Elastic critical behavior in a three-dimensional model for polymer gels.
The elastic response in polymeric gels is studied by means of a percolation dynamic model. By numerical simulations the fluctuations in the gyration radius and in the center-of-mass motion of the percolating cluster are determined. Their scaling behavior at the gelation threshold gives a critical exponent for the elastic modulus f approximately 2.5+/-0.1 in agreement with the prediction f=dnu.
Del Gado
Emanuela
E
Dipartimento di Scienze Fisiche, Università di Napoli "Federico II," Complesso Universitario di Monte Sant'Angelo, via Cintia 80126 Napoli, Italy.
De Arcangelis
Lucilla
L
Coniglio
Antonio
A