A thermodynamically admissible reptation model for fast flows of entangled polymers

摘要: The primary purpose of this paper is to introduce the effect chain stretching into a previously developed, thermodynamically admissible reptation model incorporating anisotropic tube cross sections, double reptation, and convective constraint release, while avoiding independent alignment approximation. A second goal detailed illustration thermodynamic modeling approach. Two versions with different mechanisms are proposed, simpler one sheds new light on models without alignment. stochastic reformulation model, its simulation, linear viscoelastic properties, predictions for rapid double-step shear strains, parameters discussed in detail.