Sodium functionalized graphene oxide coated titanium plates for improved corrosion resistance and cell viability
- Sodium functionalized graphene oxide coated titanium plates for improved corrosion resistance and cell viability
- Mohana Marimuthu; Murugan Veerapandian; Subramaniya Pillai Ramasundara; 홍석원; P. Sudhagar; Srinivasan Nagarajan; V. Raman; Eisuke Ito; Sanghyo Kim; Kyusik Yun; Yong Soo Kang
- Sodium; Graphene oxide; Titanium; Orthopedic implants; Corrosion; Biocompatibility
- Issue Date
- Applied surface science
- VOL 293, 124-131
- Surface functionalization is an important process that has been adopted to well explore the applicationsof nanomaterials. In this context, we demonstrate the sodium functionalized graphene oxide (NaGO) asan excellent candidate for increasing the life time of titanium (Ti) based ortho-implants. As-preparedaqueous dispersion of NaGO was used to assemble NaGO sheets on commercially pure Ti (CpTi) platesby heat controlled spin coating. The resulting wrinkled NaGO sheets play a dual role in implant mate-rial, i.e., passive layer against corrosion and biocompatible scaffold for cell viability. The preparation,physicochemical properties, and biocompatibility of NaGO coatings formed on CpTi were reported. Theelectrochemical polarization studies demonstrate the relative susceptibility of control GO and NaGOcoatings to corrosion, which outline that the NaGO coating act as a geometric blocking layer and henceprevent the implant surface from contacting corrosive media. The immunofluorescence and cell prolifer-ation studies performed using human dermal fibroblasts cells showed that NaGO coatings significantly(P < 0.05) enhanced the cellular viability for longer in vitro culture period (15 days) than control GO andpristine CpTi.
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