Articles producció científica> Enginyeria Química

The role of electrical polarity in electrospinning and on the mechanical and structural properties of as-spun fibers

  • Identification data

    Identifier: imarina:8680359
    Authors:
    Ura DPRosell-Llompart JZaszczyńska AVasilyev GGradys ASzewczyk PKKnapczyk-Korczak JAvrahami RŠišková AOArinstein ASajkiewicz PZussman EStachewicz U
    Abstract:
    © 2020 by the authors. Electric field strength and polarity in electrospinning processes and their effect on process dynamics and the physical properties of as-spun fibers is studied. Using a solution of the neutral polymer such as poly(methyl methacrylate) (PMMA) we explored the electrospun jet motion issued from a Taylor cone. We focused on the straight jet section up to the incipient stage of the bending instability and on the radius of the disk of the fibers deposited on the collecting electrode. A new correlation formula using dimensionless parameters was found, characterizing the effect of the electric field on the length of the straight jet, LE ~ Ẽ0.55. This correlation was found to be valid when the spinneret was either negatively or positively charged and the electrode grounded. The fiber deposition radius was found to be independent of the electric field strength and polarity. When the spinneret was negatively charged, LE was longer, the as-spun fibers were wider. The positively charged setup resulted in fibers with enhanced mechanical properties and higher crystallinity. This work demonstrates that often-overlooked electrical polarity and field strength parameters influence the dynamics of fiber electrospinning, which is crucial for designing polymer fiber properties and optimizing their collection.
  • Others:

    Author, as appears in the article.: Ura DP; Rosell-Llompart J; Zaszczyńska A; Vasilyev G; Gradys A; Szewczyk PK; Knapczyk-Korczak J; Avrahami R; Šišková AO; Arinstein A; Sajkiewicz P; Zussman E; Stachewicz U
    Department: Enginyeria Química
    URV's Author/s: Rosell Llompart, Joan
    Keywords: Surface Stability Polymer nanofibers Poly(methyl methacrylate) Pmma Parameters Orientation Morphology Mechanical properties Mats Jet Fibers Electrospinning Electrical polarity Charges pmma fibers electrospinning electrical polarity charges
    Abstract: © 2020 by the authors. Electric field strength and polarity in electrospinning processes and their effect on process dynamics and the physical properties of as-spun fibers is studied. Using a solution of the neutral polymer such as poly(methyl methacrylate) (PMMA) we explored the electrospun jet motion issued from a Taylor cone. We focused on the straight jet section up to the incipient stage of the bending instability and on the radius of the disk of the fibers deposited on the collecting electrode. A new correlation formula using dimensionless parameters was found, characterizing the effect of the electric field on the length of the straight jet, LE ~ Ẽ0.55. This correlation was found to be valid when the spinneret was either negatively or positively charged and the electrode grounded. The fiber deposition radius was found to be independent of the electric field strength and polarity. When the spinneret was negatively charged, LE was longer, the as-spun fibers were wider. The positively charged setup resulted in fibers with enhanced mechanical properties and higher crystallinity. This work demonstrates that often-overlooked electrical polarity and field strength parameters influence the dynamics of fiber electrospinning, which is crucial for designing polymer fiber properties and optimizing their collection.
    Thematic Areas: Química Odontología Medicina veterinaria Medicina i Materials science, multidisciplinary Materiais Interdisciplinar General materials science Engenharias iv Engenharias iii Engenharias ii Engenharias i Condensed matter physics Ciências biológicas ii Ciências biológicas i Ciências agrárias i Ciência de alimentos Ciência da computação Biotecnología Astronomia / física Arquitetura, urbanismo e design
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 19961944
    Author's mail: joan.rosell@urv.cat
    Author identifier: 0000-0002-5288-9150
    Record's date: 2023-02-26
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.mdpi.com/1996-1944/13/18/4169
    Papper original source: Materials. 13 (18):
    APA: Ura DP; Rosell-Llompart J; Zaszczyńska A; Vasilyev G; Gradys A; Szewczyk PK; Knapczyk-Korczak J; Avrahami R; Šišková AO; Arinstein A; Sajkiewicz P; Zu (2020). The role of electrical polarity in electrospinning and on the mechanical and structural properties of as-spun fibers. Materials, 13(18), -. DOI: 10.3390/ma13184169
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.3390/ma13184169
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2020
    Publication Type: Journal Publications
  • Keywords:

    Materials Science, Multidisciplinary
    Surface
    Stability
    Polymer nanofibers
    Poly(methyl methacrylate)
    Pmma
    Parameters
    Orientation
    Morphology
    Mechanical properties
    Mats
    Jet
    Fibers
    Electrospinning
    Electrical polarity
    Charges
    pmma
    fibers
    electrospinning
    electrical polarity
    charges
    Química
    Odontología
    Medicina veterinaria
    Medicina i
    Materials science, multidisciplinary
    Materiais
    Interdisciplinar
    General materials science
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Condensed matter physics
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Biotecnología
    Astronomia / física
    Arquitetura, urbanismo e design
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