Electrospinning zwitterion-containing nanoscale acrylic fibers

Rebecca H. Brown, Matthew T. Hunley, Michael H. Allen, Timothy Edward Long

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Free radical copolymerization of n-butyl acrylate and a sulfobetaine methacrylamide derivative provided high molecular weight zwitterionic copolymers containing 6-13 mol% betaine functionality, and the electrospinning of low T g zwitterionomers was explored for the first time. Copolymerizations were performed in dimethylsulfoxide (DMSO) rather than fluorinated solvents previously reported in the literature. Dynamic mechanical analysis of zwitterionomer films revealed biphasic morphology and featured a rubbery plateau and two distinct thermal transitions. Electrospinning from chloroform/ethanol (80/20 v/v) solutions at low concentrations between 2 and 7 wt% afforded nanoscale polymeric fibers with diameters near 100 nm. The presence of only 6 mol% zwitterion allowed the formation of low T g, free-standing, non-woven mats, and we hypothesize that zwitterionic aggregation rather than chain entanglements facilitated electrospinning at these relatively low solution concentrations. To our knowledge, this is the first report of electrospun zwitterionic polymers and these non-woven membranes are expected to lead to new applications for sulfobetaine copolymers.

Original languageEnglish
Pages (from-to)4781-4787
Number of pages7
JournalPolymer
Volume50
Issue number20
DOIs
Publication statusPublished - 2009 Sep 23
Externally publishedYes

Keywords

  • Electrospinning
  • Ionomer
  • Zwitterion

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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  • Cite this

    Brown, R. H., Hunley, M. T., Allen, M. H., & Long, T. E. (2009). Electrospinning zwitterion-containing nanoscale acrylic fibers. Polymer, 50(20), 4781-4787. https://doi.org/10.1016/j.polymer.2009.08.017