Thermally stimulated depolarisation current measurements and interpretation [polymer glass transition studies]

Author

Bayard, J. ; Grenet, J. ; Cabot, C. ; Dargent, E.

Author_Institution

Fac. des Sci. de Rouen, Lab. LECAP, Mont Saint Aignan, France

Volume

144

Issue

4

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

168

Lastpage

173

Abstract

The fictive thermodynamic equilibrium temperature T_fi determined from thermal investigation (differential scanning calorimetry, for example) and the compensation temperature T_c introduced in thermally stimulated depolarisation current measurements are compared. A brief description is given of the experimental apparatus of TSDC measurements built in the authors´ laboratory, and the main parameters and results obtained from the two methods (DSC and TSDC) are given. An interpretation of the experimental equality observed between the experimental values of the thermodynamic equilibrium temperature T _fi obtained from DSC investigations and the temperature compensation T_c introduced in TSDC measurements is proposed

Keywords

dielectric relaxation; glass transition; polymers; thermal analysis; thermally stimulated currents; alpha relaxation; beta relaxation; compensation temperature; differential scanning calorimetry; experimental equality; fictive thermodynamic equilibrium temperature; glass transition; polymers; relaxation model; thermal analysis; thermally stimulated depolarisation current measurements;

fLanguage

English

Journal_Title

Science, Measurement and Technology, IEE Proceedings -

Publisher

iet

ISSN

1350-2344

Type

jour

DOI

10.1049/ip-smt:19970733

Filename

612135