Abstract
Finitely extensible nonlinear elastic (FENE) bead-spring chain model for dilute solutions of branched polymer molecules in a Newtonian solvent is employed to describe the bead-bead interaction within a molecule. Brownian dynamics simulation is used to capture the steady state and transient rheological behavior of branched polymer in extensional flow. The simulations include examination of the effects of viscosity depending on length of the branching chain, spring parameter, and extensional rate. The flow situations and the rheological material functions are investigated. A large difference on the rheological response to different finite extensibility length is observed in this study.
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