Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Crystal Structure and Dynamic Mechanical Properties of Zone Drawn Poly(Vinylidene Fluoride)

Zone 연신된 폴리비닐리덴 플루오라이드의 결정구조와 점탄성적 성질

  • 조재환 (전남대학교 공과대학 섬유공학과) ;
  • 지병철 (서울대학교 공과대학 섬유공학과, 서울대학교 공과대학 섬유공학과) ;
  • 김상용
  • Published : 1985.12.01

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Abstract

Zone drawing of PVDF of Form II crystal was carried out by changing the zone drawing temperature and stress. Form I crystal of PVDF was obtained by this method and was confirmed by IR spectroscoty and X-ray diffraction. Form I and II crystals were transformed to Form II and III crystals, respectively, after they were annealed at the temperatures above 160$^{\circ}C$, but were not transformed at the temperatures below 160$^{\circ}C$. Tan$\delta$ and complex modulus were decreased by stretching the specimens at very high stresses.

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