Effect of external electric fields on the ionic conductivity of the PET ion-track membrane

IF 2.6 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physica Scripta Pub Date : 2024-09-11 DOI:10.1088/1402-4896/ad74a9

Giovanni Ceccio, Jiri Vacik, Dietmar Fink, Jakub Siegel and Antonino Cannavò

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引用次数: 0

Abstract

Polymeric ion track-etched membranes with asymmetric pores have been the subject of increased interest in both the academia and industry in recent decades. This interest is related to the rectification behavior of the membranes and their possible applications. In this work, the polyethylene terephthalate (PET) membranes with conical ion tracks were investigated for different etching conditions. Thin PET membranes were prepared using irradiated foils etched in a NaOH bath with the help of external electric fields (AC/DC) of a specific polarity. After etching, the I-V characteristics of the membranes were examined in the KCl solutions with different molarities. The obtained results showed that the I-V relations are strongly non-linear, thus confirming the rectification behavior of the membranes. It turned out that the external AC and DC fields applied during etching play an important role. They make it possible to influence the pore etching process, and so the properties of the membranes, which is important for the intended applications. Keywords: polymeric membranes, asymmetric pores, polyethylene terephthalate, I-V characteristics, transport phenomena

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外部电场对 PET 离子轨道膜离子传导性的影响

近几十年来，学术界和工业界对具有不对称孔隙的聚合物离子轨道蚀刻膜的兴趣与日俱增。这种兴趣与膜的整流行为及其可能的应用有关。在这项工作中，研究了在不同蚀刻条件下具有锥形离子轨道的聚对苯二甲酸乙二酯（PET）膜。在特定极性的外部电场（交流/直流）的帮助下，使用在 NaOH 槽中蚀刻的辐照箔制备了 PET 薄膜。蚀刻后，在不同摩尔浓度的 KCl 溶液中检测了薄膜的 I-V 特性。结果表明，I-V 关系具有很强的非线性，从而证实了膜的整流行为。蚀刻过程中施加的外部交流和直流电场发挥了重要作用。它们可以影响孔蚀刻过程，从而影响膜的特性，这对预期应用非常重要。关键词：聚合膜、不对称孔隙、聚对苯二甲酸乙二酯、I-V 特性、传输现象

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来源期刊

Physica Scripta 物理-物理：综合

CiteScore

3.70

自引率

3.40%

发文量

782

审稿时长

4.5 months

期刊介绍： Physica Scripta is an international journal for original research in any branch of experimental and theoretical physics. Articles will be considered in any of the following topics, and interdisciplinary topics involving physics are also welcomed: -Atomic, molecular and optical physics- Plasma physics- Condensed matter physics- Mathematical physics- Astrophysics- High energy physics- Nuclear physics- Nonlinear physics. The journal aims to increase the visibility and accessibility of research to the wider physical sciences community. Articles on topics of broad interest are encouraged and submissions in more specialist fields should endeavour to include reference to the wider context of their research in the introduction.