Characteristic time for self-diffusion coefficient of linear polymers in semidilute solutions

Yoshiaki Takahashi, Masayoshi Yamaguchi, Ichiro Noda

Research output: Contribution to journalArticlepeer-review


The concentration dependence of characteristic time (t) for self-diffusion coefficient Ds of linear polymers in good solvents was discussed in comparison with that of the weight average relaxation time tw for viscoelastic properties. Similarities were found for the concentration regions of tr and tw, and also for the concentration dependences of t’s in the respective regions. On the basis of the similarities, it is pointed out that almost all the Ds data of polymers at finite concentrations so far published should not be discussed in terms of the reptation model since the solutions are not regarded as those in the well entangled regions.

Original languageEnglish
Pages (from-to)569
Number of pages1
JournalJournal of Rheology
Issue number3
Publication statusPublished - 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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