Dielectric and light scattering analysis of the <alpha>-relaxation of an epoxy system

L. Comez; Daniele Fioretto; L. Palmieri; L. Verdini; Silvia Corezzi; J. Gapinski; A. Patkowski; W. Steffen; Edgar W. Fischer

doi:10.1117/12.373694

14 December 1999 Dielectric and light scattering analysis of the <alpha>-relaxation of an epoxy system

L. Comez, Daniele Fioretto, L. Palmieri, L. Verdini, Silvia Corezzi, J. Gapinski, A. Patkowski, W. Steffen, Edgar W. Fischer

Author Affiliations +

Proceedings Volume 4017, Polymers and Liquid Crystals; (1999) https://doi.org/10.1117/12.373694
Event: International Conference on Dielectric and Related Phenomena '98, 1998, Szczyrk, Poland

Abstract

The dynamics of an epoxy compound has been studied by wideband dielectric spectroscopy and light scattering above the glass transition temperature, T_g. A change of diffusion mechanism in the supercooled liquids has been recognized some tens of degrees above the glass transition, where a change in the temperature behavior of the main relaxation time occurs, together with the splitting of the structural and secondary relaxations and deviation from the Stokes-Einstein-Debye diffusion law. The light scattering results can be interpreted in terms of a correlation length for the structural relaxation which increases for decreasing temperature.

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L. Comez, Daniele Fioretto, L. Palmieri, L. Verdini, Silvia Corezzi, J. Gapinski, A. Patkowski, W. Steffen, and Edgar W. Fischer "Dielectric and light scattering analysis of the <alpha>-relaxation of an epoxy system", Proc. SPIE 4017, Polymers and Liquid Crystals, (14 December 1999); https://doi.org/10.1117/12.373694

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