Imaging, spectroscopic, mechanical and biocompatibility studies of electrospun Tecoflex® EG 80A nanofibers and composites thereof containing multiwalled carbon nanotubes

Javier Macossay, Faheem A. Sheikh, Travis Cantu, Thomas M. Eubanks, M. Esther Salinas, Chakavak S. Farhangi, Hassan Ahmad, M. Shamshi Hassan, Myung Seob Khil, Shivani K. Maffi, Hern Kim, Gary L. Bowlin

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

The present study discusses the design, development, and characterization of electrospun Tecoflex® EG 80A class of polyurethane nanofibers and the incorporation of multiwalled carbon nanotubes (MWCNTs) to these materials. Scanning electron microscopy results confirmed the presence of polymer nanofibers, which showed a decrease in fiber diameter at 0.5% wt. and 1% wt. MWCNTs loadings, while transmission electron microscopy showed evidence of the MWCNTs embedded within the polymer matrix. The Fourier transform infrared spectroscopy and Raman spectroscopy were used to elucidate the polymer-MWCNTs intermolecular interactions, indicating that the C-N and N-H bonds in polyurethanes are responsible for the interactions with MWCNTs. Furthermore, tensile testing indicated an increase in the Young's modulus of the nanofibers as the MWCNTs concentration was increased. Finally, NIH 3T3 fibroblasts were seeded on the obtained nanofibers, demonstrating cell biocompatibility and proliferation. Therefore, the results indicate the successful formation of polyurethane nanofibers with enhanced mechanical properties, and demonstrate their biocompatibility, suggesting their potential application in biomedical areas.

Original languageEnglish (US)
Pages (from-to)205-213
Number of pages9
JournalApplied Surface Science
Volume321
DOIs
StatePublished - Dec 1 2014

Keywords

  • Electrospinning
  • Fibroblasts
  • Multiwalled carbon nanotubes
  • Nanofibers
  • Nanotechnology
  • Tissue engineering

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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  • Cite this

    Macossay, J., Sheikh, F. A., Cantu, T., Eubanks, T. M., Salinas, M. E., Farhangi, C. S., Ahmad, H., Hassan, M. S., Khil, M. S., Maffi, S. K., Kim, H., & Bowlin, G. L. (2014). Imaging, spectroscopic, mechanical and biocompatibility studies of electrospun Tecoflex® EG 80A nanofibers and composites thereof containing multiwalled carbon nanotubes. Applied Surface Science, 321, 205-213. https://doi.org/10.1016/j.apsusc.2014.09.198