Screening of hydrodynamic interactions in semidilute polymer solutions:: A computer simulation study -: art. no. 040501

被引：85

作者：

Ahlrichs, P ^{[1
]}

Everaers, R ^{[1
]}

Dünweg, B ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, D-55021 Mainz, Germany

来源：

PHYSICAL REVIEW E | 2001年 / 64卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.64.040501

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We study single-chain motion in semidilute solutions of polymers of length N = 1000 with excluded-volume and hydrodynamic interactions by a novel algorithm. The crossover length of the transition from Zimm (short lengths and times) to Rouse dynamics (larger scales) is proportional to the static screening length. The crossover time is the corresponding Zimm time. Our data indicate Zimm behavior at large lengths but short times. There is no hydrodynamic screening until the chains feel constraints, after which they resist the flow: "Incomplete screening" occurs in the time domain.

引用

页码：4 / 405014

页数：4

共 30 条

[1] Simulation of a single polymer chain in solution by combining lattice Boltzmann and molecular dynamics [J].