Simulational study of anomalous tracer diffusion in hydrogels

Details Simulational study of anomalous tracer diffusion in hydrogels Simulational study of anomalous tracer diffusion in hydrogels

2010-12-07

arxiv.org/abs/1012.1510v3

Colloid & Polymer Science, Online First, 9 March 2011

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 11 figures

Scientific paper

10.1007/s00396-011-2393-0

In this article, we analyze different factors that affect the diffusion behavior of small tracer particles (as they are used e.g.in fluorescence correlation spectroscopy (FCS)) in the polymer network of a hydrogel and perform simulations of various simplified models. We observe, that under certain circumstances the attraction of a tracer particle to the polymer network strands might cause subdiffusive behavior on intermediate time scales. In theory, this behavior could be employed to examine the network structure and swelling behavior of weakly crosslinked hydrogels with the help of FCS.

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