Triplet interactions in star polymer solutions

被引：54

作者：

von Ferber, C ^{[1
]}

Jusufi, A ^{[1
]}

Likos, CN ^{[1
]}

Löwen, H ^{[1
]}

Watzlawek, M ^{[1
]}

机构：

[1] Univ Dusseldorf, Inst Theoret Phys 2, D-40225 Dusseldorf, Germany

来源：

EUROPEAN PHYSICAL JOURNAL E | 2000年 / 2卷 / 04期

关键词：

D O I：

10.1007/s101890050013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We analyze the effective triplet interactions between the centers of star polymers in a good solvent. Using an analytical short-distance expansion inspired by scaling theory, we deduce that the triplet part of the three-star force is attractive but only 11% of the pairwise part even for a close approach of three star polymers. We have also performed extensive computer simulations for different arm numbers f to extract the effective triplet force. The simulation data show good correspondence with the theoretical predictions. Our results justify the effective pair potential picture even beyond the star polymer overlap concentration.

引用

页码：311 / 318

页数：8

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