Regensburg 2013 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 9: Poster: Interfaces and Thin Films (joint session with DECHEMA and VDI)

CPP 9.16: Poster

Montag, 11. März 2013, 17:30–19:30, Poster C

Molecular motions of confined ultra-thin polystyrene films studied by REDLS — Fan-Yen Lin, Tassilo Kaule, Rüdiger Berger, Hans-Jürgen Butt, and •Werner Steffen — Max Planck Institute for Polymer Research, P.O. Box 3148, 55128 Mainz, Germany

Resonance Enhancement Dynamic Light Scattering, REDLS*, is used to probe the surface and interface dynamics of (immiscible) polymers in double-layers. A low Tg (53°C) Polystyrene (PS) is supported by a gold layer and covered by a solid, transparent, high Tg (> 200°C) Polynorbornene (PN) layer polymerized onto the PS layer directly. We observe two Arrhenius-like processes above and below the bulk Tg. The degree of confinement is influenced partly by the thickness of the capping layer. The surface dynamics going from a free PS surface to confined is strongly changed.

*Plum M. A., Menges B., Fytas G., Butt H. J., Steffen W., Rev. Sci. Inst. 2011, 82, (1), 15102