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Optical and dielectric properties of some polymers with imidic structure

A. I. COSUTCHI1, C. HULUBEI1, S. IOAN1,*

Affiliation

  1. “Petru Poni” Institute of Macromolecular Chemistry, Iasi, 700487, Romania

Abstract

Three types of imidic polymers, i.e. Epiclon based polyimides, fluorinated polyimides and copolymaleimides containing azobenzene groups have been investigated. The optical and dielectric properties have been studied for several polyimides and their corresponding poly(amic acid)s and copolymaleimides. Calculations of the refractive index and specific refractive index increments are based on theoretical and experimental investigations. At optical frequencies when only electronic polarization occurs, the dielectric constants were determined from refractive indices measurements. The theoretical study indicates structural modifications for obtaining pre-established optical and dielectric properties..

Keywords

Polyimides, Refractive Index, Dielectric Constants.

Submitted at: Nov. 2, 2006
Accepted at: April 15, 2007

Citation

A. I. COSUTCHI, C. HULUBEI, S. IOAN, Optical and dielectric properties of some polymers with imidic structure, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 4, pp. 975-980 (2007)