Abstract
AbstractThe resistance‐based switching humidity property of crosslinked acrylic acid–acrylamide copolymers was measured with an LCZ meter, and their ionic mobilities, which varied with humidity, were measured by the polar‐inversion method. Their conduction mechanism was discussed, and it was found that the ionization effect of some binding ions against a critical humidity takes place in switchable humidity‐sensitive materials. The effect is that some binding ions in materials turn into free ions when a given ambient humidity, called a critical humidity, is reached. The avalanching‐conduct electricity then occurs in materials. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 1057– 1060, 2002
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