Phys. Rev. Lett. 91, 018301 (2003) [4 pages]Monte Carlo Simulation of a Coarse-Grained Model of Polyelectrolyte NetworksReceived 3 December 2002; published 3 July 2003 The structure and properties of a coarse-grained model of a polyelectrolyte network is studied by means of Monte Carlo simulations. Counterions are treated explicitly, and permanent tetrafunctional cross-linking sites are annealed. The resulting pressure-density relationships exhibit a strong dependence on the strength of electrostatic interactions. A discontinuous volume change is observed when electrostatic interactions are strong. The structure of the model networks is examined at various conditions, and it is found to be considerably different from that of noncross-linked polyelectrolytes. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.018301
DOI:
10.1103/PhysRevLett.91.018301
PACS:
82.35.Rs, 61.41.+e, 64.10.+h, 64.75.+g
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