Premium
Model theory of relaxation properties of macromolecules in the nematic LC state
Author(s) -
Gotlib Yuli,
Medvedev Grigori,
Fridrikh Sergei
Publication year - 1993
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19930650118
Subject(s) - macromolecule , liquid crystal , relaxation (psychology) , polymer , chemical physics , transversal (combinatorics) , materials science , dynamic relaxation , lattice (music) , chain (unit) , statistical physics , chemistry , physics , mathematics , psychology , social psychology , mathematical analysis , biochemistry , quantum mechanics , acoustics , composite material , astronomy , optoelectronics
The continuous and lattice dynamic models of the macromolecules in the LC state are considered. The relaxation properties of polymer chain in the nematic LC state may depend on both the variation of the conformation in the ordered state and on the activation barrier of the molecular field. The calculation and comparison of the longitudinal and transversal relaxation spectra for the continuous and discrete rotameric mechanism of the mobility are performed. For the simplest model of the heterogeneous polymer chain for continuous dynamic models the complicated relaxational behavior with two longitudinal and two transversal branches is manifested. The dynamic properties of the lattice dynamic model with spacer consisting of several bonds are considered.