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Relaxation spectroscopy of LC main chain polymers: Experimental and theoretical investigations
Author(s) -
Borisova Tamara,
Fridrikh Sergey,
Gotlib Yuli,
Medvedev Grigoriy,
Nikonorova Natalja,
Skorokhodov Sergey,
Zuev Vjacheslav
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.19930720107
Subject(s) - thermotropic crystal , mesophase , polymer , relaxation (psychology) , materials science , liquid crystal , dielectric , isotropy , chemical physics , chain (unit) , polymer science , polymer chemistry , liquid crystalline , chemistry , composite material , optics , physics , psychology , social psychology , optoelectronics , astronomy
A series of thermotropic main chain polymers with extended dimethylsiloxane segments was investigated. The study of dielectric properties of polymers revealed the relationship between their ability to form a mesophase and their molecular mobility. The peculiar behaviour of dielectric α‐relaxation parameters during the transition from mesomorphic to isotropic members of this polymeric series was shown. The theoretical approaches were developed for understanding macrochain dynamics of liquid crystalline polymers. The theoretical and experimental results are in good agreement.