Glass transition investigated by a combined protocol using thermostimulated depolarization currents and differential scanning calorimetry

L. Delbreilh; M. Negahban; M. Benzohra; C. Lacabanne; J. M. Saiter

doi:10.1007/s10973-009-0060-1

Glass transition investigated by a combined protocol using thermostimulated depolarization currents and differential scanning calorimetry

L. Delbreilh, M. Negahban, M. Benzohra, C. Lacabanne, J. M. Saiter

Mechanical & Materials Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Relaxation times of bisphenol A polycarbonate around the glass transition temperature are estimated using the combination of differential scanning calorimetry (DSC) and thermostimulated depolarization currents (TSDC). These measurements are performed using samples with different thermal histories below and above the vitrification transformation. This protocol enables the extension of the range of equilibrium relaxation times measured by dielectric spectroscopy. By this mean we may recalculate the values of the Kauzmann temperature and fragility index.

Original language	English (US)
Pages (from-to)	865-871
Number of pages	7
Journal	Journal of Thermal Analysis and Calorimetry
Volume	96
Issue number	3
DOIs	https://doi.org/10.1007/s10973-009-0060-1
State	Published - Jun 2009

Keywords

Differential scanning calorimetry
Glass transition
Thermostimulated currents

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry

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10.1007/s10973-009-0060-1

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AU - Delbreilh, L.

AU - Negahban, M.

AU - Benzohra, M.

AU - Lacabanne, C.

AU - Saiter, J. M.

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AB - Relaxation times of bisphenol A polycarbonate around the glass transition temperature are estimated using the combination of differential scanning calorimetry (DSC) and thermostimulated depolarization currents (TSDC). These measurements are performed using samples with different thermal histories below and above the vitrification transformation. This protocol enables the extension of the range of equilibrium relaxation times measured by dielectric spectroscopy. By this mean we may recalculate the values of the Kauzmann temperature and fragility index.

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KW - Thermostimulated currents

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