Pandiyaraj, K. Navaneetha, Deshmukh, R. R., Mahendiran, R., Su, Pi-G, Yassitepe, Emre, Shah, Ismat, Perni, Stefano, Prokopovich, Polina  ORCID: https://orcid.org/0000-0002-5700-9570 and Nadagouda, Mallikarjuna N.
2014.
Influence of operating parameters on surface properties of RF glow discharge oxygen plasma treated TiO2/PET film for biomedical application.
Materials Science and Engineering C
36
, pp. 309-319.
10.1016/j.msec.2013.12.018
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Abstract
In this paper, a thin transparent titania (TiO2) film was coated on the surface of flexible poly(ethylene terephthalate) (PET) film using the sol–gel method. The surface properties of the obtained TiO2/PET film were further improved by RF glow discharge oxygen plasma as a function of exposure time and discharge power. The changes in hydrophilicity of TiO2/PET films were analyzed by contact angle measurements and surface energy. The influence of plasma on the surface of the TiO2/PET films was analyzed by atomic force microscopy (AFM) as well as the change in chemical state and composition that were investigated by X-ray photo electron spectroscopy (XPS). The cytotoxicity of the TiO2/PET films was analyzed using human osteoblast cells and the bacterial eradication behaviors of TiO2/PET films were also evaluated against Staphylococcus bacteria. It was found that the surface roughness and incorporation of oxygen containing polar functional groups of the plasma treated TiO2/PET films increased substantially as compared to the untreated one. Moreover the increased concentration of Ti3 + on the surface of plasma treated TiO2/PET films was due to the transformation of chemical states (Ti4 + → Ti3 +). These morphological and chemical changes are responsible for enhanced hydrophilicity of the TiO2/PET films. Furthermore, the plasma treated TiO2/PET film exhibited no citotoxicity against osteoblast cells and antibacterial activity against Staphylococcus bacteria which can find application in manufacturing of biomedical devices.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Pharmacy Schools > Engineering |
| Subjects: | R Medicine > RS Pharmacy and materia medica |
| Publisher: | Elsevier |
| ISSN: | 0928-4931 |
| Date of First Compliant Deposit: | 30 March 2016 |
| Last Modified: | 30 Nov 2024 03:45 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/60991 |
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