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Dynamic mechanical analysis and creep behaviour of β-PVDF films

Conference Paper


Abstract


  • In this work, tensile dynamic mechanical analysis (DMA) was used to characterise the solid-state rheological properties of a commercial β-polyvinylidene fluoride (PVDF) film in the two main directions (longitudinal and transversal to the stretch direction). The β-relaxation, assigned to the segmental motions within the amorphous phase, is observed at ∼-25 °C. The αc-relaxation is observed above room temperature. This relaxation is the main responsible for the anelastic properties of the material and to the short-term creep behaviour. Longer-term creep tests along the longitudinal direction were also performed and the Eyring model was applied, in order to characterize the flow-process within the polymeric structure. The results suggest that long-term creep is mostly controlled by the deformation of amorphous tie-chains that connect adjacent crystalline lamellae. © 2003 Published by Elsevier B.V.

Publication Date


  • 2004

Citation


  • Mano, J. F., Sencadas, V., Costa, A. M., & Lanceros-Méndez, S. (2004). Dynamic mechanical analysis and creep behaviour of β-PVDF films. In Materials Science and Engineering A Vol. 370 (pp. 336-340). doi:10.1016/j.msea.2002.12.002

Scopus Eid


  • 2-s2.0-1842636776

Start Page


  • 336

End Page


  • 340

Volume


  • 370

Issue


  • 1-2

Abstract


  • In this work, tensile dynamic mechanical analysis (DMA) was used to characterise the solid-state rheological properties of a commercial β-polyvinylidene fluoride (PVDF) film in the two main directions (longitudinal and transversal to the stretch direction). The β-relaxation, assigned to the segmental motions within the amorphous phase, is observed at ∼-25 °C. The αc-relaxation is observed above room temperature. This relaxation is the main responsible for the anelastic properties of the material and to the short-term creep behaviour. Longer-term creep tests along the longitudinal direction were also performed and the Eyring model was applied, in order to characterize the flow-process within the polymeric structure. The results suggest that long-term creep is mostly controlled by the deformation of amorphous tie-chains that connect adjacent crystalline lamellae. © 2003 Published by Elsevier B.V.

Publication Date


  • 2004

Citation


  • Mano, J. F., Sencadas, V., Costa, A. M., & Lanceros-Méndez, S. (2004). Dynamic mechanical analysis and creep behaviour of β-PVDF films. In Materials Science and Engineering A Vol. 370 (pp. 336-340). doi:10.1016/j.msea.2002.12.002

Scopus Eid


  • 2-s2.0-1842636776

Start Page


  • 336

End Page


  • 340

Volume


  • 370

Issue


  • 1-2