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Dielectric relaxations in poly(monocyclohexyl itaconate)

✍ Scribed by Ricardo Díaz-Calleja; Ligia Gargallo; Deodato Radić

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
535 KB
Volume
46
Category
Article
ISSN
0021-8995

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✦ Synopsis

A study of the dielectric relaxation spectrum of poly (monocyclohexyl itaconate) (PMCHI) is performed by means of two experimental techniques: first, at variable frequency in the audio zone and, second, by thermally stimulated depolarization currents. Because of the high conductivity of the samples, there is a hidden dielectric relaxation that can be detected by using the macroscopic dynamic polarizability a* defined in terms of the dielectric complex permittivity t* by means of the equation a* = ( t* -1 ) / (c* + 2 ) . The transformation performed through this equation is discussed in order to obtain the dielectric relaxations in the zone of high temperatures and low frequencies of the spectrum.

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