Dielectric Relaxation Due to the Migraion of Ionic Remnants in Amophous Polymers

Yamada T; Murakami I

Korea Polymer Journal, Vol.5, No.4, 228-233, December, 1997

As for amorphous polymers in the rubbery state, in addition to the dielectric α-relaxation peak, a relatively sharp dielectric absorption peak was found in the frequency region below 10^-1 Hz. The relation between the dielectric relaxation frequency (∫_m) for each adsorption peak and the electric conductivity for the DC conduction (σ) caused by ionic remnants was found to be repreasented by the empirical equation : σ=σ₀ · (∫_m)ⁿ. From the examination of this relation, it became clear that the dielectric absorption found in the ultra low frequency region is attributed to the dielectric relaxation due to the space charge polarization caused by the jump of ionic remnants in amorphous polymers.

[References]

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Hamon BV, Proc. Inst. Electr. Engrs., 99(W), 151 (1952)
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[1] Kosaki M, Sugiyama K, Iede M, J. Appl. Phys., 42, 3388 (1971)

[2] Yamada T, Murakami I, Rept. Progr. Polym. Phys., 39, 496 (1996)

[3] Hamon BV, Proc. Inst. Electr. Engrs., 99(W), 151 (1952)

[4] Mott NF, Gurney RW, Electronic Process in Ionic Crystals, Oxford University Press, Oxford (1948)

[5] Kallweit JH, J. Polym. Sci. A: Polym. Chem., 4, 337 (1966)

[6] Sasabe H, Saito S, Polym. J., 3, 624 (1972)