高分子レオロジーのこし書き

• 尾崎 邦宏

  京都大学化学研究所

書誌事項

タイトル別名

• A Note on Rheology of Polymeric Systems.
• コウブンシ レオロジーノ コシガキ

抄録

Some of the "well-known" features in polymer rheology are inconsistent with recent data. (1) Complex modulus of non-entangled polymer solutions cannot be described with the Rouse-Zimm equation with any choice of parameters. An extra term with a single relaxation time removes the discrepancy and also accounts for shear thinning behavior in steady flow. (2) Values of the longest Rouse relaxation time, τ_R, derived from viscosity are much higher than those from dynamic modulus at high frequencies, which are consistent with retraction rate of extended chain estimated from stress overshoot. (3) Entanglement molecular weight, M_e, evaluated from entanglement modulus for solutions in Θ solvent is equal to that in good solvent. M_e values derived from viscosity-molecular weight relation vary with solvent quality. Parameters such as M _e and τ_R from viscosity should be used with care; evaluation method is based on behavior of non-entangled systems, which may not represent behavior of entangled systems.

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 30 (4), 165-172, 2002

  一般社団法人 日本レオロジー学会

キーワード

• Nonlinear viscoelasticity
• Polymer rheology
• Rouse model
• Entanglement
• Tube model

詳細情報

• CRID: 1390001205093630720
• NII論文ID: 10029814338
• NII書誌ID: AN00198812
• DOI: 10.1678/rheology.30.165
• COI: 1:CAS:528:DC%2BD38Xptlehsrs%3D
• ISSN: 21864586
• ISSN: 03871533
• NDL書誌ID: 6304009
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6304009
• Web Site: http://www.jstage.jst.go.jp/article/rheology/30/4/30_4_165/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可