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Dry-spinning fibres from solutions of polymers in high-boiling solvents

  • Chemistry And Technology Of Synthetic Fibres
  • Published:
Fibre Chemistry Aims and scope

Conclusion

Dry spinning from polymer solutions in high-boiling solvents is used extensively for the production of polyacylonitrile, polyurethan, and thermostable fibres of various classes. The method possesses important economic advantages over wet spinning, i.e., the concentration of the spinning solution and the spinning speeds are higher, and solvent recovery is easier and more complete.

The dry method is preferred for polyurethan fibre, polyacrylonitrile filament, and fibres based on poly-m-phenylene isophthalamide, polybenzimidazoles, polyamidoimides, and polyimides because it gives better physicomechanical fibre properties.

The spinning speed for these fibres does normally exceed 300 m/min although speeds of 800–1000 m/min have been reported as practicable.

The quality of the finished fibres is influenced to a significant extent by the configuration of the spinning equipment (i.e., the cabinet design and the method of distributing the gas-air flow) and by the substances added to the spinning solution (esters of phosphoric acid, organosilicon compounds, etc.).

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Authors
  1. T. I. Shein
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  2. G. G. Frenkel'
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  3. G. A. Budnitskii
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  4. G. I. Kudryavtsev
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Additional information

All-Union Scientific-Research Institute for Man-Made Fibres. Translated from Khimicheskie Volokna, No. 1, pp.11–17, January–February, 1976.

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Shein, T.I., Frenkel', G.G., Budnitskii, G.A. et al. Dry-spinning fibres from solutions of polymers in high-boiling solvents. Fibre Chem 8, 15–23 (1976). https://doi.org/10.1007/BF00546589

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  • DOI: https://doi.org/10.1007/BF00546589

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