Regensburg 2013 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

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

CPP 9.13: Poster

Monday, March 11, 2013, 17:30–19:30, Poster C

Mechanism analysis of symmetric adhesion of water-swelling polymer films — •Rina Iikubo, Markus Schindler, and Peter Müller-Buschbaum — TU München, Physik Department, LS Funktionelle Materialien, James-Franck-Str.1, 85748 Garching, Germany

Commonly symmetric adhesion between polymer films is studied in case of hydrophobic polymers. The symmetric adhesion of polymer films which swell in water, which ubiquitously exist around our atmosphere, is less investigated despite its technological importance and scientific interest. Previous studies on our model system consisting of the statistical copolymer poly(ethylhexylacrylate-stat-methylmethacrylate) have shown that the two components of the polymer establish an enrichment layer of methylmethacrylate(MMA) at the top surface, and the MMA content changes depending on the relative humidity. PMMA is also studied as the polymer film which swells in water. We present a study on the influence of water on the internal reorganization of adhesive films that include PMMA as one component, its behavior on symmetric adhesion and discuss the effect of hydration on the surface composition and entanglement of surface molecules.