Poly(imide‐siloxane) films with controlled thickness,Journal of Applied Polymer Science

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Poly(imide‐siloxane) films with controlled thickness
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-09-15 , DOI: 10.1002/app.49893
Kristýna Janegová ₁ , Petr Sysel ₂ , Hana Kulhánková ₂ , Viacheslav A. Perfilov ₃ , Milan Bernauer ₃ , Vlastimil Fíla ₃

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Polyimides containing siloxane moieties are used in some advanced applications. For example, these polymers can be employed as separation membranes in the form of self‐standing, thin films. These products are formed by components of different polarities that have the tendency, at least partly, to separate in the final materials, with an impact on their final, bulk, and/or surface properties. The aim of this work is to study the dependence of the composition of the polyimide, poly(imide‐siloxane) (PIS) and copolymeric PIS self‐standing films differing in thickness on their properties. The important finding is that there is a rather large difference observed in the water contact angle on the film side oriented toward the air atmosphere during film preparation and that oriented toward a hydrophobic Teflon surface. Nevertheless, the gas transport properties of carbon dioxide and methane for these membranes are more influenced by the membrane composition than by the surface properties.

中文翻译：

厚度受控的聚（酰亚胺-硅氧烷）薄膜

在某些高级应用中使用了含有硅氧烷部分的聚酰亚胺。例如，这些聚合物可以以自立的薄膜形式用作分离膜。这些产品由具有不同极性的组分形成，这些组分具有至少部分在最终材料中分离的趋势，并对其最终，整体和/或表面性能产生影响。这项工作的目的是研究厚度不同的聚酰亚胺，聚（酰亚胺-硅氧烷）（PIS）和共聚PIS自立式薄膜的成分对其性能的依赖性。重要的发现是，在薄膜制备过程中朝向空气气氛的薄膜侧的水接触角与朝向疏水性特氟隆表面的薄膜侧的水接触角存在相当大的差异。不过，

更新日期：2020-11-17

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