Dielectric and depolarization thermocurrent study of the γ relaxation in polyethylene isophthalamide
- 1 March 1975
- journal article
- research article
- Published by Wiley in Journal of Polymer Science: Polymer Physics Edition
- Vol. 13 (3) , 445-453
- https://doi.org/10.1002/pol.1975.180130301
Abstract
The depolarization thermocurrents (DTC) from polyethylene isophthalamide are studied below the glass‐transition temperature. The “entire” DTC spectrum is analyzed in terms of a continuous distribution of relaxation times; the corresponding distribution function is very close to that which fits data deduced from bridge measurements.The complex DTC spectrum can be experimentally resolved into single relaxation time processes. The analysis of each “elementary” DTC peak yields dielectric dispersion and relaxation time which allow one to calculate the frequency variation of the complex dielectric constant. The corresponding Cole–Cole plot is in good agreement with that deduced from studies of the “unresolved” γ relaxation.Keywords
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