Longest Relaxation Times of Linear Polymers in Concentration Regions between the Critical Concentrations for Zero-Shear Viscosity and for Steady-State Compliance

Yoshiaki Takahashi, Michio Wakutsu, Ichiro Noda

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)

抄録

The longest relaxation times rm of linear polymers in concentration regions between the critical concentrations for the zero-shear viscosity η° and for the steady-state compliance Je, that is, in a semidilute region for η° and in a dilute (not entangled) region for Je, were studied by measuring the stress relaxation after cessation of steady shear flow. It is concluded that the weight-average relaxation time ϊw (= η° Je) is well represented by rm and the magnitudes of the contribution of the terminal relaxation processes to η° are the same in semidilute solutions for η°, whether the entanglements are effective to Je or not.

本文言語英語
ページ(範囲)242-245
ページ数4
ジャーナルMacromolecules
23
1
DOI
出版ステータス出版済み - 1月 1 1990
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

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