Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Effect of Annealing Conditions on Molecular Structure and Physical Properties of Polypropylene Slit-Film Yarns

열처리 조건이 폴리프로필렌 필름사의 구조와 물성에 미치는 영향

  • Seo, Young Ho (Department of Nano, Medical and Polymer Materials, Yeungnam University) ;
  • Han, Sung Soo (Department of Nano, Medical and Polymer Materials, Yeungnam University) ;
  • Oh, Tae Hwan (Department of Nano, Medical and Polymer Materials, Yeungnam University) ;
  • Kim, Sang Woon (Korea E&T Co. Ltd.)
  • 서영호 (영남대학교 나노메디컬유기재료공학과) ;
  • 한성수 (영남대학교 나노메디컬유기재료공학과) ;
  • 오태환 (영남대학교 나노메디컬유기재료공학과) ;
  • 김상운 ((주)한국이엔티)
  • Received : 2013.04.16
  • Accepted : 2013.06.05
  • Published : 2013.06.30
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Abstract

The effects of various annealing temperatures and durations on the structure and physical properties of polypropylene (PP) slit-film yarns were investigated. Annealing led to a more developed crystal structure, even when the yarns were drawn before heat treatment. Annealing at $140^{\circ}C$ led to better developed crystal structures than that at $100^{\circ}C$. Annealing primarily affected the crystalline structure, whereas little change was observed in the molecular orientation of the yarns. The slitfilm yarns annealed at $140^{\circ}C$ showed less than 1% shrinkage. A very low-shrinkage slit-film yarn was obtained on annealing for 10 min at $140^{\circ}C$ or 20 min at $100^{\circ}C$.

Keywords

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