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Dielectric Analysis Of Semi-Crystalline Poly(Ethylene Terephthalate)

Published online by Cambridge University Press:  15 February 2011

Jianghua Wei ,
Richard Delgado ,
Martin C. Hawley  and
Mark T.Demeuse
Jianghua Wei
Affiliation:
Department of Chemical Engineering, Michigan State University, E. Lansing, MI 48824
Richard Delgado
Affiliation:
Department of Chemical Engineering, Michigan State University, E. Lansing, MI 48824
Martin C. Hawley
Affiliation:
Department of Chemical Engineering, Michigan State University, E. Lansing, MI 48824
Mark T.Demeuse
Affiliation:
EniChem America Inc., Monmouth Junction, NJ 08852.
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Abstract

Dielectric properties of poly(ethylene terephthalate) (PET) were measured over a frequency range of 10 KHz to 2.45 GHz and a temperature range of 20 to 110°C. Relaxation peaks were identified at 1) fixed frequency with variable temperatures, and 2) fixed temperature with variable frequencies. The crystallinity of poly (ethylene terephthalate) was measured using differential scanning calorimetry (DSC). Relationships between crystallinity, dielectric properties, and location of the dielectric relaxation peak on the frequency and temperature scales were studied for poly(ethylene terephthalate). Also, the dielectric loss factor decreases with increased crystallinity at 2.45 GHz and 4 GHz within the temperature range studied.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 347: Symposium O – Microwave Processing of Materials IV , 1994 , 735
Copyright
Copyright © Materials Research Society 1994

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References

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