Effect of polypropylenglycol on ellectrochemically sinthesized polyaniline
| Autor: | Uljanionok, Julija |
|---|---|
| Přispěvatelé: | Šalkus, Bronislovas, Stankevičiūtė, Živilė, Vitėnienė, Irena, Kapočius, Vidmantas Povilas, Gefenas, Vladas, Malinauskas, Albertas, Gefenienė, Audronė, Giraitis, Raimondas, Vilnius Pedagogical University |
| Jazyk: | litevština |
| Rok vydání: | 2005 |
| Předmět: | |
| Popis: | This paper analyses the effect of polypropylenglycol and potential-sweep rates on the form of polarization curves and polyaniline electrosynthesis speed by polarizing Pt and Ti electrodes through the potentiodynamic method. It has been found out that the polypropylenglycol’s effect accelerates formation of polyaniline on the surface of the Pt electrode at the initial stages of electrosynthesis grows up with the increase of concentration. By calculating the electric charge that has accumulated during the anode cycle we have established that the greatest effect is produced by small concentrations of polypropylenglycol. Further increase of polypropyleneglycol has had no marked effect. Polypropylenglycol reduces in the direction of positive potentials of the first anode spike. By synthesizing polyaniline on the surface of the Ti electrode, the effect accelerates the polypropylenglycol process is observed only at slow potential sweep rates velocities, whereas at the same time the increase in the speed results in the noticeable slowdown of the process. Polypropylenglycol penetrates indelibly into the polyaniline coating apparently forming a composite. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|