Predicting the tube diameter in melts and solutions

Research output: Contribution to journalArticle

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Abstract

A simple conjecture relating chain dimensions to the "tube diameter", which represents the topological confining effect of entanglements on a chain, works well for all flexible entangled polymer melts. I extend this conjecture to semidilute solutions: first for ⊖ solvents, where it is shown to be equivalent to the Colby-Rubinstein scaling picture, and then for good solvents. In the latter case, it turns out that the number of "blobs" per entanglement strand B is not a constant as had been previously assumed, but depends on the ratio of the packing length to the swelling length. This unified picture is consistent with existing data on semidilute solutions.

Original languageEnglish (US)
Pages (from-to)4929-4939
Number of pages11
JournalMacromolecules
Volume38
Issue number11
DOIs
StatePublished - May 31 2005

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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