Journal of the Korean Society of Clothing and Textiles (한국의류학회지)

The Korean Society of Clothing and Textiles (한국의류학회)
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The Changes of the Microstructure and the Physical Properties of Heat Set PET Partially Oriented Yarns

PET부분배향사(POY)의 열처리에 따른 내부구조 및 물성변화

  • Choi Jong Myoung (Dept. of Clothing and Textiles, College of Home Economics, Yonsei University) ;
  • Cho Gil Soo (Dept. of Clothing and Textiles, College of Home Economics, Yonsei University)
  • 최종명 (연세대학교 가정대학 의생활학과) ;
  • 조길수 (연세대학교 가정대학 의생활학과)
  • Published : 1988.11.01
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Abstract

This study was carried out to investigate the microstructure and physical property of PET POY which was taut-annealed under various conditions. The DSC melting curves of annealed PET POY showed double melting peaks in most cases. As temperature and time increased, form II crystal became sharp and increased in size, and form I crystal decreased in size. The slower the heating rate, the higher the programmed heating effect during DSC analysis. Crystallinity and briefringence of annealed specimens increased as the treatment temperature and time increased. Breaking tenacity of specimens treated for 3 minutes increased as the treatment temperature increased, but others decreased. Elongation at break decreased as the annealing temperature and time increased. Dye uptake of annealed specimens decreased as the temperature increased up to $190^{\circ}C\~210^{\circ}C$. then the uptakes increased at higher temperatures. At the same temperature, dye uptake of the specimen decreased as time increased.

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