title: Effect of DC glow discharge plasma treatment on PET/TiO(2) thin film surfaces for enhancement of bioactivity.
abstract: In this paper, the surfaces of PET/TiO(2) thin film were modified by DC glow discharge plasma as a function of discharge potentials for improving the bioactivity. The hydrophilicity of the plasma-treated PET/TiO(2) film was measured by contact angle measurement and the surface energy was estimated by using Fowkes method. The structural and chemical composition of the plasma-treated PET/TiO(2) was analysed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Immersion in a simulated body solution (SBF) solution was used to evaluate the bioactivity of the plasma-treated PET/TiO(2) samples in vitro. It was found that the plasma treatment modified the surfaces both in chemical composition and crystallinity which makes surface of the PET/TiO(2) to become more hydrophilic compared with untreated one. Analytical and microstructural investigations of SBF results, showed considerable higher rates of apatite formation on the plasma-treated PET/TiO(2) compared to the untreated films.
authors.affiliation: Plasma Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, India.
authors.forename: K
authors.initials: K
authors.lastname: Navaneetha Pandiyaraj
authors.forename: V
authors.initials: V
authors.lastname: Selvarajan
authors.forename: Young Ha
authors.initials: YH
authors.lastname: Rhee
authors.forename: Hyoung Woo
authors.initials: HW
authors.lastname: Kim
authors.forename: Matteo
authors.initials: M
authors.lastname: Pavese
mesh_terms: D001031:Apatites / Q000737:chemistry; D040761:Biomimetic Materials / Q000737:chemistry; D032701:Biomimetics / Q000295:instrumentation / Q000379:methods; D001826:Body Fluids / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D056951:Photoelectron Spectroscopy; D011092:Polyethylene Glycols / Q000737:chemistry*; D011093:Polyethylene Terephthalates; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D001031:Apatites; D020099:Coated Materials, Biocompatible; D011093:Polyethylene Terephthalates; D012996:Solutions; C009495:titanium dioxide; D011092:Polyethylene Glycols; D014025:Titanium