Influence of agitation on the growth of TiO 2 nanotubes on the surface of commercially pure titanium discs.

Materia

article

Barbara Lois Mathias de Souza¹  Roberto Zenhei Nakazato¹  Ana Paula Rosifini Alves Claro¹  Ana Lúcia do Amaral Escada¹ 

[1] UNESP

关键词: Agitation;    Anodization;    Biomaterials;    Titanium;   

DOI  :  10.1590/S1517-707620210001.1250

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

Current strategies in the design of biomaterials include altering the surface properties of the biomaterial to systematically direct cellular behavior. Titanium is the most prevalent material for use in implants due to 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 a better response when inserted into the human body. Objective of the present work was the growth of TiO2 nanotubes on the surface of commercially pure titanium discs and the reduction of anodization time, with agitation during anodic oxidation, voltage of 30V and electrolyte composed of 90-10% (v/v) ethyleneglycol-H2O and 1% NH4F (w/w). To determine the best agitation intensity, a time of 20 minutes was established. The agitation intensity was classified by the observation method, classified as weak, moderate and vigorous. To determine the best anodic oxidation time, moderate agitation intensity was established. The anodizing time should allow the structure to reorganize and increase the degree of self-organization, thus, times of 20, 30 and 40 minutes have been established. Then, the samples were subjected to calcination in an EDG muffle furnace with a heating rate of 5ºC/minute, maintained for 1 hour at 450ºC. The surface morphology was analyzed by scanning electron microscopy (SEM), contact angle and X-ray diffraction (XRD).

【 授权许可】

CC BY