THERMALLY STIMULATED DEPOLARIZATION CURRENT MEASUREMENTS - A NEW RELATIONSHIP TO LINK THE DEPENDENCE OF THE RELAXATION-TIME WITH TEMPERATURE

Authors
BAYARD J DARGENT E CABOT C LEBAUDY P GRENET J
Citation
J. Bayard et al., THERMALLY STIMULATED DEPOLARIZATION CURRENT MEASUREMENTS - A NEW RELATIONSHIP TO LINK THE DEPENDENCE OF THE RELAXATION-TIME WITH TEMPERATURE, JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 51(3), 1998, pp. 879-888
Citations number
4
Categorie Soggetti
Chemistry Analytical","Chemistry Physical
Journal title
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
ISSN journal
13886150 → ACNP
Volume
51
Issue
3
Year of publication
1998
Pages
879 - 888
Database
ISI
SICI code
0368-4466(1998)51:3<879:TSDCM->2.0.ZU;2-K
Abstract
A law is proposed to link the evolution of the relaxation time tau wit h the temperature T in thermally stimulated depolarization current (TS DC) experiments (complex spectrum and elementary spectral. This model is equivalent to the classical one (compensation law) around T-c. Its response, obtained by simulation of the complex and elementary spectra , is very close to the real depolarization current curves throughout t he whole range of temperatures. Experimental results were obtained on an amorphous copolymer: PETN8 (92% of poly(ethylene terephthalate) (PE T); 8% poly(ethylene naphthalene) (PEN).