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首页> 外文期刊>Journal of Applied Polymer Science >STABILIZATION OF SUPPORTED LIQUID MEMBRANES BY GELATION WITH PVC
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STABILIZATION OF SUPPORTED LIQUID MEMBRANES BY GELATION WITH PVC

机译：通过PVC胶凝来稳定支撑的液体膜

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This article describes the gelation by PVC of supported liquid membranes (SLMs) for nitrate removal using a quaternary ammonium salt as carrier. Untreated SLMs with this carrier are very unstable. To improve their stability, the LM-phase was gelled with polyvinyl chloride as gel-forming polymer. Both homogeneous gelations of the LM-phase as well as the application of an interfacial gel layer are described. In all cases, no improvement of the stability could be observed. For both types of gelation, the initial nitrate flux decreased while the flux after 1 day of degradation was almost zero. The flux decrease is the result of a decrease of the the diffusion rate of carrier complex as a result of the presence of the gel network and the thickness of the applied gel layer. The absence of any stability improvement might indicate that the loss of LM-phase from these membranes is due to dissolution of carrier or membrane solvent and not a result of emulsion formation only. (C) 1997 John Wiley & Sons, Inc. [References: 31]
机译：本文介绍了使用季铵盐作为载体的PVC支撑液膜（SLM）的凝胶化，以去除硝酸盐。未经处理的带有此载体的SLM非常不稳定。为了提高其稳定性，LM相用聚氯乙烯作为凝胶形成聚合物凝胶化。描述了LM相的均相凝胶化以及界面凝胶层的应用。在所有情况下，均未观察到稳定性的改善。对于两种类型的胶凝，降解后1天的初始硝酸盐通量均降低，而降解后的通量几乎为零。通量降低是由于存在凝胶网络和所施加的凝胶层的厚度而导致的载体复合物的扩散速率降低的结果。缺乏任何稳定性改进可能表明这些膜的LM相损失是由于载体或膜溶剂的溶解，而不仅仅是乳液形成的结果。 （C）1997 John Wiley＆Sons，Inc. [参考：31]

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