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Gemini surfactant electrospun membranes.

Matthew P Cashion1, Xiaolin Li, Yan Geng

  • 1Department of Chemistry, Macromolecules and Interfaces Institute, Virginia Tech (0212), Blacksburg, Virginia 24061, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|August 18, 2009
PubMed
Summary
This summary is machine-generated.

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Researchers created electrospun fibrous scaffolds from a gemini ammonium surfactant (12-2-12). These hydrophilic scaffolds, produced in a water:methanol solution, show promise for controlled release and tissue engineering applications.

Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Biomaterials Engineering

Background:

  • Gemini surfactants exhibit unique self-assembly properties in solution.
  • Controlling micellar morphology is crucial for developing advanced materials.
  • Electrospinning requires specific solution properties to form continuous fibers.

Purpose of the Study:

  • To investigate the solution behavior and micellar transitions of a gemini surfactant (12-2-12) in different solvents.
  • To fabricate electrospun nonwoven fibrous scaffolds using the gemini surfactant.
  • To evaluate the potential applications of the resulting scaffolds.

Main Methods:

  • Cryogenic transmission electron microscopy (cryo-TEM) to visualize micellar structures.
  • Solution rheological experiments to study viscoelastic properties.

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  • Electrospinning of the surfactant solutions to produce fibrous scaffolds.

    • Main Results:

    • In water, 12-2-12 formed entangled, threadlike micelles and a branched network at higher concentrations.
    • In water:methanol, 12-2-12 formed globular and overlapped micelles, with an overlap concentration (C*) of 11 wt %.
    • Continuous hydrophilic fibers (0.9-7 microm diameter) were successfully electrospun from water:methanol solutions at concentrations >2C*.

    Conclusions:

    • The solvent system significantly influences the micellar morphology of gemini surfactants.
    • Electrospinning is feasible for creating fibrous scaffolds from 12-2-12 in a mixed solvent system.
    • The resulting high surface area, hydrophilic scaffolds have potential in controlled release, tissue engineering, and biocompatible coatings.