Three structural modifications of poly-p-phenylene-1,3,4-oxadiazole have been found: a POD-H2SO4 crystal-solvate of equimolar composition, and the β- and α-forms.
Conditions have been described for obtaining the variations structural modifications of POD under all regimes of fibre spinning.
An interconnection between structure and deformation properties of spun, model, and finished POD fibres has been established.
The authors express their thanks to Professor E. P. Krasnov for useful advice given in discussion of this article.
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Translated from Khimicheskie Volokna, No. 3, pp. 32–35, May–June, 1986.
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Mil'kova, L.P., Romanov, V.V., Pozhalkin, N.S. et al. Structural transformations of poly-p-phenylene-1,3,4-oxadiazole during the process of fibre preparation. Fibre Chem 18, 202–206 (1987). https://doi.org/10.1007/BF00553299
- Structural Modification
- Structural Transformation
- Deformation Property