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Structure of Polyacrylonitrile Fibers Produced from N-Methylmorpholine-N-Oxide Solutions

  • CHEMISTRY AND TECHNOLOGY OF CHEMICAL FIBERS
  • Published:
Fibre Chemistry Aims and scope

Structural and morphological evolution of polyacrylonitrile (PAN) samples from starting powder of a ternary copolymer to fibers produced from concentrated solutions of PAN in N-methylmorpholine-N-oxide (NMMO) was studied using x-ray diffraction for the first time. X-ray exposures in transmission and reflection geometries allowed the structures of outer and inner parts of the PAN fibers to be differentiated. It was shown that a shell—core structure formed in the precipitation bath during fiber spinning. A comparison of x-ray diffraction patterns of fibers spun using the NMMO process and industrial samples spun from DMSO and aqueous sodium thiocyanate solutions did not reveal fundamental structural differences.

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We thank L. K. Kuznetsova and V. G. Kulichikhin. The work was performed in the framework of a State Task for the IPS, RAS.

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Authors and Affiliations

  1. A. V. Topchiev Institute of Petrochemical Synthesis, Moscow, Russia

    I. S. Makarov, L. K. Golova, M. I. Vinogradov, I. S. Levin & S. E. Sorokin

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  1. I. S. Makarov
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  2. L. K. Golova
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  3. M. I. Vinogradov
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  4. I. S. Levin
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  5. S. E. Sorokin
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Correspondence to I. S. Makarov.

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Translated from Khimicheskie Volokna, No. 6, pp. 33-37, November—December, 2018.

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Makarov, I.S., Golova, L.K., Vinogradov, M.I. et al. Structure of Polyacrylonitrile Fibers Produced from N-Methylmorpholine-N-Oxide Solutions. Fibre Chem 50, 508–513 (2019). https://doi.org/10.1007/s10692-019-10020-9

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  • DOI: https://doi.org/10.1007/s10692-019-10020-9

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