Elongational Viscosities of Entangled Linear Polymers

DOI Web Site Web Site 参考文献16件
  • Koga Jiro
    Division of Materials Science, Graduate School of Science and Engineering, Saitama University
  • Shindo Masanori
    Division of Materials Science, Graduate School of Science and Engineering, Saitama University
  • Homma Shunji
    Division of Materials Science, Graduate School of Science and Engineering, Saitama University

この論文をさがす

抄録

Elongation studies are very important for validating the constitutive equations that describe the rheological behavior of fluids. The relaxation of a stretched polymer chain in the flow field has not been investigated in detail thus far. We extended the constitutive equations for predicting the start-up behavior and the power law relationship between the steady-state elongational viscosities and the strain rate. We also determined the steady-state elongational viscosity by fitting the calculated results with the measured values. The calculated results show the power law relationship between the steady-state elongational viscosities and the strain rate. Furthermore, we used these constitutive equations to predict the overshoot of the viscosities and stresses at initial stages of the steady elongational or shear flows by considering only one parameter, the stretch relaxation time.

収録刊行物

参考文献 (16)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ