Polyaniline dispersions .7. Dynamic light scattering study of particle formation

被引：37

作者：

Riede, A ^{[1
]}

Helmstedt, M ^{[1
]}

Riede, V ^{[1
]}

Stejskal, J ^{[1
]}

机构：

[1] ACAD SCI CZECH REPUBL,INST MACROMOL CHEM,CR-16206 PRAGUE 6,CZECH REPUBLIC

来源：

COLLOID AND POLYMER SCIENCE | 1997年 / 275卷 / 09期

关键词：

dynamic light scattering; polyaniline; dispersions; dispersion polymerization; colloidal silica; submicrometer particles;

D O I：

10.1007/s003960050153

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

When aniline is oxidized in the presence of colloidal silica, composite polyaniline-silica particles of submicrometer size are obtained. Dynamic light scattering was used to monitor the course of dispersion polymerization of aniline and the formation of particles. The increase of a hydrodynamic radius of particles was observed as polyaniline had been produced. Additional increase in particle size after polymerization has also been recorded. The rate of aniline polymerization was found to increase with increasing temperature in the range 0-50 degrees C. Well-defined particles are formed below 30 degrees C while above this temperature the colloidal stability of the resulting systems is limited. The activation energy of aniline polymerization was estimated.

引用

页码：814 / 820

页数：7

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