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Dynamo-optical and conformational properties of poly(biphenylsulfoneterephthalamide) in concentrated sulfuric acid

✍ Scribed by Tatjana V. Filippova; Irina N. Shtennikova; Peter N. Lavrenko

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 641 KB
Volume: 198
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.1997.021980613

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✦ Synopsis

Abstract

Optical and hydrodynamic properties of poly(biphenylsulfoneterephthalamide) (PPhSTPhA) (systematic IUPAC name: poly(iminoterephthaloylimino‐2,2′‐sulfonylbiphenyl‐4,4′‐diyl)) in sulfuric acid were investigated by means of flow birefringence and viscometry. Analysis of experimental molecular weight dependence on the shear optical coefficient made it possible to determine optical anisotropy of a monomer segment and a monomeric unit and the rigidity of the macromolecules. It was established that the molecules of this heterocyclic polyamide have the conformation of a kinetically rigid coil.

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