한국섬유공학회지 (Textile Science and Engineering)

  • 제44권5호
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  • Pages.252-256
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  • 2007
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

고분자량 폴리비닐알코올 용액의 겔화 특성

Gelation Characteristics of High Molecular Weight Poly(vinyl alcohol) Solution

  • 여정섭 (영남대학교 섬유패션학부) ;
  • 김기정 (영남대학교 섬유패션학부) ;
  • 류원석 (영남대학교 섬유패션학부) ;
  • 오영세 (㈜코오롱 중앙기술원) ;
  • 김준호 (영남대학교 섬유패션학부)
  • 발행 : 2007.10.30
⟨ 이전 논문 다음 논문 ⟩

초록

The gelation behaviors of high molecular weight poly(vinyl alcohol)(PVA) solutions were investigated by the measurements of the rate of phase separation and the rate of gelation. PVA solutions were prepared with dimethyl sulfoxide(DMSO)/water mixed solvents in various compositions. Gelation time was gradually shortened with increasing DMSO content in the mixed solvent up to 60%(vol.). Also, the gelation was faster for higher molecular weight PVA due to easier network formation with higher degree of polymerization. Gels of PVA solutions formed at $0^{\circ}C$ showed high transparency with the exception of DMSO/water(v/v)=0/100, 90/10, 100/0 solutions. Particularly, the gel formed in the mixed solvent of DMSO/water(v/v)=80/20 still maintained its transparency after 20,000 min. This means that the most stable PVA gel can be made with the mixed solvent of DMSO/water(v/v)=80/20.

키워드

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