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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Detalhes bibliográficos
Autor principal: Alves, N. M. (author)
Outros Autores: Lanceros-Méndez, S. (author), Mano, J. F. (author), Gómez Ribelles, J. L. (author)
Formato: article
Idioma:eng
Publicado em: 2002
Assuntos:
alpha relaxation
dynamic mechanical analysis
thermally stimulated recovery
viscoelasticity
Science & Technology
Texto completo:http://hdl.handle.net/1822/115
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/115
Descrição
Resumo: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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