On compatibility of the Cox-Merz rule with the model of Doi and Edwards

被引：193

作者：

Ianniruberto, G ^{[1
]}

Marrucci, G ^{[1
]}

机构：

[1] UNIV NAPLES FEDERICO II,DEPT CHEM ENGN,I-80125 NAPLES,ITALY

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 1996年 / 65卷 / 2-3期

关键词：

constitutive equation; Cox-Merz rule; entanglement convection; tube model;

D O I：

10.1016/0377-0257(96)01433-4

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A recently suggested relaxation mechanism which is expected to be dominant in fast flows of polymer melts is combined here with the tube model of Doi and Edwards, and the corresponding constitutive equation is derived. The mechanism consists of the renewal of topology by convective displacement of entanglements. Detailed predictions for the flow curve in steady shear are obtained in order to test the agreement with the Cox-Merz rule. With respect to the basic tube model, significant progress is achieved.

引用

页码：241 / 246

页数：6

共 5 条

[1] CORRELATION OF DYNAMIC AND STEADY FLOW VISCOSITIES [J].