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Issue 46, 2012
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Length dependence of crosslinker induced network formation of rods: a Monte Carlo study

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Abstract

Self-assembling filament networks are of great relevance for the development of novel materials. They show interesting mechanical properties and have exceptionally large internal surface areas. We analyzed the percolation behavior of a self-assembling network of rigid filaments and crosslinkers with the help of Monte Carlo simulations. In the system, filaments are represented by long spherocylinders, while crosslinkers are mimicked by short spherocylinders with adhesive sites at both ends with which the crosslinkers can bind to the filaments. We had analyzed the dependence of the network structure on the filament volume fraction, the crosslinker–filament ratio, and the adhesion strength in a former article (Soft Matter, 2009, 5, 1504). In this work, we study the influence of the filament length on the percolation threshold, finding that, for a given filament volume fraction and crosslinker filament ratio, the percolation transition is rather independent of the filament length. We introduce an analytic approach, which reproduces the binding probability qualitatively.

Graphical abstract: Length dependence of crosslinker induced network formation of rods: a Monte Carlo study

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Article information


Submitted
14 Dec 2011
Accepted
06 Sep 2012
First published
28 Sep 2012

Soft Matter, 2012,8, 11746-11754
Article type
Paper

Length dependence of crosslinker induced network formation of rods: a Monte Carlo study

R. Chelakkot and T. Gruhn, Soft Matter, 2012, 8, 11746 DOI: 10.1039/C2SM07379J

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