RESPONSE OF A TERMINALLY ANCHORED POLYMER-CHAIN TO SIMPLE SHEAR-FLOW

被引：32

作者：

PARNAS, RS

COHEN, Y

机构：

[1] UNIV CALIF LOS ANGELES,DEPT CHEM ENGN,LOS ANGELES,CA 90024

[2] NATL INST STAND & TECHNOL,DIV POLYMERS,GAITHERSBURG,MD 20899

来源：

MACROMOLECULES | 1991年 / 24卷 / 16期

关键词：

D O I：

10.1021/ma00016a027

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 behavior of a terminally anchored, freely jointed bead-rod chain subjected to uniform solvent shear flow was investigated via Brownian dynamics simulations. The effects of solvent flow were demonstrated through the dependence of the segment density distributions, components of the radius of gyration, and the attachment force on the solvent shear rate. Additionally, it was found that the effective hydrodynamic thickness was a strong function of the shear rate, in contrast to previous results for bead-spring model chains. Stationary statistical results obtained for the chain extension show two regimes in the configuration space of the model chain, a Brownian regime at low shear rates and a hydrodynamic regime at high shear rates.

引用

页码：4646 / 4656

页数：11

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