Surface and bulk properties of soft nanocomposites [Elektronische Ressource] / Sascha Alexander Pihan

SURFACE AND BULK PROPERTIES OF SOFT NANOCOMPOSITES DISSERTATION zur Erlangung des Grades „Doktor der Naturwissenschaften“ am Department Chemie-Biologie der Universität Siegen vorgelegt von Dipl. –Ing. M.Sc. Sascha Alexander Pihan geboren in Bad-Soden am Taunus Mainz, den 19. April 2011 Die vorliegende Arbeit wurde in der Zeit von August 2008 bis April 2011 unter der Betreuung von Dr. Rüdiger Berger und Prof. Holger Schönherr am Max-Planck-Institut für Polymerforschung in Mainz angefertigt. 1. Berichterstatter: Prof. Dr. Holger Schönherr 2. Berichterstatter: Prof. Dr. Hans-Jürgen Butt Abstract In the context of my thesis I describe my investigations of the interaction of surface grafted polymer brushes with homopolymers. The interaction of surface grafted polymer brushes and homopolymers 1is mainly determined by their molecular weight r.a tByi otailoring this molecular weight ratio, 2fasc inating, new effects can be obtained: e.g. a controlled self assembly of nanoor particles3increased surface wear resist.an Fcuerthermore the geometry of the surface to which the polymers are grafted plays a major role. In particular, not only flat surfaces can be coated, also curved surfaces like nanoparticles can be coated with dense polymer brush layers. Composites of polymer grafted nanoparticles with like homopolymers show intriguing material properties that are used in high technology products such as car tires.