한국섬유공학회지 (Textile Science and Engineering)

  • 제44권2호
  • /
  • Pages.75-79
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  • 2007
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  • 1225-1089(pISSN)
  • /
  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

수화용융체를 이용한 아크릴섬유의 제조와 특성에 관한 연구(I) -폴리아크릴로니트릴 수화용융체의 등온결정화 거동-

Preparation and Properties of Acrylic Fibers from the Polyacrylonitrile Melt Formed by Hydration(I) -Isothermal Crystallization Behavior of the Hydrated Melt of Polyacrylonitrile-

  • 민병길 (금오공과대학교 신소재시스템공학부) ;
  • 조원호 (서울대학교 재료공학부)
  • Min, Byung-Gil (School of Advanced Materials and System Engineering, Kumoh National Institute of Technology) ;
  • Jo, Won-Ho (School of Materials Science and Engineering, Seoul National University)
  • 발행 : 2007.04.30
⟨ 이전 논문 다음 논문 ⟩

초록

Melting and isothermal crystallization behaviors of plasticized polyacrylonitrile (PAN) on adding water in a sealed state were studied. As water was added, the melting point of PAN was depressed sharply to reach a plateau region in which all the nitrile groups of the polymer were hydrated. The crystallization exotherms of PAN/water mixture showed complex profiles. On DSC analysis, it was found that the exotherm from the crystallization (dehydration) heat of the hydrated PAN was overlapped with the latent heats by the neat PAN and water which was not evolved during quenching. Thus, in order to investigate the dehydration kinetics of PAN/water mixture, it was required to separate the exothermic peak by the isothermal crystallization from the peaks by the evolution of latent heats of the each component, i.e., PAN and water. By subtraction of the latent heat contributed by neat PAN and water from the all isothermal exothermic heat of PAN/water mixture, the isothermal crystallization peak of PAN/water mixture was successfully obtained according to various crystallization temperature ($T_c$).

키워드

참고문헌

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