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https://irlib.pccu.edu.tw/handle/987654321/29241
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| Title: | Influence of operating parameters on surface properties of RF glow discharge oxygen plasma treated TiO2/PET film for biomedical application |
| Authors: | Pandiyaraj, K.Navaneetha
Deshmukh, R.R.
Mahendiran, R.
Su, Pi-G
Yassitepe, Emre
Shah, Ismat
Perni, Stefano
Prokopovich, Polina
Nadagouda, Mallikarjuna N. |
| Contributors: | 化學系 |
| Keywords: | RF glow discharge oxygen plasma
TiO2/PET
Surface properties
Antibacterial adhesion
Cell compatibility |
| Date: | 2014-03-01 |
| Issue Date: | 2015-01-27 13:03:43 (UTC+8) |
| 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. (C) 2013 Elsevier B.V. All rights reserved. |
| Relation: | MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS 卷: 36 頁碼: 309-319 |
| Appears in Collections: | [化學系所] 期刊論文
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