Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Studies on Molecular Structure Changes in Polyethylene/Polypropylene Sheath-Core Monofilament

시스-코어 복합방사 폴리에틸렌/폴리프로필렌 모노필라멘트 분자 구조 변화에 관한 연구

  • 서영호 (영남대학교 나노메디컬유기재료공학과) ;
  • 임영민 (영남대학교 나노메디컬유기재료공학과) ;
  • 오태환 (영남대학교 나노메디컬유기재료공학과) ;
  • 한성수 (영남대학교 나노메디컬유기재료공학과) ;
  • 남영식 ((주)구스텍) ;
  • 남승민 ((주)휴비스) ;
  • 함진수 ((주)휴비스)
  • Received : 2014.01.17
  • Accepted : 2014.03.18
  • Published : 2014.04.30
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Abstract

In this study, changes in the molecular structure of a sheath-core polyethylene (PE)/polypropylene (PP) bicomponent monofilament were investigated using different fractions of sheath or core components. The melt complex viscosity of sheath PE showed a greater shear thinning behavior than core PP. For both as-spun and drawn filaments, the crystal structure of sheath PE developed better than that of core PP. In the as-spun monofilament, the core PP crystal structure did not develop well, while sheath PE showed a more developed crystal structure. Further, sonic velocity indicating the molecular orientation increased upon drawing but was rarely dependent on the sheath PE fraction for both as-spun and drawn monofilaments.

Keywords

References

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