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RESEARCH PRODUCT
Dynamics of Polymer Chains Confined in Slit-Like Pores
Kurt BinderAndrey Milchevsubject
PhysicsPhysics and Astronomy (miscellaneous)Monte Carlo methodRelaxation (NMR)General EngineeringRadiusSpring (mathematics)Fick's laws of diffusionGyrationMolecular physicsAtomic and Molecular Physics and OpticsMolecular dynamicsExcluded volumeStatistical physicsdescription
Monte Carlo simulations of an off-lattice bead spring model of polymer chains are presented, confining the chains between two repulsive parallel planes a distance D apart. Varying the chain length N from N = 16 to N = 128, we show that under good solvent conditions the chains behave like two-dimensional self-avoiding walks, their mean square gyration radius scales as (R g 2 ) N 2v with v = 3/4. The density profile across the slit is independent of N and maximal in the center of the slit. The dynamical properties of the chains are found to be in full agreement with the Rouse model with excluded volume in d = 2 dimensions, the relaxation times vary like τ N Z with z = 2v +1 = 5/2, the diffusion constant still being given by D N 1/N. The dynamical behavior of various mean square displacements is analyzed in detail.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-01-01 | Journal de Physique II |