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?
- Other Titles
- Preparation and Properties of Acrylic Fibers from the Polyacrylonitrile Melt Formed by Hydration(I)?Isothermal Crystallization Behavior of the Hydrated Melt of Polyacrylonitrile?
- Authors
- 민병길; 조원호
- Issue Date
- 2007
- Publisher
- 한국섬유공학회
- Keywords
- polyacrylonitrile; hydration; melting point depression; isothermal crystallization1. IntroductionIt is well known that polyacrylonitrile (PAN)-based polymerscontaining acrylonitrile content higher than 85 % do notproduce stable melt state because of; polyacrylonitrile; hydration; melting point depression; isothermal crystallization1. IntroductionIt is well known that polyacrylonitrile (PAN)-based polymerscontaining acrylonitrile content higher than 85 % do notproduce stable melt state because of
- Citation
- 한국섬유공학회지, v.44, no.2, pp.75 - 79
- Journal Title
- 한국섬유공학회지
- Volume
- 44
- Number
- 2
- Start Page
- 75
- End Page
- 79
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/19259
- ISSN
- 1225-1089
- Abstract
- state were studied. As water was added, the melting point of PAN was depressed sharply to reach a plateau region in which allthe nitrile groups of the polymer were hydrated. The crystallization exotherms of PAN/water mixture showed complex pro-files. On DSC analysis, it was found that the exotherm from the crystallization (dehydration) heat of the hydrated PAN wasoverlapped with the latent heats by the neat PAN and water which was not evolved during quenching. Thus, in order to inves-tigate the dehydration kinetics of PAN/water mixture, it was required to separate the exothermic peak by the isothermal crys-tallization from the peaks by the evolution of latent heats of the each component, i.e., PAN and water. By subtraction of thecrystallization peak of PAN/water mixture was successfully obtained according to various crystallization temperature (Tc).
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