Structural arrest in dense star polymer solutions

Details Structural arrest in dense star polymer solutions Structural arrest in dense star polymer solutions

2003-05-23

arxiv.org/abs/cond-mat/0305561v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, Revtex, to be published in PRL

Scientific paper

10.1103/PhysRevLett.90.238301

The dynamics of star polymers has been 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.

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