Electrochemical and in vitro bioactivity of polypyrrole/ceramic nanocomposite coatings on 316L SS bio-implants
- Title
- Electrochemical and in vitro bioactivity of polypyrrole/ceramic nanocomposite coatings on 316L SS bio-implants
- Other Titles
- ceramic nanocomposite coatings on 316L SS bio-implants
- Author
- 김형범
- Keywords
- Nanocomposites; Polypyrrole; Nano Nb2O5; Electrochemical deposition; MG63 osteoblast cell.
- Issue Date
- 2014-12
- Publisher
- Elsevier Science B. V., Amsterdam
- Citation
- Materials Science and Engineering C,Vol.43 No.- [2014],76-85
- Abstract
- The present investigation describes the versatile fabrication and characterization of a novel composite coating that consists of polypyrrole (PPy) and Nb 2 O 5 nanoparticles. Integration of the two materials is achieved by electrochemical deposition on 316L stainless steel (SS) from an aqueous solution of oxalic acid containing pyrrole and Nb 2 O 5 nanoparticles. Fourier transform infrared spectral (FTIR) and X-ray diffraction (XRD) studies revealed that the existence of Nb 2 O 5 nanoparticles in PPy matrix with hexagonal structure. Surface morphological analysis showed that the presence of Nb 2 O 5 nanoparticles strongly influenced the surface nature of the nanocomposite coated 316L SS. Micro hardness results revealed the enhanced mechanical properties of PPy nanocomposite coated 316L SS due to the addition of Nb 2 O 5 nanoparticles. The electrochemical studies were carried out using cyclic polarization and electrochemical impedance spectroscopy (EIS) measurements. In order to evaluate the biocompatibility, contact angle measurements and in vitro characterization were performed in simulated body fluid (SBF) and on MG63 osteoblast cells. The results showed that the nanocomposite coatings exhibit superior biocompatibility and enhanced corrosion protection performance over 316L SS than pure PPy coatings.
- URI
- https://www.sciencedirect.com/science/article/pii/S0928493114004056https://repository.hanyang.ac.kr/handle/20.500.11754/69931
- ISSN
- 0928-4931
- DOI
- 10.1016/j.msec.2014.07.005
- Appears in Collections:
- GRADUATE SCHOOL OF BIOMEDICAL SCIENCE AND ENGINEERING[S](의생명공학전문대학원) > ETC
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