Die nachfolgenden Dokumente entstammen der Datenbank APOLLIT des Datenbankportals
POLYBASE.COM.
Weitere Informationen zum entsprechenden Dokument sind im
kostenpflichtigen Bereich abrufbar.
Nähere Informationen zu den hinterlegten Datenbanken erhalten Sie
hier.
Information zum Portal-Betreiber:
Impressum
Allgemeine Geschäftsbedingungen
| Dokument Nr. | 200301457 (klicken Sie bitte auf die Dokumentnummer um dieses Dokument anzuzeigen) |
| Titel | Electrorheological and dielectric properties of polypyrrole dispersions |
| Abstract | The electrorheological (ER) response and dielectric properties of the polypyrrole (PPy) dispersions in mineral oil were investigated. Various PPy particles were synthesized controlling the amount of oxidant and surfactant to investigate the effect of these variables on the ER response. The ER response increases with the oxidant and surfactant amount, passes through a maximum, and then decreases with the oxidant and surfactant amount. However, the decrease in the ER response at large surfactant amounts is not so significant compared to that at large oxidant amounts. The increase in the ER response with the oxidant and surfactant amount arises from the enhanced particle polarization originated from the increased PPy conductivity. The decrease in the ER response at large oxidant amounts seems to arise from the increased conduction between the PPy particles, while that at large surfactant amounts arises from the decreased particle polarization. (orig.) |
| Control terms engl. | DIELECTRIC LOSS; DIELECTRIC CONSTANT; DISPERSIONS; PROPERTIES, ELECTRICAL; ESTERS; YIELD POINT; IR SPECTROSCOPY; CONCENTRATION; CONDUCTIVITY, ELECTRICAL; OILS; OXIDATION; POLYPYRROLE; RHEOLOGY; SHEAR; STRESS, MECHANICAL; SULFONIC ACIDS; PARTICLE SIZE |
| Control terms german | DIELEKTRISCHE VERLUSTE; DIELEKTRIZITAETSKONSTANTE; DISPERSIONEN; EIGENSCHAFTEN, ELEKTRISCHE; ESTER; FLIESSGRENZE; IR-SPEKTROSKOPIE; KONZENTRATION; LEITFAEHIGKEIT, ELEKTRISCHE; OELE; OXIDATION; POLYPYRROL; RHEOLOGIE; SCHUB; SPANNUNG, MECHANISCHE; SULFONSAEUREN; TEILCHENGROESSE |