Kinetics of the electrochemical degradation of polypyrrole

被引：49

作者：

Mazeikiene, R ^{[1
]}

Malinauskas, A ^{[1
]}

机构：

[1] Inst Chem, LT-2600 Vilnius, Lithuania

来源：

POLYMER DEGRADATION AND STABILITY | 2002年 / 75卷 / 02期

关键词：

polypyrrole; degradation; stability; kinetics;

D O I：

10.1016/S0141-3910(01)00226-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The kinetics of the electrochemical degradation of polypyrrole has been investigated in aqueous solutions, containing HNO3 or NaNO3. For HNO3 solution, it has been found that the first-order degradation rate constant (k) is ca: 10(-5) s(-1) within the electrode potential limits of 0.3 to 0.6 V vs. Ag/AgCl. Over 0.6 V, a steep increase of k with increasing electrode potential was found, reaching ca. 9.8 V-1 for logk. For NaNO3 solutions, the k value ranges from 2.8(.)10(-5) to 3.4(.)10(-3) s(-1) within the electrode potential limits of 0.3 to 0.9 V, and a linear slope of logk vs. E of 5.1 V-1 was found within the E limits of 0.4 to 0.9 V. (C) 2002 Elsevier Science Ltd. All rights reserved.

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页码：255 / 258

页数：4

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