Abstract
Surface properties of commercially available poly(ethylene terephthalate) (PET) foils of different thicknesses (3, 13, 23, 50, and 100 μm) were characterized using different analytical methods. Surface roughness and morphology were determined by atomic force microscopy, goniometry was used for determination of contact angle (wettability of surface) and electrokinetical analysis (zeta potential) for characterization of surface polarity and conductivity. X-ray photoelectron spectroscopy was used for characterization of PET surface chemistry. Infrared spectroscopy and differential scanning calorimetry (DSC) were used for determination of crystallinity portion. By DSC analysis, it was confirmed that the crystallinity portion depends on the foil thickness. Most important result of this study is that the surface properties of PET foils depend not only on the foil thickness but also on the foil side under study. This finding may be of importance for future experiments performed on PET foils and for their application in tissue engineering or microelectronics.
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The authors gratefully acknowledge the financial support from the Grant Agency of Czech Republic, project no. P108/12/G108.
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Kolská, Z., Řezníčková, A., Hnatowicz, V. et al. Surface properties of poly(ethylene terephthalate) foils of different thicknesses. J Mater Sci 47, 6429–6435 (2012). https://doi.org/10.1007/s10853-012-6573-1
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DOI: https://doi.org/10.1007/s10853-012-6573-1