Berlin 2008 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 34: POSTERS Polymerphysics

CPP 34.37: Poster

Donnerstag, 28. Februar 2008, 17:00–19:30, Poster A

Crosslinkable Polymer Brushes - Synthesis and Characterization — •Sebastian G. J. Emmerling, Andreas Hanewald, and Jochen S. Gutmann — Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany

Atom transfer radical polymerization (ATRP) has opened the way to macromolecular engineering of polymeric materials. In this field, molecular brushes with poly(dimethylsiloxane) (PDMS) side chains were prepared by atom transfer radical polymerization (ATRP) conditions via macromonomer method (grafting through)[1]. The properties of these molecular brushes are dominated by the PDMS side chains, giving rise to numerous applications. In most of the cases, silicones are used as coatings because of their unique surface properties. Polydimethylsiloxane (PDMS) is undoubtedly the most widely used silicone. To produce this polymer living anionic polymerization is employed. However, this method requires stringent purification and stoichiometric conditions, which is a major drawback. The wide range of applications, that illustrates the versatility of this inorganic polymer arises from its unique combination of properties such as low surface tension, low glass transition temperature, high permeability to gas, and excellent weather resistance. However, since PDMS is a fluid at room temperature, the homopolymer lacks dimensional stability. In order to produce silicone-based materials with more desirable mechanical properties, we copolymerize the macromonomer with a benzophenone crosslinker[2].

[1] Neugebauer, D., et al., Macromolecules 2005, 38, 8687.

[2] Beines, P. W., et al., Langmuir 2007, 23, 2231.