Investigation of correlation between crystalline phase transition and lamellar morphorogy of vinylidene fluoride-trifluoroethylene copolymers by synchrotron DSC/WAXD/SAXS simultaneous measurements

H. Masunaga, S. Sasaki, M. Hanesaka, K. Tashiro, M. Takata

Research output: Contribution to conferencePaper

Abstract

Both of the crystalline forms I and II contribute to the ferroelectric phase transition for the Vinylidene fluoride-trifluoroethylene copolymer with VDF contents higher than 80 mol% The morphological change and its relation with the crystal structural change have not yet been clarified at all. We will report the experimental data concerning the simultaneous measurements of DSC/WAXD/SAXS during the heating and cooling process of VDF 82% copolymer samples. For the melt-quenched sample, the lamella formed with II form crystalline changed from II form to HT phase, and increase of a long period occurred a thickness of lamella at the same with a temperature rise. In the cooling process the lamella would be formed with I form crystalline and that formed with II form were observed.

Original languageEnglish
Pages3173-3174
Number of pages2
Publication statusPublished - 2006 Dec 1
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sep 202006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period06/9/2006/9/22

Keywords

  • Crystalline polymer
  • DSC/SAXS/WAXD
  • Ferroelectric phase transition
  • Vinylidene fluoride-trifluoroethylene copolymer

ASJC Scopus subject areas

  • Engineering(all)

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    Masunaga, H., Sasaki, S., Hanesaka, M., Tashiro, K., & Takata, M. (2006). Investigation of correlation between crystalline phase transition and lamellar morphorogy of vinylidene fluoride-trifluoroethylene copolymers by synchrotron DSC/WAXD/SAXS simultaneous measurements. 3173-3174. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.