Fabrication and morphology control of electrospun poly(γ-glutamic acid) nanofibers for biomedical applications

Shige Wang, Xueyan Cao, Mingwu Shen, Rui Guo, I. Bányai, Xiangyang Shi

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

We report the fabrication of water-stable electrospun γ-polyglutamic acid (γ-PGA) nanofibers with morphology control for biomedical applications. In this study, the processing variables including polymer concentration, flow rate, applied voltage, collection distance, and ambient humidity were systematically optimized to generate uniform γ-PGA nanofibers with a smooth morphology. By changing the trifluoroacetic acid concentration in the electrospinning solution, the diameter of the γ-PGA nanofibers can be controlled within the range of 186-603. nm. To render the γ-PGA nanofibers with good water stability, cystamine was employed as a crosslinking agent to amidate the carboxyl groups of γ-PGA. Furthermore, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide colorimetric assay in conjunction of cell morphology observation reveals that the obtained γ-PGA nanofibers have an excellent biocompatibility to promote the cell adhesion and proliferation. We anticipate that the fabricated electrospun γ-PGA nanofibers with controllable morphology and good water stability may find extensive applications in future development of tissue engineering scaffold materials, drug delivery systems, environmental remediation, and sensing.

Original languageEnglish
Pages (from-to)254-264
Number of pages11
JournalColloids and Surfaces B: Biointerfaces
Volume89
Issue number1
DOIs
Publication statusPublished - Jan 1 2012

Fingerprint

Prostaglandins A
Nanofibers
glutamic acid
Glutamic Acid
Fabrication
fabrication
Acids
water
conjunction
acids
Water
tissue engineering
carboxyl group
biocompatibility
crosslinking
cells
Cystamine
Polyglutamic Acid
Tissue Scaffolds
Trifluoroacetic acid

Keywords

  • Biocompatibility
  • Electrospinning
  • Morphology control
  • Nanofibers
  • Poly(γ-glutamic acid)
  • Water stability

ASJC Scopus subject areas

  • Biotechnology
  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces

Cite this

Fabrication and morphology control of electrospun poly(γ-glutamic acid) nanofibers for biomedical applications. / Wang, Shige; Cao, Xueyan; Shen, Mingwu; Guo, Rui; Bányai, I.; Shi, Xiangyang.

In: Colloids and Surfaces B: Biointerfaces, Vol. 89, No. 1, 01.01.2012, p. 254-264.

Research output: Contribution to journalArticle

Wang, Shige ; Cao, Xueyan ; Shen, Mingwu ; Guo, Rui ; Bányai, I. ; Shi, Xiangyang. / Fabrication and morphology control of electrospun poly(γ-glutamic acid) nanofibers for biomedical applications. In: Colloids and Surfaces B: Biointerfaces. 2012 ; Vol. 89, No. 1. pp. 254-264.
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