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Hydrodynamic, dynamo-optical and conformational characteristics of molecules of phenyl-substituted para-aromatic polyesters

✍ Scribed by V.N. Tsvetkov; S.V. Bushin; L.N. Andreeva; C.P. Smirnov; E.V. Belyaeva; A.Yu. Bilibin; A.R. Stepanova

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 503 KB
Volume: 28
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(92)90242-t

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✦ Synopsis

Al~tract--Hydrodynamic, optical and conformational properties of mono-phenyl-substituted para-aromatic polyester (PAPE) in tetrachloroethane and dichloroacetic acid have been studied by sedimentationdiffusion analysis, viscometry and flow birefringence. The effect of phenyl side-groups on the equilibrium rigidity of PAPE chains was analysed. On the basis of these data, the energies of hindrance to intramolecular rotations about the ester bonds of various phenyl-substituted PAPEs were estimated.

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