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Theory of relaxation spectra of polymer networks with interchain friction and long‐range hydrodynamic interactions
Author(s) -
Gotlib Yuli YA.
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991460112
Subject(s) - relaxation (psychology) , compressibility , spectral line , range (aeronautics) , motion (physics) , materials science , physics , symmetry (geometry) , mechanics , classical mechanics , mathematics , composite material , quantum mechanics , geometry , psychology , social psychology
The dynamic network model taken into account the friction relative to incompressible effective viscous medium (EVM), the hydrodynamic interactions of a network with the EVM, and the interchain friction is considered. Two collective network relaxation spectra (RS) arise. The first RS corresponds to the network motion relative to immobile EVM, the EVM does not take part in this motion. The second RS includes the combined viscous motion of the network and EVM because of long‐range hydrodynamic interactions. This RS is finite and narrow for infinitely large network. The symmetry of this motion is in concordance with that of incompressible EVM. The existence of interchain friction leads to the narrowing of both types of relaxation spectra.