DIFFUSION AND BROWNIAN MOTION OF POLYMERIC LIQUIDS.

Abstract

The dynamics of dense model systems of pearl-necklace polymer chains, consisting of up to N equals 98 hard spheres each have been investigated using Monte Carlo methods. Excluded volume conditions as well as entanglement constraints have been taken into account. The time-dependent displacement of a single monomer on the chain follows the classic Rouse equation until the monomer equilibrates, whereas the diffusion constant for the center-of-mass motion is in agreement with the reptation law.