Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Effects of the Swelling of Polyacrylonitrile Films in Various Aqueous Solutions on Their Reaction with Hydrazine

여러 가지 수용액에서의 폴리아크릴로니트릴 필름의 팽윤이 히드라진과의 반응에 미치는 영향

  • Park, Heung Su (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Kim, Young Ho (Department of Organic Materials and Fiber Engineering, Soongsil University)
  • 박흥수 (숭실대학교 유기신소재.파이버공학과) ;
  • 김영호 (숭실대학교 유기신소재.파이버공학과)
  • Received : 2014.07.01
  • Accepted : 2014.07.30
  • Published : 2014.08.31
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Abstract

Swelling behaviors of polyacrylonitrile (PAN) films in various aqueous solutions, such as N,N'-dimethylformamide (DMF)/water, N,N'-dimethylacetamide (DMAc)/water, dimethylsulfoxide (DMSO)/water, NaSCN or KSCN solution, the effects of the concentrations of these solutions, and the effects of swelling temperature and time on the degree of swelling of PAN films were analyzed. Among the various aqueous solutions, DMF and NaSCN solution were found to be effective for high swelling of PAN films. High swelling of PAN films in the hydrazine solutions wherein aqueous, organic solvents or salt solutions were used as solvents for hydrazine, resulted in higher absorption of hydrazine and a high degree of cross-linking. Analysis of the bands of FT-IR spectra and the cyclization peaks of DSC curves for various hydrazine-treated PAN films showed that the effective cross-linking of PAN films at the same hydrazine concentration was obtained by using DMF/water or NaSCN/water solutions as solvents for hydrazine and treating medium for PAN films.

Keywords

References

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