Structural arrest in dense star-polymer solutions

被引：103

作者：

Foffi, G

Sciortino, F

Tartaglia, P

Zaccarelli, E

Lo Verso, F

Reatto, L

Dawson, KA

Likos, CN

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] Univ Roma La Sapienza, INFM, Ctr Stat Mech & Complex, I-00185 Rome, Italy

[3] Univ Milan, Ist Nazl Fis Mat, I-20133 Milan, Italy

[4] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[5] Univ Coll Dublin, Irish Ctr Colloid Sci & Biomat, Dept Chem, Dublin 4, Ireland

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

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.90.238301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamics of star polymers is investigated via extensive molecular and Brownian dynamics simulations for a large range of functionality f and packing fraction eta. The calculated isodiffusivity curves display both minima and maxima as a function of eta and minima as a function of f. Simulation results are compared with theoretical predictions based on different approximations for the structure factor. In particular, the ideal glass transition line predicted by mode-coupling theory is shown to exactly track the isodiffusivity curves, offering a theoretical understanding for the observation of disordered arrested states in star-polymer solutions.

引用

页数：4

共 41 条

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