Thermodynamic Limitations of the Reptation Model | Zendy

Fatkullin Nail | Zendy; Kimmich Rainer | Zendy

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Thermodynamic Limitations of the Reptation Model

Author(s) -

Fatkullin Nail,

Kimmich Rainer

Publication year - 2006

Publication title -

macromolecular symposia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.257

H-Index - 76

eISSN - 1521-3900

pISSN - 1022-1360

DOI - 10.1002/masy.200650508

Subject(s) - reptation , thermodynamics , statistical physics , compressibility , isothermal process , tube (container) , physics , polymer , materials science , nuclear magnetic resonance , composite material

Summary: The paper deals with the question whether the tube/reptation model of polymer chain dynamics is compatible with general laws of statistical physics. Based on a relation between the mean squared fluctuation of the number of segments in a given volume element and the isothermal compressibility of the polymer system, it follows straightforwardly that the tube/reptation model predicts fluctuations larger than permitted by thermodynamics on the time scale t ≳ τ R , where τ R is the Rouse relaxation time.

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