Title of article :
Polyaniline and polypyrrole prepared in the presence of surfactants: a comparative conductivity study
Author/Authors :
Stejskal، نويسنده , , Jaroslav and Omastov?، نويسنده , , M?ria and Fedorova، نويسنده , , Svetlana and Proke?، نويسنده , , Jan and Trchov?، نويسنده , , Miroslava، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2003
Pages :
6
From page :
1353
To page :
1358
Abstract :
Polyaniline and polypyrrole have been prepared by chemical oxidative polymerization of the corresponding monomers in an aqueous medium containing an anionic surfactant—sodium bis(2-ethylhexyl) sulfosuccinate, dodecylbenzenesulfonic acid and its sodium salt, and sodium dodecyl sulfate. Determination of the yield, elemental composition and density proved, and FTIR spectroscopy confirmed, that the anionic surfactants become incorporated in the conducting polymers. The polymerizations in the presence of a cationic surfactant, tetradecyltrimethylammonium bromide, were carried out for comparison. While the conductivity of polypyrrole became enhanced after the introduction of an anionic surfactant, the changes in the conductivity of polyaniline were marginal. The conductivity changes in both polymers during thermal ageing were measured at 175 °C. The electrical stability of polyaniline was better than that of polypyrrole. The presence of a surfactant improved the stability of conductivity of polypyrrole but reduced the electrical stability of polyaniline.
Keywords :
Polyaniline , conducting polymer , Polypyrrole
Journal title :
Polymer
Serial Year :
2003
Journal title :
Polymer
Record number :
1719257
Link To Document :
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