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Enthalpy relaxation in glassy polymers

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Summary

Constitutive equations are derived for enthalpy recovery in amorphous glassy polymers. The model is based on the concept of cooperative relaxation which treats a polymer as an ensemble of flow units rearranging at random times. The rate of rearrangement is determined by the Eyring theory of thermally activated processes. Fair agreement is demonstrated between results of numerical simulation and experimental data for polycarbonate, poly(ether imide), poly(methyl methacrylate), polystyrene and a glycerol glass.

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Authors and Affiliations

  1. Institute for Industrial Mathematics, 4 Hanachtom Street, Beersheba 84311, Israel, , , , , , IL

    Aleksey D. Drozdov

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  1. Aleksey D. Drozdov
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Received: 5 December 1999/Revised version: 28 February 2000/Accepted: 2 March 2000

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Drozdov, A. Enthalpy relaxation in glassy polymers. Polymer Bulletin 44, 353–360 (2000). https://doi.org/10.1007/s002890050613

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  • DOI: https://doi.org/10.1007/s002890050613

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