The critical temperature for structural recovery of amorphous glassy polymers

A. D. Drozdov

doi:10.1209/epl/i2000-00188-3

The critical temperature for structural recovery of amorphous glassy polymers

A. D. Drozdov

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4 Scopus citations

Abstract

Constitutive equations are derived for the viscoelastic response of amorphous polymers in the vicinity of the glass transition temperature T_g. The model is based on the theory of cooperative relaxation in a version of the concept of traps. Adjustable parameters are found by fitting data in static and dynamic tests for equilibrated polycarbonate and poly(vinyl acetate). The existence of some crossover temperature T_c is revealed at which the energy landscape becomes inhomogeneous. The temperature T_c may be treated as a counterpart of the critical temperature predicted by the mode-coupling theory for glass-forming liquids.

Original language	English
Pages (from-to)	569-575
Number of pages	7
Journal	Europhysics Letters
Volume	49
Issue number	5
DOIs	https://doi.org/10.1209/epl/i2000-00188-3
State	Published - 1 Mar 2000
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1209/epl/i2000-00188-3

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AB - Constitutive equations are derived for the viscoelastic response of amorphous polymers in the vicinity of the glass transition temperature Tg. The model is based on the theory of cooperative relaxation in a version of the concept of traps. Adjustable parameters are found by fitting data in static and dynamic tests for equilibrated polycarbonate and poly(vinyl acetate). The existence of some crossover temperature Tc is revealed at which the energy landscape becomes inhomogeneous. The temperature Tc may be treated as a counterpart of the critical temperature predicted by the mode-coupling theory for glass-forming liquids.

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The critical temperature for structural recovery of amorphous glassy polymers

Abstract

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