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Influence of the β-phase content and degree of crystallinity on the piezo-and ferroelectric properties of poly(vinylidene fluoride)

Journal Article


Abstract


  • The ferroelectric switching behaviour and piezoelectric response of poly(vinylidene fluoride) (PVDF) prepared by drawing at stretching ratios from 1 to 5 and temperatures from 80 to 140 °C has been studied. Stretching ratio and temperature deeply influence the α (non-ferroelectric) to β (ferroelectric) phase transformation. The variations in the phase content are accompanied by changes in the degree of crystallinity and the microstructure, all of them influencing the macroscopic piezoelectric and ferroelectric response of the material. This work shows how the piezo-and ferroelectric behaviour of PVDF depends on the aforementioned parameters and, in particular, on the crystalline β-phase content. Coercive electric field, remnant polarization and saturation polarization increase with increasing ferroelectric β-phase content in the sample. In a similar way, samples with higher β-phase content show higher d33 piezoelectric coefficients.

UOW Authors


  •   Gomes, João (external author)
  •   Nunes, J S. (external author)
  •   Gomes da Silva Sencadas, Vitor
  •   Lanceros-Méndez, Senentxu (external author)

Publication Date


  • 2010

Citation


  • Gomes, J., Nunes, J. Serrado., Sencadas, V. & Lanceros-Méndez, S. (2010). Influence of the β-phase content and degree of crystallinity on the piezo-and ferroelectric properties of poly(vinylidene fluoride). Smart Materials and Structures, 19 (6), 1-7.

Scopus Eid


  • 2-s2.0-77953573457

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3732

Number Of Pages


  • 6

Start Page


  • 1

End Page


  • 7

Volume


  • 19

Issue


  • 6

Abstract


  • The ferroelectric switching behaviour and piezoelectric response of poly(vinylidene fluoride) (PVDF) prepared by drawing at stretching ratios from 1 to 5 and temperatures from 80 to 140 °C has been studied. Stretching ratio and temperature deeply influence the α (non-ferroelectric) to β (ferroelectric) phase transformation. The variations in the phase content are accompanied by changes in the degree of crystallinity and the microstructure, all of them influencing the macroscopic piezoelectric and ferroelectric response of the material. This work shows how the piezo-and ferroelectric behaviour of PVDF depends on the aforementioned parameters and, in particular, on the crystalline β-phase content. Coercive electric field, remnant polarization and saturation polarization increase with increasing ferroelectric β-phase content in the sample. In a similar way, samples with higher β-phase content show higher d33 piezoelectric coefficients.

UOW Authors


  •   Gomes, João (external author)
  •   Nunes, J S. (external author)
  •   Gomes da Silva Sencadas, Vitor
  •   Lanceros-Méndez, Senentxu (external author)

Publication Date


  • 2010

Citation


  • Gomes, J., Nunes, J. Serrado., Sencadas, V. & Lanceros-Méndez, S. (2010). Influence of the β-phase content and degree of crystallinity on the piezo-and ferroelectric properties of poly(vinylidene fluoride). Smart Materials and Structures, 19 (6), 1-7.

Scopus Eid


  • 2-s2.0-77953573457

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3732

Number Of Pages


  • 6

Start Page


  • 1

End Page


  • 7

Volume


  • 19

Issue


  • 6