Networks 90: Polymer Networks Group Meeting (10th) and IUPAC InternationalSymposium on Polymer Networks (10th) Held in Jerusalem on 20-25 May 1990. Programme and Abstracts

摘要

As an alternative to using statistical mechanical calculation of the free energyof a network, one may go directly to the dynamics of the molecules and derive the dynamical constitutive equation. This has several advantages. (1) There does not need to be separation of microscopic and macroscopic behaviour i.e. one can avoid the calculation of a free energy and the subsequent assumption that this free energy can be employed in Navier's equations. In polymer problems this separation is not valid. (2) Transport coefficients have a structure for networks, and this cannot be obtained from static statistical mechanics. (3) The permanent constraints of the network invalidate conventional Gibbs formula and need difficult generalizations such as the replica method. A dynamical approach avoids this. Keywords: Polymers. (jes)