Low-temperature crystallization of P(VDF-TrFE-CFE) studied by Flash DSC

Low-temperature crystallization of P(VDF-TrFE-CFE) studied by Flash DSC We employed commercially available chip-calorimeter Flash DSC1 to investigate the low-temperature crystallization behaviors of random copolymer P(VDF-TrFE-CFE) (poly(vinylidenefluoride-trifluoroethylene-chlorofluoroethylene)), and compared them to the parallel results of P(VDF-TrFE). The resulted ferroelectric crystalline phases were identified by WAXD and FTIR. We found that, although our P(VDF-TrFE-CFE) contains higher content of VDF sequences than our P(VDF-TrFE), it performs crystallization of the ferroelectric phase at low temperatures much slower, and even exhibits cold crystallization upon heating back from fast cooling. We attributed the slowness to the effect of chemical confinement of large CFE comonomers. Our results facilitate better understanding of structural optimization for the electroactive applications of PVDF-based random copolymers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Elsevier

Low-temperature crystallization of P(VDF-TrFE-CFE) studied by Flash DSC

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier Ltd
ISSN
0032-3861
D.O.I.
10.1016/j.polymer.2016.01.003
Publisher site
See Article on Publisher Site

Abstract

We employed commercially available chip-calorimeter Flash DSC1 to investigate the low-temperature crystallization behaviors of random copolymer P(VDF-TrFE-CFE) (poly(vinylidenefluoride-trifluoroethylene-chlorofluoroethylene)), and compared them to the parallel results of P(VDF-TrFE). The resulted ferroelectric crystalline phases were identified by WAXD and FTIR. We found that, although our P(VDF-TrFE-CFE) contains higher content of VDF sequences than our P(VDF-TrFE), it performs crystallization of the ferroelectric phase at low temperatures much slower, and even exhibits cold crystallization upon heating back from fast cooling. We attributed the slowness to the effect of chemical confinement of large CFE comonomers. Our results facilitate better understanding of structural optimization for the electroactive applications of PVDF-based random copolymers.

Journal

PolymerElsevier

Published: Feb 10, 2016

References

  • Poly(vinylidene fluoride)
    Lovinger, A.J.
  • Thermochim. Acta
    Jiang, X.M.; Li, Z.; Wang, J.; Gao, H.H.; Zhou, D.S.; Tang, Y.W.; Hu, W.B.
  • Thermochim. Acta
    Mathot, V.; Pyda, M.; Pijpers, T.; Vanden Poel, G.; Van de Kerkhof, E.; Van Herwaarden, S.; Van Herwaarden, F.; Leenaers, A.

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