The chemical and colloidal stability of polyaniline dispersions

被引：36
作者：
Blinova, NV
Sapurina, I
Klimovic, J
Stejskal, J
机构：
[1] Acad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague, Czech Republic
[2] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia
[3] Charles Univ Prague, Fac Math & Phys, CR-18000 Prague, Czech Republic
来源：
POLYMER DEGRADATION AND STABILITY | 2005年 / 88卷 / 03期
关键词：
polyaniline; conducting polymer; colloids; dispersions; chemical stability; colloidal stability;
D O I：
10.1016/j.polymdegradstab.2004.11.014
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 chemical and colloidal stability of polyaniline dispersions stabilized with poly(N-vinylpyrrolidone) has been tested in acidic, neutral and alkaline aqueous media. The dispersions were exposed to elevated temperature of 105 degrees C for 1000 h, to sonication, repeated freezing-melting cycles, or to irradiation with UV-visible light. The changes in the chemical structure were assessed by UV-visible spectroscopy. The colloidal properties were characterized by determination of the particle size and polydispersity by dynamic light scattering. The stability of colloidal dispersions was good, both in the chemical and colloidal respect. It was not important whether the medium was acidic or alkaline. The colloids can be stored for 10 years without changes in their stability. (c) 2004 Elsevier Ltd. All rights reserved.
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页码：428 / 434
页数：7
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