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Journal of Materials Science

, Volume 44, Issue 20, pp 5682–5687 | Cite as

Study on the structure of SF fiber mats electrospun with HFIP and FA and cells behavior

  • Feng Zhang
  • Bao Q. ZuoEmail author
  • Lun Bai
Article

Abstract

Bombyx mori silk fibroin (SF) fiber mats were prepared by electrospinning with the solvent of hexafluoroisopropanol (HFIP) and formic acid (FA). The average diameters of SF fiber mats observed by SEM were 2.0 and 0.3 μm when different solvent, HFIP and FA, were used. Fourier transform infrared and X-ray diffraction were employed to study the secondary structure of the SF fiber mats; the results showed that the electrospin solvent not only affect the secondary structure of as-spun SF fiber mats, but also indirectly affect the structure transition of SF fiber mats post-treatment with ethanol. And the SF fiber mats electrospun with FA showed more β-sheet structure before and after ethanol treatment. The differential thermal analysis curve indicated that the solvent of HFIP or FA had a weak effect on the thermal properties of SF fiber mats. To assay the cytocompatibility and cell behavior on the SF fiber mats, cell attachment, spreading, and proliferation of normal human epidermal fibroblasts (NHEF) seeded on the scaffolds was studied. The results indicated that the SF fiber mats support NHEF attachment and growth on SF fiber mats in vitro, and no difference between the SF fiber mats electrospun with HFIP and FA was observed. In this article, a desired morphology and secondary structure of SF fiber mats could be prepared by choosing different electrospinning solvent.

Keywords

Formic Acid Silk Fibroin Ethanol Treatment HFIP Random Coil Conformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

The present works is supported financially by the Natural Science Foundation of Jiangsu Su (No. BK2007054) and sponsored by National Base Research Program of China (973 program) (2005CB623902).

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Material Engineering Institute of Soochow UniversitySuzhouPeople’s Republic of China

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