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| Titel: |
STUDY OF FERROELECTRICITY IN POLYANILINE |
| Auteur: |
Bahgat, A. A. Sayyah, S. M. Abd-Elsalam, H. M. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 52 (2003) nr. 6 pagina's 499-515 |
| Jaar: |
2003-06 |
| Inhoud: |
Polymerization of aniline (ANI) was achieved in aqueous medium using sodium dichromate as oxidant in presence of hydrochloric acid. The obtained polyaniline was characterized by X-ray diffraction and electron microscopic studies. The thermogravimetric analysis (TGA) and differential thermal analysis (DTA) results were used to study thermal degradation of the polymer. The unusually high dielectric constant of the produced polyaniline gives an indication for the important dielectric properties of the prepared PANI. The present study confirmed the observation of ferroelectricity of the prepared polyaniline with a Curie's temperature at 323 K. This observation is unique concerning this polymer which has the advantage of being prepared at room temperature. The ferroelectric phenomenon of this conducting polymer was confirmed by studying pyroelectricity, (P-E) hysteresis loop and polarization as a function of temperature. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 8 gevonden artikelen
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