PREPARATION AND CHARACTERIZATION OF AQUEOUS POLYANILINE DISPERSIONS

被引：48

作者：

GOSPODINOVA, N ^{[1
]}

TERLEMEZYAN, L ^{[1
]}

MOKREVA, P ^{[1
]}

STEJSKAL, J ^{[1
]}

KRATOCHVIL, P ^{[1
]}

机构：

[1] ACAD SCI CZECH REPUBL,INST MAKROMOLEC CHEM,CS-16206 PRAGUE 6,CZECHOSLOVAKIA

来源：

EUROPEAN POLYMER JOURNAL | 1993年 / 29卷 / 10期

关键词：

D O I：

10.1016/0014-3057(93)90185-I

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Stable aqueous dispersions of polyaniline (PANI) have been prepared using an underivatized poly(vinyl alcohol-co-acetate) (PVAL) as a steric stabilizer. Investigation of aqueous PANI dispersions by scanning electron microscopy and light scattering revealed that oxidative polymerization of aniline in the presence of PVAL results in the formation of spherical particles. Their size does not depend on the concentration of aniline in the polymerizing system but the uniformity of the particles seems to be improved as the aniline concentration is increased at least up to a certain limit. Electron absorption spectroscopy study of PANI dispersions made it possible to follow the changes of PANI on both molecular and supermolecular levels. When the initial concentration of aniline in the polymerizing system was ca 2 wt% (at a concentration of PVAL from 2 to 10 wt%), electrical conductivity of free standing films cast from dispersions reached 10(-1)S/cm.

引用

页码：1305 / 1309

页数：5

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