Gemini surfactant electrospun membranes

Matthew P. Cashion, Xiaolin Li, Yan Geng, Matthew T. Hunley, Timothy Edward Long

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Our research demonstrates electrospun nonwoven fibrous scaffolds from a low molar mass gemini ammonium surfactant, N,N'-didodecyl-N,N,N',N'-tetramethyl-N, N'-ethanediyldiammonium dibromide (12-2-12). Cryogenic transmission electron microscopy (cryo-TEM) and solution rheological experiments revealed micellar morphological transitions of 12-2-12 in water and watenmethanol (1:1 vol). The microstructure of 12-2-12 in water transitioned from entangled, cylindrical, threadlike micelles to branched threadlike micelles, and a viscoelastic, entangled, highly branched network of threadlike micelles with increasing concentration finally formed. In sharp contrast, the solution behavior of 12-2-12 in watenmethanol produced a drastically different micellar microstructure compared to that in water, and the morphology transitioned from partitioned, globular micelles to overlapped micelles at an overlap concentration (C*) of 11 wt %. Electrospinning 12-2-12 from water did not produce fibers at any concentration; however, electrospinning 122-12 in watenmethanol at concentrations greater than 2C* produced hydrophilic continuous fibers with diameters ranging from 0.9 to 7 μm. High surface area scaffolds with hydrophilic surfaces offer potential as charged controlledrelease membranes, tissue engineering scaffolds, and coatings for biologically compatible devices.

Original languageEnglish
Pages (from-to)678-683
Number of pages6
JournalLangmuir
Volume26
Issue number2
DOIs
Publication statusPublished - 2010 Jan 19
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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  • Cite this

    Cashion, M. P., Li, X., Geng, Y., Hunley, M. T., & Long, T. E. (2010). Gemini surfactant electrospun membranes. Langmuir, 26(2), 678-683. https://doi.org/10.1021/la902287b