Effective interactions between star polymers and colloidal particles

被引：86

作者：

Jusufi, A ^{[1
]}

Dzubiella, J ^{[1
]}

Likos, CN ^{[1
]}

von Ferber, C ^{[1
]}

Löwen, H ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2001年 / 13卷 / 28期

关键词：

D O I：

10.1088/0953-8984/13/28/303

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Using monomer-resolved molecular dynamics simulations and theoretical arguments based on the radial dependence of the osmotic pressure in the interior of a star, we systematically investigate the effective interactions between hard, colloidal particles and star polymers in a good solvent. The relevant parameters are the size ratio q between the stars and the colloids, as well as the number of polymeric arms f (functionality) attached to the common centre of the star. By covering a wide range of q's ranging from zero (star against a flat wall) up to about 0.75, we establish analytical forms for the star-colloid interaction which are in excellent agreement with simulation results. A modified expression for the star-star interaction for low functionalities, f less than or similar to 10 is also introduced.

引用

页码：6177 / 6194

页数：18

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