The dynamics of the glass transition in a semicrystalline PET studied by mechanical and dielectric spectroscopic methods

The conformational chain mobility of a semicrystalline poly(ethylene terephthalate), PET, is studied in the glass transition region by different techniques: Thermally Stimulated Recovery (TSR) in the tensile mode using both global and thermal sampling experiments, Dynamic Mechanical Analysis (DMA) a...

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Bibliographic Details
Main Author: Alves, N. M. (author)
Other Authors: Lanceros-Méndez, S. (author), Mano, J. F. (author), Gómez Ribelles, J. L. (author)
Format: article
Language:eng
Published: 2002
Subjects:
alpha relaxation
dynamic mechanical analysis
thermally stimulated recovery
viscoelasticity
Science & Technology
Online Access:http://hdl.handle.net/1822/115
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/115
Description
Summary:The conformational chain mobility of a semicrystalline poly(ethylene terephthalate), PET, is studied in the glass transition region by different techniques: Thermally Stimulated Recovery (TSR) in the tensile mode using both global and thermal sampling experiments, Dynamic Mechanical Analysis (DMA) and dielectric relaxation spectroscopy. The viscoelastic response observed above Tg in the mechanical results is attributed to the manisfestation of irreversible viscous flow.

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