Spectroscopic method of determining the proportion of liquid crystalline phase in anisotropic polymer solutions

Polarization IR spectroscopy was used to evaluate the proportion of anisotropic phase for poly- p-benzamide solutions in DMAA using the dichroism of a π-band of a frequency of 803 cm −1. The existence of a liquid crystalline phase is typical of this solution and transition to the isotropic state tak...

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Bibliographic Details
Published in:Polymer science USSR 1976, Vol.18 (4), p.1077-1079
Main Authors: Shabllgin, M.V., Belousova, T.A., Kulichikhin, V.G., Platonov, V.A., Kalmykova, V.D., Papkov, S.P.
Format: Article
Language:English
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Summary:Polarization IR spectroscopy was used to evaluate the proportion of anisotropic phase for poly- p-benzamide solutions in DMAA using the dichroism of a π-band of a frequency of 803 cm −1. The existence of a liquid crystalline phase is typical of this solution and transition to the isotropic state takes place in a relatively narrow concentration range.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(76)90164-7