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CPP: Chemische Physik und Polymerphysik
CPP 8: Physics of Polymers II
CPP 8.6: Vortrag
Montag, 8. März 2004, 17:00–17:15, H 37
Infrared ellipsometric study of miscibility in thin double layers of two polymers — •K. Hinrichs1, A. Röseler1, E.H. Korte1, N. Nikonenko2, J. Pionteck3, and K.-J. Eichhorn3 — 1Institut für Spektrochemie und Angewandte Spektroskopie - Institutsteil Berlin, — 2B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, F. Scaryna Ave. 68, 220072 Minsk, Belarus — 3Institut für Polymerforschung Dresden e.V., Hohe Str. 6, D-01069 Dresden
Mid infrared spectroscopic ellipsometry [1] has been applied for the investigation of poly-(n-butyl methacrylate) / poly(vinyl chloride) double layers (100 nm each) on gold substrates and to analyze the process of mixing caused by interdiffusion during annealing [2]. Interpretation of the ellipsometric spectra in optical layer models allows the determination of the thickness, the high frequency refractive index and the parameters of molecular vibrations of the different polymer compounds. For a more detailed evaluation infrared ellipsometry is used in combination with a regularized deconvolution method [3]. The deconvolution method allowed to determine positions of overlapping vibrational bands and to investigate the shape of their profile. Annealing induced spectral changes were discussed with respect to the miscibility and conformational changes in the polymer film. [1] Hinrichs, K., Tsankov, D., Korte, E.H., Röseler, A., Sahre, K., Eichhorn, K.-J. Appl. Spectrosc. 2002, 56, 737. [2] Dlubek G., Bondarenko, V., Pompe G., Taesler Ch., Petters K., Krause-Rehberg R., Macromolecules 2002, 35, 6313; Dlubek G., Pompe G., Pionteck J., Janke, A., Kilburn, D. Macromol. Chem. Phys. 2003, 204, 1234. [3] Buslov, D. K., Nikonenko, N. A. Appl. Spectrosc. 1997, 51, 666.