Mechanical Relaxations and Transitions in Poly(Vinylidene Fluoride) PVDF

Abstract:

Dynamic mechanical spectroscopy and differential scanning calorimetry measurements carried out on PVDF films are reported. Several mechanical relaxations are observed around - 100° C, -40° C, and 17° C at 1 Hz, respectively. It is shown that thermomechanical treatments induce variation of material morphology as revealed by calorimetry and low-frequency mechanical spectroscopy. The effect of long-term ageing at room temperature is attributed to reversible melting and formation of small crystallites. The molecular rearrangements involved in ageing at room temperature are characterized by a slow dynamics.

• Periodical: Solid State Phenomena (Volume 115)
• Pages: 151-156
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.115.151
• Online since: August 2006
• Authors: A. Gasmi, M. Gouasmia, S. Etienne
• Keywords: Dye Sensitized Solar Cell (DSSC), Polymer, PVDF, Transition

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