Stuttgart 2012 – scientific programme
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P: Fachverband Plasmaphysik
P 14: Poster: Plasmatechnologie
P 14.12: Poster
Wednesday, March 14, 2012, 16:30–19:00, Poster.III
Plasma polymerized ethylenediamine: thin film characterisation and long-time stability for adhesion of human osteoblastic cells — •Holger Testrich1, Henrike Rebl2, Birgit Finke3, Barbara Nebe2, and Jürgen Meichsner1 — 1University of Greifswald, Institute of Physics, Felix-Hausdorff-Str. 6, 17487 Greifswald — 2University of Rostock, Centre of Medical Research, Schillingallee 69, 18057 Rostock — 3Leibniz Institute for Plasma Science and Technology, Felix-Hausdorff-Str. 2, 17487 Greifswald
Low pressure capacitively coupled 13.56 MHz plasma in a mixture of argon and ethylenediamine was applied for deposition of plasma polymerized ethylenediamine (PPEDA) thin films (20-100 nm) on Ti-6Al-4V samples (diameter 11 mm, thickness 2 mm) relevant for endoprosthesis. The molecular structure and chemical composition of the thin PPEDA films were characterized by Infrared-spectroscopy (FT-IRRAS) and X-ray photoelectron spectroscopy (XPS). The cell adhesive properties of PPEDA thin films were tested using human osteoblastic cells MG-63 (ATCC). The changes of the molecular structure and chemical composition of the PPEDA films were investigated simultaneously with cell adhesion tests in dependence on the storage time under ambient air over 360 days. Although the PPEDA thin films are altered significantly within the first 30 days after deposition due to reaction with oxygen, the surface of the PPEDA thin film remains its cell adhesive properties compared with the uncoated reference sample. Funded by BMBF collaborative research project ''Campus PlasmaMed'', grant no 13N9774.