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α to β phase transformation and microestructural changes of PVDF films induced by uniaxial stretch

Journal Article


Abstract


  • The phase transformation from to poly(vinylidene fluoride) (PVDF) through a stretching process at different temperatures was investigated. Samples of originally -PVDF were stretched uniaxially at different temperatures at draw ratios from 1 to 5. The stretched samples were studied and characterized by infrared spectroscopy, scanning electron microscopy, and differential scanning calorimetry. The maximum -phase content was achieved at 80C and a stretch ratio of 5, but the samples still showed 20% of the original -phase. Accompanying the phase transformation, an orientation of the polymer chains was observed. The stretching process also influenced the degree of crystallinity of the polymer. Poling of the samples also improves the - to -phase transformation.

Publication Date


  • 2009

Citation


  • Sencadas, V., Grégório, R. & Lanceros-Méndez, S. (2009). α to β phase transformation and microestructural changes of PVDF films induced by uniaxial stretch. Journal of Macromolecular Science Part B: Physics, 48 (3), 514-525.

Scopus Eid


  • 2-s2.0-70449604771

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3740

Number Of Pages


  • 11

Start Page


  • 514

End Page


  • 525

Volume


  • 48

Issue


  • 3

Abstract


  • The phase transformation from to poly(vinylidene fluoride) (PVDF) through a stretching process at different temperatures was investigated. Samples of originally -PVDF were stretched uniaxially at different temperatures at draw ratios from 1 to 5. The stretched samples were studied and characterized by infrared spectroscopy, scanning electron microscopy, and differential scanning calorimetry. The maximum -phase content was achieved at 80C and a stretch ratio of 5, but the samples still showed 20% of the original -phase. Accompanying the phase transformation, an orientation of the polymer chains was observed. The stretching process also influenced the degree of crystallinity of the polymer. Poling of the samples also improves the - to -phase transformation.

Publication Date


  • 2009

Citation


  • Sencadas, V., Grégório, R. & Lanceros-Méndez, S. (2009). α to β phase transformation and microestructural changes of PVDF films induced by uniaxial stretch. Journal of Macromolecular Science Part B: Physics, 48 (3), 514-525.

Scopus Eid


  • 2-s2.0-70449604771

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3740

Number Of Pages


  • 11

Start Page


  • 514

End Page


  • 525

Volume


  • 48

Issue


  • 3