Pulling a Polymeric Chain through Tiny Grommets
ORAL
Abstract
In this model, the N beads of mass m are connected in a chain by entropy springs. The friction of the chain is described by a viscous-force for energy dissipation. The interaction of the chain with the grommets is represented by a narrow Gaussian potential. The equations of motion for this model are Langevin type. It is shown that in this model the chain displays oscillated motions under a constant pulling condition. This stick-slip dynamics in a polymer system has not been discussed previously, but may really exist in some systems such as polymer nano-composites and polymer-entangled fluids.
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