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The role of the solvent nature in stretching polymer solutions (polyacrylonitrile spinning using different solvents).

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Title: The role of the solvent nature in stretching polymer solutions (polyacrylonitrile spinning using different solvents).
Authors: Kuzin, M.S.1 (AUTHOR), Skvortsov, I. Yu1 (AUTHOR), Gerasimenko, P.S.1 (AUTHOR), Subbotin, A.V.1,2 (AUTHOR), Malkin, A.Ya.1 (AUTHOR) alex_malkin@mig.phys.msu.ru
Source: Journal of Molecular Liquids. Dec2023:Part 2, Vol. 392, pN.PAG-N.PAG. 1p.
Subjects: Polymer solutions, Polyacrylonitriles, Polymers, Solvents, Polymer blends, Fiber orientation, Surface tension
Abstract: [Display omitted] • Solvent-polymer affinity shapes stable fiber formation. • Bicomponent solvents enable stable fiber spinning. • PAN spinnability depends on relaxation time and solvent affinity. • Macromolecular orientation promotes gel formation for fiber spinning. • Optimal solvent choice prevents jet thinning and fiber breakage. We investigated how different solvents' affinity with polyacrylonitrile affects the formation of a jet that leads to stable fiber spinning. The study focused on two concentrations, one near and one above the crossover point where the topological entanglements are formed in the semi-dilute solutions. The role of the physical parameters of the solutions, including solvent-polymer affinity, viscosity, surface tension, and relaxation times, was analyzed. The experiment involved the uniaxial deformation of a solution drop under its weight, observed using a high-speed microscopic camera. The stability of the jet was associated with the relaxation time and solvent-polymer affinity. The continuous fiber spinning is mainly determined by the high enough polymer concentration in the solution, and the solvent nature, or by how the solution state is close to the theta conditions. Bicomponent mixed solvents offer two viable routes to achieve this – evaporating a more volatile component from the mixture to increase the polymer concentration, or modifying the solvent with a combination of solvents of different solvent quality. Both approaches have been experimentally validated, enabling the production of continuous stable fibers in the gel stretching regime. In this case, the jet stretching occurs under conditions Wi > 1. Thereby, the transition to the gel state promotes the necessary conditions for macromolecule orientation during fiber spinning. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Molecular Liquids is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 173807732
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: The role of the solvent nature in stretching polymer solutions (polyacrylonitrile spinning using different solvents).
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  Data: <searchLink fieldCode="AR" term="%22Kuzin%2C+M%2ES%2E%22">Kuzin, M.S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Skvortsov%2C+I%2E+Yu%22">Skvortsov, I. Yu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gerasimenko%2C+P%2ES%2E%22">Gerasimenko, P.S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Subbotin%2C+A%2EV%2E%22">Subbotin, A.V.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Malkin%2C+A%2EYa%2E%22">Malkin, A.Ya.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> alex_malkin@mig.phys.msu.ru</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Molecular+Liquids%22">Journal of Molecular Liquids</searchLink>. Dec2023:Part 2, Vol. 392, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Polymer+solutions%22">Polymer solutions</searchLink><br /><searchLink fieldCode="DE" term="%22Polyacrylonitriles%22">Polyacrylonitriles</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Solvents%22">Solvents</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+blends%22">Polymer blends</searchLink><br /><searchLink fieldCode="DE" term="%22Fiber+orientation%22">Fiber orientation</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+tension%22">Surface tension</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] • Solvent-polymer affinity shapes stable fiber formation. • Bicomponent solvents enable stable fiber spinning. • PAN spinnability depends on relaxation time and solvent affinity. • Macromolecular orientation promotes gel formation for fiber spinning. • Optimal solvent choice prevents jet thinning and fiber breakage. We investigated how different solvents' affinity with polyacrylonitrile affects the formation of a jet that leads to stable fiber spinning. The study focused on two concentrations, one near and one above the crossover point where the topological entanglements are formed in the semi-dilute solutions. The role of the physical parameters of the solutions, including solvent-polymer affinity, viscosity, surface tension, and relaxation times, was analyzed. The experiment involved the uniaxial deformation of a solution drop under its weight, observed using a high-speed microscopic camera. The stability of the jet was associated with the relaxation time and solvent-polymer affinity. The continuous fiber spinning is mainly determined by the high enough polymer concentration in the solution, and the solvent nature, or by how the solution state is close to the theta conditions. Bicomponent mixed solvents offer two viable routes to achieve this – evaporating a more volatile component from the mixture to increase the polymer concentration, or modifying the solvent with a combination of solvents of different solvent quality. Both approaches have been experimentally validated, enabling the production of continuous stable fibers in the gel stretching regime. In this case, the jet stretching occurs under conditions Wi > 1. Thereby, the transition to the gel state promotes the necessary conditions for macromolecule orientation during fiber spinning. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Molecular Liquids is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.molliq.2023.123516
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Polymer solutions
        Type: general
      – SubjectFull: Polyacrylonitriles
        Type: general
      – SubjectFull: Polymers
        Type: general
      – SubjectFull: Solvents
        Type: general
      – SubjectFull: Polymer blends
        Type: general
      – SubjectFull: Fiber orientation
        Type: general
      – SubjectFull: Surface tension
        Type: general
    Titles:
      – TitleFull: The role of the solvent nature in stretching polymer solutions (polyacrylonitrile spinning using different solvents).
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Kuzin, M.S.
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            NameFull: Skvortsov, I. Yu
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            NameFull: Gerasimenko, P.S.
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            NameFull: Subbotin, A.V.
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            NameFull: Malkin, A.Ya.
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            – D: 25
              M: 12
              Text: Dec2023:Part 2
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 01677322
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            – Type: volume
              Value: 392
          Titles:
            – TitleFull: Journal of Molecular Liquids
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