Determination of glass transition using dielectric spectroscopy?

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Gyorgy Banhegyi

Please read the following brochure of novocontrol. It is a good introduction Article Dielectric Spectroscopy on the Dynamics of Amorphous Polymeric Systems

Fatima ezzahra Bouharras

Thank you sir Gyorgy Banhegyi for this document.

I would use Vogel-Fulcher-Tammann equation and get the Tv (vogel temperature) which is also the ideal glass transition temperature, but in my case, the relaxation related to glass transition does not follow this equation, but Arrhenius one.

The deviation from the Arrhenius picture is usually visible in the neighborhood of the Tg. What is the system you are studying? What is the temperature and frequency? Could you attach data?

The study was performed on a nanocomposite material in the frequency and temperature range from 10e-2 to 10e7 Hz and -100 °C to 100 °C, respectively.