Reliability of Intrinsic Viscosity Estimated by Single Point Procedure at High Concentrations

• Inoue Tadashi

  Department of Macromolecular Science, Graduate School of Science, Osaka University

• Oba Naoto

  Department of Macromolecular Science, Graduate School of Science, Osaka University

• Urakawa Osamu

  Department of Macromolecular Science, Graduate School of Science, Osaka University

抄録

A simple calculation method to evaluate intrinsic viscosity from viscosity data at a finite concentration (i.e. without the extrapolation to zero concentration) is examined to clarify its applicability. The method, [η] = {2(η_sp-lnη_r)}^1/2/c, is based on Huggins and Fuoss-Mead plots. Here, η_sp and η_r are respectively specific viscosity and relative viscosity, and c is concentration. Its applicability was tested with published viscosity data for polystyrene and poly(α-methyl styrene) solutions. The method was found to work well for good solvents in the concentration regime c / c * ≤ 2, where c * is the overlapping concentration. On the other hand, for the case of θ solvents, the applicability of the method was very limited to low concentration of c / c * ＜ 0.4, due to the viscosity enhancement by the entanglements.

収録刊行物

• 日本レオロジー学会誌

  日本レオロジー学会誌 42 (4), 261-264, 2014

  一般社団法人 日本レオロジー学会

キーワード

• Intrinsic viscosity
• Huggins equation
• Polystyrene
• Single-point procedure

詳細情報

• CRID: 1390001205095682816
• NII論文ID: 130004926520
• NII書誌ID: AN00198812
• DOI: 10.1678/rheology.42.261
• ISSN: 21864586
• ISSN: 03871533
• NDL書誌ID: 025811171
• Web Site: http://id.ndl.go.jp/bib/025811171
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025811171
• Web Site: https://www.jstage.jst.go.jp/article/rheology/42/4/42_261/_pdf
• 本文言語コード: ja
• データソース種別:
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