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发明授权
CN104884510B 离子交换膜及其制造方法、以及电渗析装置 失效 - 权利终止

离子交换膜及其制造方法、以及电渗析装置
摘要：
本发明提供一种离子交换膜，其含有具有阳离子交换基团或阴离子交换基团的离子性乙烯醇类聚合物。所述离子交换膜(1)是由多孔性支撑体(3)与离子性乙烯醇类聚合物构成的离子交换膜。所述多孔性支撑体在从其一个面起朝向厚度方向上具备浸渗层(2)，所述浸渗层(2)的至少一部分浸渗有所述离子性乙烯醇类聚合物。所述离子性乙烯醇类聚合物是具有选自阳离子交换基团或阴离子交换基团中的离子交换基团的离子性乙烯醇类聚合物。离子交换膜的一个面的ζ电位ζ1与另一面的ζ电位ζ2的值由式(1)表示。(|ζ1|－|ζ2|)/|ζ1|＜0.5 (|ζ1|≥|ζ2|) (1)。
摘要（英）：

Provided is an ion exchange membrane including an ionic vinyl alcohol polymer having a cation exchange group or an anion exchange group. The ion exchange membrane 1 includes a porous support 3 and the ionic vinyl alcohol polymer. The porous support is provided, in a thickness direction from one surface thereof, with an impregnated layer 2 at least a part of which is impregnated with the ionic vinyl alcohol polymer. The ionic vinyl alcohol polymer includes an ionic vinyl alcohol polymer having an ion exchange group selected from a cation exchange group or an anion exchange group. The ion exchange membrane has a zeta potential value (¶1) at one surface and a zeta potential value (¶2) at the other surface, which are represented by the formula (1). ¶ �¢ 1 - ¶ �¢ 2 / ¶ �¢ 1 < 0.5 ¶ �¢ 1 ‰¥ ¶ �¢ 2

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