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Structure Evolution During Ferroelectric Phase Transition in a Vinylidene Fluoride/Trifluorethylene Copolymer

Published

Author(s)

Z G. Wang, E Balizer, B S. Hsiao, Charles C. Han

Abstract

Results from DSC, SAXS and WAXD show some new insights into the evolution of structural variables during Curie transition in PVDF/TrFE copolymer. The differences of long period evolution between the melt-crystallized samples in the paraelectric phase (> 80 degrees C) and in the ferroelectric phase (74 degrees C) are observed in the Curie transition region for this copolymer, for the first time according to our knowledge. The decrease in the SAXS intensity indicates the electron density in paraelectric phase is less than that in ferroelectric phase. All our data indicate that the Curie transition is a gradual process.
Citation
Journal of the American Chemical Society
Volume
223

Keywords

crystallization, Curie transition, differential scanning calorimetry, ferroelectric, paraelectric, small-angle X-ray scattering, vinylidene fluoride and trifluoroethylen, wide-angle X-ray diffraction

Citation

Wang, Z. , Balizer, E. , Hsiao, B. and Han, C. (2002), Structure Evolution During Ferroelectric Phase Transition in a Vinylidene Fluoride/Trifluorethylene Copolymer, Journal of the American Chemical Society (Accessed April 20, 2024)
Created March 31, 2002, Updated October 12, 2021