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Fabrication and Characterization of Pva/Gum Tragacanth/Pcl Hybrid Nanofibrous Scaffolds for Skin Substitutes Publisher Pubmed



Zarekhalili Z1 ; Bahrami SH1 ; Ranjbarmohammadi M2 ; Milan PB3
Authors
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Authors Affiliations
  1. 1. Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran
  2. 2. Department of Textile Engineering, Faculty of Engineering, University of Bonab, Bonab, Iran
  3. 3. School of Advanced Medical Technologies, Tissue Engineering Department, Tehran University of Medical Sciences, Tehran, Iran

Source: International Journal of Biological Macromolecules Published:2017


Abstract

In this work three dimensional biodegradable nanofiberous scaffolds containing poly(ε-caprolactone) (PCL), poly(vinyl alcohol) (PVA) and gum tragacanth (GT) were successfully fabricated through two nozzles electrospinning process. For this purpose, PVA/GT blend (Blend: B) solution (60:40 wt%) was injected from one syringe and poly(ε-caprolactone) solution from the other one. Presence of PVA and PCL in the formulation improved the electrospinning process of GT solution and mechanical properties of the fabricated nanofibers. Scanning electron microscopy (SEM) results showed uniform PVA/GT-PCL blend-hybrid (Blend-Hybrid: B-H) nanofibers with the diameter ranging about 132 ± 27 nm. Hybrid nanofibers were evaluated by Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) tests. The antibacterial activities of the PVA/GT-PCL (B-H) nanofibers were conducted against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus and results indicated that the hybrid nanofibers were 95.19% antibacterial against S. aureus bacterium. NIH 3T3 fibroblast cells growth and MTT assay were carried out on the scaffolds. Hydrophilicity nature, favorable mechanical properties of the fabricated hybrid nanofibers, along with their structure in biological media, biocompatibility, as well as antibacterial property indicate scaffolds prepared are suitable for tissue engineering. © 2016 Elsevier B.V.
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