Thermodynamic limitations of the reptation model

被引：5

作者：

Fatkullin, Nail ^{[1
]}

Kimmich, Rainer

机构：

[1] Kazan VI Lenin State Univ, Dept Phys, Kazan 420008, Russia

[2] Univ Ulm, Sekt Kernresonanzspektroskopie, D-89069 Ulm, Germany

来源：

MACROMOLECULAR SYMPOSIA | 2006年 / 237卷

关键词：

chain dynamics; fluctuations; polymer melts; reptation; thermodynamics;

D O I：

10.1002/masy.200650508

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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 greater than or similar to tau(R), where tau(R) is the Rouse relaxation time.

引用

页码：69 / 72

页数：4

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