title: Preparation and characterization of multi-walled carbon nanotube/hydroxyapatite nanocomposite film dip coated on Ti-6Al-4V by sol-gel method for biomedical applications: an in vitro study.
abstract: In the present research, the introduction of multi-walled carbon nanotubes (MWCNTs) into the hydroxyapatite (HA) matrix and dip coating of nanocomposite on titanium alloy (Ti-6Al-4V) plate was conducted in order to improve the performance of the HA-coated implant via the sol-gel method. The structural characterization and electron microscopy results confirmed well crystallized HA-MWCNT coating and homogenous dispersion of carbon nanotubes in the ceramic matrix at temperatures as low as 500 °C. The evaluation of the mechanical properties of HA and HA/MWCNT composite coatings with different weight percentages of MWCNTs showed that the addition of low concentrations of MWCNTs (0.5 and 1 wt.%) had improved effect on the mechanical properties of nanocomposite coatings. Moreover, this in vitro study ascertained the biocompatibility of the prepared sol-gel-derived HA/MWCNT composite coatings.
authors.affiliation: Department of Dental Biomaterials, School of Dentistry/Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Alireza
authors.initials: A
authors.lastname: Abrishamchian
authors.forename: Tabassom
authors.initials: T
authors.lastname: Hooshmand
authors.forename: Mohammadreza
authors.initials: M
authors.lastname: Mohammadi
authors.forename: Farhood
authors.initials: F
authors.lastname: Najafi
mesh_terms: D000497:Alloys; D020811:Biomedical Technology; D020099:Coated Materials, Biocompatible / Q000494:pharmacology*; D017886:Durapatite / Q000494:pharmacology*; D055119:Elastic Modulus / Q000187:drug effects; D006244:Hardness; D006801:Humans; D008422:Materials Testing; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects / Q000648:ultrastructure; D018625:Microscopy, Atomic Force; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D044367:Phase Transition; D017550:Spectroscopy, Fourier Transform Infrared; D055672:Static Electricity; D014025:Titanium / Q000494:pharmacology*; D014961:X-Ray Diffraction
chemical_list: D000497:Alloys; D020099:Coated Materials, Biocompatible; D037742:Nanotubes, Carbon; C031462:titanium alloy (TiAl6V4); D017886:Durapatite; D014025:Titanium