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Regensburg 2007 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: POSTER: Polymer Physics

CPP 8.24: Poster

Montag, 26. März 2007, 16:00–18:00, Poster B

Pulling on Single Siloxane Molecules — •Peter Schwaderer1, Christoph Bräuchle1, Enno Funk2, Frank Achenbach2, Johann Weis3, and Jens Michaelis11Department Chemie und Biochemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, D-81377 München — 2Wacker Chemie AG, Johannes-Hess-Strasse 24, D-84489 Burghausen — 3Consortium für elektrochemische Industrie GmbH, Zielstattstr. 20, D-81379 München

Siliconelastomers are high-performance materials, used in a wide field of applications. Among their remarkable qualities are low temperature dependence of the mechanoelastic properties, high resilience against thermooxidation, high flexibility at low temperatures, inadhesive behavior and physiological harmlessness. On the other hand siliconelastomers also have some disadvantages like low ultimate mechanical strength, vulnerability to hydrolytic reagents and moisture expansion in unpolar environment. Single molecule force spectroscopy using an AFM offers a unique possibility to investigate the mechanical performance of single siloxane polymer chains and their fixation in thin polymer networks. Both theoretical as well as experimental single molecule measurements can help to gain insights into the properties of the Si-O bond.

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