Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Dehydrofluorination of Vinylidene Fluoride- Trifluoroethylene Copolymer by Phase Transfer Catalysis

Vinylidene Fluoride-Trifluoroethylene 공중합체의 상전이촉매작용에 의한 탈불화수소화

  • 조재환 (건국대학교 공과대학 섬유공학과) ;
  • 송하율 (한국화이버, 전남대학교 공과대학 섬유공학과) ;
  • 국윤환
  • Published : 1995.01.01

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Abstract

Films of vinylidene fluoride - trifluoroethylene (VDF-TrFE ) copolymer were dehydrofluorinated in aqueous sodium hydroxide solutions by phase transfer catalysis(PTC). Conjugated C=C double bonds in the polymer back-bone were bonds in the dehydrofluorination of VDF-TrFE copolymer. The color of film became brown and finally black with rigid double bonds during the PTC reaction. It was found from UV/VIS spectroscopic measurements that the length of conjugated double bonds of dehydrofluorinated VDF-TrFE copolymer was longer than that of dehydrofluorinated poly(vinylidene fluoride) . It was ascribed to the reaction activity due to the difference of solubility parameter between the sample and reaction solution. Thermal behavior by DSC analysis showed that the dehydrofluorination occurred at least in the crystal surfaces as well as in the amorphous chains.

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