AC electrical behavior of a novel electro-optic polyimide

S. Abdul-Jawad, A. Al-Najjar, M. M. Bader, H. A. Saadeh, L. Yu

Research output: Contribution to journalConference articlepeer-review


AC electrical behavior of a novel aromatic electro-optic polyimide was investigated in the temperature range 25-300°C and a frequency range 1 Hz - 1 MHz. The measurements were performed on a polymer thin film casted onto ITO glass. The imaginary and real components of resistivity, permittivity and electric modulous were determined. The results show that the polymer has high thermal stability below 200°C, where the resistivity, dielectric constant and permittivity are nearly temperature-independent indicating highly rigid structure. Above the temperature, however, a well defined broad peak corresponding to a relaxation transition process was observed for which the activation energy was calculated to be approx.8.5 Kcal/mole. This relaxation is associated with a restricted local rotational motion of the side chain chromophore.

Original languageEnglish
Pages (from-to)324
Number of pages1
JournalPolymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering
Publication statusPublished - 1997
EventProceedings of the 1997 Spring ACS Meeting - San Francisco, CA, USA
Duration: Apr 13 1997Apr 17 1997

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics


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