Strain-dependent localization, microscopic deformations, and macroscopic normal tensions in model polymer networks
Carsten Svaneborg, Gary S. Grest, Ralf Everaers
Abstract
We use molecular dynamics simulations to investigate the microscopic and macroscopic response of model polymer networks to uniaxial elongations. By studying networks with strands lengths ranging from Ns=20 to 200 we cover the full crossover from cross-link to entanglement dominated behavior. Our results support a recent version of the tube model which accounts for the different strain dependence of chain localization due to chemical cross-links and entanglements.
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