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- Title
Structure of Polyacrylonitrile Fibers Produced from N-Methylmorpholine-N-Oxide Solutions.
- Authors
Makarov, I. S.; Golova, L. K.; Vinogradov, M. I.; Levin, I. S.; Sorokin, S. E.
- Abstract
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.
- Subjects
POLYACRYLONITRILES; FIBERS; DIFFRACTION patterns; MANUFACTURING processes; X-ray diffraction
- Publication
Fibre Chemistry, 2019, Vol 50, Issue 6, p508
- ISSN
0015-0541
- Publication type
Article
- DOI
10.1007/s10692-019-10020-9