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Physical, Mechanical and Biological Performance of Phb-Chitosan/Mwcnts Nanocomposite Coating Deposited on Bioglass Based Scaffold: Potential Application in Bone Tissue Engineering Publisher Pubmed



Parvizifard M1 ; Karbasi S2
Authors
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Authors Affiliations
  1. 1. Student Research Committee, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Biomaterials and Tissue Engineering, School of Advanced Technology in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Source: International Journal of Biological Macromolecules Published:2020


Abstract

Nowadays, using the nanocomposite coatings on bioceramic scaffolds is a great interest for many researchers to improve the properties of these scaffolds. In this study, the effect of poly (3-hydroxybutyrate) PHB-Chitosan (Cs)/multi-walled carbon nanotubes (MWCNTs) nanocomposite coating deposited on nano-bioglass (nBG)-titania (nTiO2) scaffolds fabricated by foam replication method was investigated. Structural analyses such as XRD and FT-IR confirmed the presence of PHB, Cs and MWCNTs in the coated scaffolds. The results of SEM and porosity measurement showed that even with 1 wt% MWCNTs, scaffolds have a high percentage of interconnected porosity. The compressive strength of the scaffolds coated with PHB-Cs/MWCNTs (1 wt%) was increased up to 30 folds compared to nBG/nTiO2 scaffold. The surface roughness of the coated scaffolds, which was determined by AFM, was increased. The nanocomposite coating caused a decrease in contact angle and retaining the negative zeta potential of the coated scaffolds. The increase in pH and degradation rate was observed in the coated scaffolds. Increasing the apatite-like formation by the presence of PHB-Cs/MWCNTs was confirmed by SEM, EDAX and XRD tests. PHB-Chitosan/MWCNTs nanocomposite coating lead to more proliferation and viability of MG-63 cells and higher secretion of alkaline phosphatase. © 2020 Elsevier B.V.
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