Sodium functionalized graphene oxide coated titanium plates for improved corrosion resistance and cell viability

Title
Sodium functionalized graphene oxide coated titanium plates for improved corrosion resistance and cell viability
Authors
Mohana MarimuthuMurugan VeerapandianSubramaniya Pillai Ramasundara홍석원P. SudhagarSrinivasan NagarajanV. RamanEisuke ItoSanghyo KimKyusik YunYong Soo Kang
Keywords
Sodium; Graphene oxide; Titanium; Orthopedic implants; Corrosion; Biocompatibility
Issue Date
2014-02
Publisher
Applied surface science
Citation
VOL 293, 124-131
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/47165
ISSN
01694332
Appears in Collections:
KIST Publication > Article
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