PET surface modification by 0.2 keV and 2.5 keV argon ions

PET foils have a high potential as a material for biomedical and electrical industries. PET foils were irradiated by ions for variable irradiation time. The effects of low (2.5, 0.2 keV) energy argon ion flux irradiation on the surfaces of polyethylene terephthalate thin foils (PET) were studied. Th...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 12; no. 1; p. 012007
Main Authors Kormunda, Martin, Pavlik, Jaroslav
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2010
Subjects
Argon
Argon ions
Biomedical materials
Chain scission
Chemical bonds
Chemical composition
Cleavage
Electric potential
Foils
Fourier transforms
Infrared spectroscopy
Ion flux
Ion sources
Irradiation
Oxygen atoms
Photoelectrons
Polyethylene terephthalate
Polyethylene terephthalates
Spectrum analysis
Surface layer
Surface layers
X ray photoelectron spectroscopy
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Summary:PET foils have a high potential as a material for biomedical and electrical industries. PET foils were irradiated by ions for variable irradiation time. The effects of low (2.5, 0.2 keV) energy argon ion flux irradiation on the surfaces of polyethylene terephthalate thin foils (PET) were studied. The source of ions was an ECR Ion Gun with settable acceleration voltages. The modified foils were investigated by in-situ X-ray Photoelectron Spectroscopy (XPS) and ex-situ Fourier transform infrared spectroscopy (FTIR). The significant changes in the chemical composition of the surface layer were quantitatively studied by XPS. The scission of the chains in the surface layer of PET foil was induced by ion flux interaction with PET surface. The strong selective sputtering of oxygen atoms in PET film was observed. The atomic ratio O/C was decreased by 0.2keV and 2.5keV argon ion flux from 0.40 to 0.25 and 0.04 respectively. The oxygen atoms in ester bonds are detached first. This phenomenon is responsible for the creation of carbon-rich surface layer. The FTIR analyses identified changes in chemical composition but with no obvious correlation to surface changes. PET volume changes in the spectra were probably results of photons from the ion source influence on PET foils.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/12/1/012007