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Synthesis and characterization of gold nanotube/nanowire-polyurethane composite based on castor oil and polyethylene glycol

Ganji, Y ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.msec.2014.05.030
  3. Abstract:
  4. Gold nanotubes/nanowires (GNT/NW) were synthesized by using the template-assisted electrodeposition technique and mixed with castor oil-polyethylene glycol based polyurethane (PU) to fabricate porous composite scaffolds for biomedical application. 100 and 50 ppm of GNT/NW were used to synthesize composites. The composite scaffolds were characterized by Fourier transform infrared spectroscopy, dynamic mechanical thermal analysis, differential scanning calorimetry, and scanning electron microscopy. Cell attachment on polyurethane-GNT/NW composites was investigated using fat-derived mesenchymal stem cells. Addition of 50 or 100 ppm GNT/NW had significant effects on thermal, mechanical, and cell attachment of polyurethane. Higher crosslink density and better cell attachment and proliferation were observed in polyurethane containing 50 ppm GNT/NW. The results revealed that GNT/NW formed hydrogen bonding with the polyurethane matrix and improved the thermomechanical properties of nanocomposites. Compared with pure PU, better cellular attachment on polyurethane-GNT/NW composites was observed resulting from the improved surface properties of composites
  5. Keywords:
  6. Gold nanotube/nanowire ; Polyethylene glycol ; Polyurethane ; Scaffold ; Cell culture ; Differential scanning calorimetry ; Fourier transform infrared spectroscopy ; Gold ; Hydrogen bonds ; Medical applications ; Nanotubes ; Polyethylene glycols ; Scaffolds ; Scanning electron microscopy ; Thermoanalysis ; Vegetable oils ; Dynamic mechanical thermal analysis ; Gold nanotubes ; Porous composite scaffold ; Properties of composites ; Synthesis and characterizations ; Template-assisted electrodepositions ; Thermomechanical properties ; Polyurethanes ; Macrogol derivative ; Nanocomposite ; Nanotube ; Nanowire ; Polyurethan ; Animal ; Chemistry ; Mesenchymal stroma cell ; Porosity ; Rabbit ; Tissue scaffold ; Ultrastructure ; Animals ; Castor Oil ; Cell Adhesion ; Cells, Cultured ; Mesenchymal Stromal Cells ; Nanocomposites
  7. Source: Materials Science and Engineering C ; Vol. 42 , 2014 , pp. 341-349 ; ISSN: 09284931
  8. URL: http://www.sciencedirect.com/science/article/pii/S0928493114003063