Characterization and properties of semicrystalline and amorphous perfluoropolymer: Poly(perfluoro-2-methylene-1,3-dioxolane)

František Mikeš, Josef Baldrian, Hongxiang Teng, Yasuhiro Koike, Yoshiyuki Okamoto

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9 Citations (Scopus)

Abstract

The low and the high molecular weight poly(perfluoro-2-methylene-1,3-dioxolane)s were prepared using perfluorobenzoyl peroxide as a free radical initiator. Both polymers obtained were semicrystalline and insoluble in organic solvents. The glass transition temperatures (Tg) of polymers obtained were 94-106°C, and their melting points were 224-229°C. Wide-angle X-ray diffraction measurements showed that polymers as prepared are semi-crystalline (21% crystalline fraction) and the crystallinity increased to 47% after annealing at 170°C. However, the films prepared by heating (at 230-250°C) and pressing of the high molecular weight polymers are transparent and flexible. The refractive index of the film is 1.3320 and 1.3245 at 533 and 1546nm, respectively. The transparent polymer films did not recrystallize while annealing below Tg, and they are chemically and thermally stable. This polymer may have potential applications in optoelectronic fields.

Original languageEnglish
Pages (from-to)1272-1277
Number of pages6
JournalPolymers for Advanced Technologies
Volume22
Issue number8
DOIs
Publication statusPublished - 2011 Aug 1

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Keywords

  • Amorphous
  • Crystallization
  • Fluoropolymers
  • Glass transition
  • Semicrystalline

ASJC Scopus subject areas

  • Polymers and Plastics

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