Properties of solutions of the copolymer of acrylonitrile with vinylimidazole and fabrication of a fibre from it

When chemically active vinylimidazole is incorporated in the macromolecular polyacrylonitrile chain, an anomalous deviation of the viscosity from Newtonian flow is observed with an increase in the shear rate, caused by a change in the inter- and intramolecular interaction in the copolymer. Addition...

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Bibliographic Details
Published in:Fibre chemistry 1997-01, Vol.29 (1), p.13-16
Main Authors: Kalyanova, N. F., Barash, A. N., Zverev, M. P.
Format: Article
Language:English
Subjects:
Acrylonitriles
Copolymers
Deviation
Fibre
Oligomers
Polyacrylonitriles
Shear rate
Solvents
Viscosity
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Summary:When chemically active vinylimidazole is incorporated in the macromolecular polyacrylonitrile chain, an anomalous deviation of the viscosity from Newtonian flow is observed with an increase in the shear rate, caused by a change in the inter- and intramolecular interaction in the copolymer. Addition of up to 70 wt. % solvent in the plasticizing bath probably causes relaxation processes and the creation of a more compact structure, which allows for obtaining a fibre with satisfactory physicomechanical properties. Use of ED-20 epoxy--bisphenol A oligomer as the reagent for creating a three-dimensional chemical network in the copolymer is suggested.[PUBLICATION ABSTRACT]
ISSN:0015-0541
1573-8493
DOI:10.1007/BF02430679