组成对分子筛-导电聚苯胺共混物介电弛豫的影响
Effect of composition on the dielectric relaxation of zeolite-conducting polyaniline blends
摘要：
在0.01 ~ 2000000 Hz的频率范围内测量了导电聚苯胺和沸石-聚苯胺共混物从室温到液氮温度的复介电常数。检测到25、35和50重量%沸石共混物的损失峰。其在频域中的位置、激活能和强度是组成的函数。实验结果解释通过竞争的多个作用的沸石：作为比聚苯胺导电少，它阻碍了电荷流通过划分大导电聚苯胺区域成较小的块，随后提供短程通路，而且，丰富的共混物在界面分离沸石聚苯胺。
英文摘要：
The complex permittivity of conducting polyaniline and zeolite - polyaniline blends was measured in the frequency range 0.01 to 2000000 Hz from room temperature to liquid nitrogen temperature. A loss peak is detected for 25, 35 and 50 wt % zeolite blends. Its position in the frequency domain, activation energy and intensity is a function of composition. The experimental results are interpreted through the competing multiple role of zeolite: as being less conducting than polyaniline, it impedes the electric charge flow by dividing large conducting polyaniline regions into smaller pieces, subsequently provides short-range pathways and, moreover, enriches the blend in interfaces separating zeolite from polyaniline.
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