The Flory−Huggins interaction parameter and thermoreversible gelation of poly(vinylidene fluoride) in organic solvents

• Okabe Masaru

  Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology

• Wada Risei

  Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology

• Tazaki Michiko

  Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology

• Homma Terutake

  Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology

書誌事項

タイトル別名

• The Flory-Huggins Interaction Parameter and Thermoreversible Gelation of Poly(vinylidene fluoride) in Organic Solvents
• Flory Huggins Interaction Parameter and Thermoreversible Gelation of Poly vinylidene fluoride in Organic Solvents

抄録

The Flory–Huggins interaction parameter (χ₁₂) between poly(vinylidene fluoride) (PVdF) and organic solvent was estimated experimentally over wide range of temperature by an inverse gas chromatography (IGC) using many kinds of solvents such as alkane, alkene, ketone, lactone, and nitrogen-containing solvent. The thermoreversible gelation of PVdF solution was discussed from the magnitude of interaction parameter χ₁₂ between PVdF and solvent. The parameter χ₁₂ was measured for a concentrated PVdF solution by the usual IGC technique. The parameter χ₁₂ obtained for each PVdF/solvent system increased slowly with decreasing temperature. The present systems were divided broadly into three groups according to the magnitude of χ₁₂ in the vicinity of room temperature, i.e., group (a) with χ₁₂»0.5, group (b) with χ₁₂≈0.5, and group (c) with χ₁₂«0.5. The group (b), to which ketone and lactone belong, converted to thermoreversible gels accompanying with crystallization of polymer. The gelation process of PVdF solution was investigated through measurement of in situ Fourier transform infrared (FT-IR) spectroscopy. The time-resolved FT-IR spectra suggested that the gelation took place taking the conformation T₃GT₃G for the system where the parameter χ₁₂ was nearly equal to 0.5 such as PVdF in γ-butyrolactone. For the system where the parameter χ₁₂ became larger than 0.5 such as PVdF in cyclohexanone, 3-pentanone, 3-hexanone, 3-heptanone, or 3-octanone, the gelation occurred taking the conformation TGTG.

収録刊行物

• Polymer Journal

  Polymer Journal 35 (10), 798-803, 2003

  The Society of Polymer Science, Japan

キーワード

• Thermoreversible Gel
• Poly(vinylidene fluoride)
• Time-Resolved FT-IR
• Flory–Huggins Interaction Parameter
• Inverse Gas Chromatography (IGC)
• Sol–Gel Transition

詳細情報

• CRID: 1390282681267504512
• NII論文ID: 130004430455
• NII論文ID: 10012443719
• NII書誌ID: AA00777013
• DOI: 10.1295/polymj.35.798
• COI: 1:CAS:528:DC%2BD3sXosFGjsLo%3D
• ISSN: 13490540
• ISSN: 00323896
• NDL書誌ID: 6715171
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6715171
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
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