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- Title
Peculiarities of Dissolving Polyacrylonitrile Copolymer Containing Methylsulfo Groups in N-Methylmorpholine-N-Oxide.
- Authors
Golova, L. K.; Bondarenko, G. N.; Makarov, I. S.; Kuznetsova, L. K.; Vinogradov, M. I.; Kulichikhin, V. G.
- Abstract
The process of solid-phase dissolution of polyacrylonitrile copolymer containing ionic sulfo groups in an electron-donating solvent, N-methylmorpholine-N-oxide, is studied depending on its crystal hydrate form and preparation conditions. Optical studies of the transition of solid-phase copolymer–solvent systems to a viscous flow state make it possible to construct solubility curves and reveal stages of morphological transformations during dissolution, explaining their nature. Solid-phase mixed systems are studied by IR spectroscopy, and interactions of the functional groups of the copolymer with various crystal hydrates of the solvent are analyzed both during standard mechanical mixing and mechanochemical activation under intense shear deformation, which predetermines the formation of solid solutions.
- Subjects
SHEAR (Mechanics); VISCOUS flow; POLYACRYLONITRILES; SOLID solutions; FUNCTIONAL groups; SOLUBILITY
- Publication
Polymer Science -- Series A, 2020, Vol 62, Issue 6, p597
- ISSN
0965-545X
- Publication type
Article
- DOI
10.1134/S0965545X20060036