Influência da agitação no crescimento de nanotubos de TiO2 na superfície de discos de titânio comercialmente puro

• Autor(a) principal: Souza, Barbara Lois Mathias de [UNESP]
• Data de Publicação: 2018
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203646; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2019-10-16/000916371.pdf
• topic: Materiais biomédicos; Titânio; Nanotubos; Biomedical materials

Current strategies in the design of biomaterials include altering the surface properties of the biomaterial to systematically target cellular behavior. Titanium is the most prevalent material for use in implants because of its mechanical properties. Modifications to the titanium surface can optimize the osseointegration of an implant by modulating the immunosuppressive response, accelerating the healing process and reducing treatment time. The growth of TiO2 nanotubes through anodization can alter the surface properties of commercially pure titanium, allowing better response when inserted into the human body. The aim of the present work was the growth of TiO2 nanotubes on the surface of commercially pure titanium discs and the reduction of the anodizing time, using stirring with air injection in the solution, varying the intensity of bubbling (slow, medium and high). ) during the anode oxidation at 30 V, with electrolyte composed of 90-10% (v/v) ethylene glycol-H2O + 1% NH4F (m/m) with time of 20 minutes. After the best bubbling intensity was established, by characterization of the surface, the samples were anodized by varying the time (20, 30 and 40 minutes) and then calcined at 450ºC for 1 hour. The morphology of the surfaces was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and contact angle