Influence of dispersion procedure on rheological properties of aqueous solutions of high molecular weight PEO

被引：29

作者：

Bossard, Frederic ^{[1
]}

El Kissi, Nadia ^{[1
]}

D'Aprea, Alessandra ^{[1
]}

Alloin, Fannie ^{[2
]}

Sanchez, Jean-Yves ^{[2
]}

Dufresne, Alain ^{[3
]}

机构：

[1] Univ Grenoble 1, Grenoble Inst Natl Polytech, Lab Rheol, UMR 5520, F-38041 Grenoble, France

[2] Univ Grenoble 1, CNRS, Grenoble Inst Natl Polytech, LEPMI,UMR 5631, F-38402 St Martin Dheres, France

[3] PAGORA Grenoble Inst Natl Polytech, Ecole Int Papier Commun Imprimee & Biomat, F-38041 Grenoble, France

来源：

RHEOLOGICA ACTA | 2010年 / 49卷 / 05期

关键词：

Poly(ethylene oxide); Chain scission; Aggregation; Molecular weight; Linear viscoelasticity; POLY(ETHYLENE OXIDE) SOLUTIONS; POLYETHYLENE OXIDE; ULTRASONIC DEGRADATION; SURFACE-TENSION; CHAIN SCISSION; WATER; DEPENDENCE; KINETICS; FLOW; MACROMOLECULES;

D O I：

10.1007/s00397-009-0402-8

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The linear and nonlinear viscoelastic behaviors of poly(ethylene oxide) (PEO) in aqueous media have been investigated as a function of concentration and molecular weight. A particular interest has been paid to study the effect of turbulent flow under stirring, inducing both shear and elongational stresses, on the rheological behavior of the polymer solutions. The comparison of intrinsic viscosity and viscoelastic properties between shaken and stirred PEO solutions is discussed at the molecular scale in terms of chain scission and aggregation. Results point out that the effect of the mechanical history on the rheological response of PEO solutions depends also on the concentration regime and molecular weight. Indeed, the influence of the dispersion procedure vanishes by decreasing both the concentration and the molecular weight.

引用

页码：529 / 540

页数：12

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