Dynamics of Reversible Networks

Ludwik Leibler, Michael Rubinstein, Ralph H. Colby

Research output: Contribution to journalArticle

449 Citations (Scopus)

Abstract

We present a model for dynamics of entangled networks made up of linear chains with many temporary cross-links. At times shorter than the lifetime of a cross-link such networks behave as elastic rubbers (gels). On longer time scales the successive breaking of only a few cross-links allows the chain to diffuse along its confining tube. The motion of a chain in this hindered reptation model is controlled by the concentration and lifetime of tie points. We calculate the self-diffusion coefficient and discuss the stress relaxation in terms of molecular parameters, including the chain length, the number of cross-linking groups per chain, and the lifetime and probability of formation of cross-links. We find good agreement with recent experiments by Stadler et al. on model thermoplastic elastomers.

Original languageEnglish (US)
Pages (from-to)4701-4707
Number of pages7
JournalMacromolecules
Volume24
Issue number16
DOIs
StatePublished - Aug 1 1991

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Thermoplastic elastomers
Rubber
Stress relaxation
Chain length
Gels
Experiments

All Science Journal Classification (ASJC) codes

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

Cite this

Leibler, Ludwik ; Rubinstein, Michael ; Colby, Ralph H. / Dynamics of Reversible Networks. In: Macromolecules. 1991 ; Vol. 24, No. 16. pp. 4701-4707.
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Leibler, L, Rubinstein, M & Colby, RH 1991, 'Dynamics of Reversible Networks', Macromolecules, vol. 24, no. 16, pp. 4701-4707. https://doi.org/10.1021/ma00016a034

Dynamics of Reversible Networks. / Leibler, Ludwik; Rubinstein, Michael; Colby, Ralph H.

In: Macromolecules, Vol. 24, No. 16, 01.08.1991, p. 4701-4707.

Research output: Contribution to journalArticle

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