Thermally stimulated depolarization current in pure poly(ethylene-co-vinyl acetate) and poly(ethylene-co-vinyl acetate) composites with different amounts of polypyrrole/carbon nanoparticles (of various weight ratios, 100:0, 95:5, 90:10, 85:15, 80:20, and 70:30) have been investigated at poling temperature 363 K using different polarizing voltage. Thermograms of pure and composite samples have two or three peaks over all temperature ranges depending on the polarizing voltage. The decrease in peak height with increased polarized voltage is observed in pure poly(ethylene-co-vinyl acetate) samples loaded with 5%, 10%, 15%, and 30% polypyrrole due to the detrapping of the large amounts of charge results in electrode blocking and decrease in thermally stimulated depolarization current in those samples. The molecular parameters, such as activation energy E, charge released Q, and relaxation times τ0 and τ m for thermally stimulated depolarization current peaks have been estimated.

中文翻译：

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EVA-导电PPy复合材料的热激去极化电流特性

纯聚（乙烯-共-乙酸乙烯酯）和聚（乙烯-共-乙酸乙烯酯）复合材料与不同量的聚吡咯/碳纳米粒子（不同重量比，100:0、95:5、90: 10、85:15、80:20 和 70:30) 已在 363 K 的极化温度下使用不同的极化电压进行了研究。纯样品和复合样品的热谱图在所有温度范围内都有两个或三个峰值，具体取决于极化电压。在负载 5%、10%、15% 和 30% 聚吡咯的纯聚（乙烯-共-醋酸乙烯酯）样品中观察到峰高随极化电压的增加而降低，这是由于大量电荷的释放导致这些样品中的电极阻塞和热刺激去极化电流降低。分子参数，