Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Analysis of Isothermal Crystallization Behavior of PTT/PTN Blends Using a Polarizing Microscope

편광현미경을 이용한 PTT/PTN 블렌드의 등온결정화 거동 분석

  • Choi, Jae-Won (Sports Leisure Textile Research Center, Inha University) ;
  • Cha, Hee-Cheol (Digital Dyeing Technology Team, Korea Institute of Industrial Technology) ;
  • Kim, Young-Ho (Department of Textile Engineering, Soongsil University)
  • 최재원 (인하대학교 스포츠레저섬유연구센터) ;
  • 차희철 (한국생산기술연구원 디지털염색팀) ;
  • 김영호 (숭실대학교 공과대학 섬유공학과)
  • Published : 2005.12.01
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Abstract

Isothermal crystallization behaviors of poly(trimethylene terephthalate) (PTT), poly(trimethylene naphthalate) (PTN), and PTT/PTN blends were analyzed using a polarizing microscope equipped with a hot-stage. As the melting time at $260^{\circ}C$ of PTT/PTN blends increased, the crystallization proceeded slowly due to the copolymer formation which resulted from the ester interchange reaction at the elevated temperature. PTT and m-rich blends formed spherulites over the temperature range of experiment, but PTN formed spherulites only at lower crystallization temperatures such as $150^{\circ}C$. PTN and PTN-rich blends formed distorted spherulites at high temperatures such as $180^{\circ}C$, which seemed to result from the $\beta-crystal$ formation of PTN at that temperature. The radial growth rate of the spherulite formed during the crystallization was obtained by the measurement of radii of the spherulites. The radial growth rate decreased as PTN content in the blends increased.

Keywords

References

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