体而言，我们的结果表明，添加NPOE会导致均质膜具有改善的物理性能，例如厚度和疏水性。研究了利用合成膜对Pb（II）的迁移的研究。跨聚合物膜的铅离子渗析实验表明，（CTA + NPOE + PMMA）和（PMMA + NPOE + PVC）膜在一个阶段中表现出良好的性能，分别固定了12.15％和25.31％的铅，而无需另外添加载体和酸。²⁺）。