TOWARD REAL APPLICATIONS OF CONDUCTIVE POLYMERS
TOWARD REAL APPLICATIONS OF CONDUCTIVE POLYMERS
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DOI：
10.1016/0379-6779(94)03198-f
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发表时间：
1995-04-01
期刊：
影响因子：
4.4
通讯作者：
KIMBRELL, WC
中科院分区：
文献类型：
--
作者：
KUHN, HH;CHILD, AD;KIMBRELL, WC
在纺织品基材存在下吡咯的化学聚合导致形成导电的聚吡咯涂覆的织物。这些材料的应用包括微波衰减、静电荷消散和EMI屏蔽。这些材料的电导率的降解动力学进行了研究，发现进行多速率定律。在电导率损失的初始阶段，扩散控制机制占主导地位，其中氧扩散到聚吡咯膜中是速率限制的。在较长的时间内，降解遵循简单的一阶衰减。在聚合过程中使用的掺杂剂阴离子对所得膜的稳定性具有深远的影响，SEM分析表明，膜的形态在这种效果中起着重要的作用。在没有氧气的情况下，电导率损失明显较慢，并显示出对氯化物含量的强烈依赖性。
The chemical polymerization of pyrrole in the presence of textile substrates results in the formation of electrically conducting, polypyrrole coated fabrics. Applications of these materials include microwave attenuation, static charge dissipation, and EMI shielding. The degradation kinetics of the electrical conductivity of these materials has been investigated and found to proceed by multiple rate laws. In the initial stages of conductivity loss, a diffusion controlled mechanism predominates, where oxygen diffusion into the polypyrrole film is rate limiting. At longer times, the degradation follows a simple first-order decay. The dopant anion employed during polymerization has a profound influence on the stability of the resulting film, and SEM analysis indicate that film morphology plays an important role in this effect. In the absence of oxygen, conductivity loss is significantly slower and displays a strong dependence on chloride content.