View in EDS

Porous Nylon-6 Fibers via a Novel Salt-Induced Electrospinning Method.

Saved in:
Bibliographic Details
Title: Porous Nylon-6 Fibers via a Novel Salt-Induced Electrospinning Method.
Authors: Amit Gupta1, Carl D. Saquing1, Mehdi Afshari1, Alan E. Tonelli1, Saad A. Khan1, Richard Kotek1
Source: Macromolecules. Feb2009, Vol. 42 Issue 3, p709-715. 7p.
Subjects: Nylon, Porous materials, Electrospinning, Lewis acids, Gallium compounds, Hydrogen bonding, Surface area
Abstract: Porous nylon-6 fibers are obtained from Lewis acid−base complexation of gallium trichloride (GaCl3) and nylon-6 using electrospinning followed by GaCl3removal. DSC and FTIR results reveal that the electrospun fibers, prior to GaCl3removal, are amorphous with no hydrogen bonds present between nylon-6 chains. GaCl3being a Lewis acid interacts with the Lewis base sites (CO groups) on the nylon-6 chains, thereby preventing the chains to crystallize via intermolecular hydrogen bonding. Subsequent removal of GaCl3from the as-spun fibers by soaking the electrospun web in water for 24 h leads to the formation of pores throughout the fibers. While the average fiber diameter remains effectively the same after salt removal, the average surface area increases by more than a factor of 6 for the regenerated fibers. The dual use of a metal salt (Lewis acid) to (a) facilitate fiber formation by temporary removal of polymer interchain interactions and (b) act as a porogen provides a facile approach to obtain porous fibers via electrospinning. [ABSTRACT FROM AUTHOR]
Copyright of Macromolecules is the property of American Chemical Society 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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 36452010
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Porous Nylon-6 Fibers via a Novel Salt-Induced Electrospinning Method.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Amit+Gupta%22">Amit Gupta</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Carl+D%2E+Saquing%22">Carl D. Saquing</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Mehdi+Afshari%22">Mehdi Afshari</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Alan+E%2E+Tonelli%22">Alan E. Tonelli</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Saad+A%2E+Khan%22">Saad A. Khan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Richard+Kotek%22">Richard Kotek</searchLink><relatesTo>1</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Macromolecules%22">Macromolecules</searchLink>. Feb2009, Vol. 42 Issue 3, p709-715. 7p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Nylon%22">Nylon</searchLink><br /><searchLink fieldCode="DE" term="%22Porous+materials%22">Porous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Electrospinning%22">Electrospinning</searchLink><br /><searchLink fieldCode="DE" term="%22Lewis+acids%22">Lewis acids</searchLink><br /><searchLink fieldCode="DE" term="%22Gallium+compounds%22">Gallium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+bonding%22">Hydrogen bonding</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+area%22">Surface area</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Porous nylon-6 fibers are obtained from Lewis acid−base complexation of gallium trichloride (GaCl3) and nylon-6 using electrospinning followed by GaCl3removal. DSC and FTIR results reveal that the electrospun fibers, prior to GaCl3removal, are amorphous with no hydrogen bonds present between nylon-6 chains. GaCl3being a Lewis acid interacts with the Lewis base sites (CO groups) on the nylon-6 chains, thereby preventing the chains to crystallize via intermolecular hydrogen bonding. Subsequent removal of GaCl3from the as-spun fibers by soaking the electrospun web in water for 24 h leads to the formation of pores throughout the fibers. While the average fiber diameter remains effectively the same after salt removal, the average surface area increases by more than a factor of 6 for the regenerated fibers. The dual use of a metal salt (Lewis acid) to (a) facilitate fiber formation by temporary removal of polymer interchain interactions and (b) act as a porogen provides a facile approach to obtain porous fibers via electrospinning. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Macromolecules is the property of American Chemical Society 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=36452010
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1021/ma801918c
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 7
        StartPage: 709
    Subjects:
      – SubjectFull: Nylon
        Type: general
      – SubjectFull: Porous materials
        Type: general
      – SubjectFull: Electrospinning
        Type: general
      – SubjectFull: Lewis acids
        Type: general
      – SubjectFull: Gallium compounds
        Type: general
      – SubjectFull: Hydrogen bonding
        Type: general
      – SubjectFull: Surface area
        Type: general
    Titles:
      – TitleFull: Porous Nylon-6 Fibers via a Novel Salt-Induced Electrospinning Method.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Amit Gupta
      – PersonEntity:
          Name:
            NameFull: Carl D. Saquing
      – PersonEntity:
          Name:
            NameFull: Mehdi Afshari
      – PersonEntity:
          Name:
            NameFull: Alan E. Tonelli
      – PersonEntity:
          Name:
            NameFull: Saad A. Khan
      – PersonEntity:
          Name:
            NameFull: Richard Kotek
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 10
              M: 02
              Text: Feb2009
              Type: published
              Y: 2009
          Identifiers:
            – Type: issn-print
              Value: 00249297
          Numbering:
            – Type: volume
              Value: 42
            – Type: issue
              Value: 3
          Titles:
            – TitleFull: Macromolecules
              Type: main
ResultId 1