Regensburg 2004 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 15: POSTER: Polymers and Biomaterials
CPP 15.18: Poster
Dienstag, 9. März 2004, 17:00–19:00, B
Domain structure of novel amphiphilic polymers in bulk and in thin films — •Sofiya Raleva1, Bernd Stühn1, Karsten Busse2, Jörg Kressler2, Holger Kautz3, and Holger Frey4 — 1Institute of Solid State Physics, Technische Universität Darmstadt, D-64289 Darmstadt — 2Department of Engineering Science, Martin-Luther-University Halle-Wittenberg, D-06099 Halle — 3Institute of Macromolecular Chemistry, University of Freiburg, D-79104 Freiburg — 4Institute of Organic Chemistry, Johannes Gutenberg University, D-55128 Mainz
We have investigated novel amphiphilic polymers with linear and hyperbrached architecture. One series of amphiphiles are linear blockcopolymers of PEO and Perfluorohexylethylmethacrylate (PFMA). A second series are linear-dendritic poly(propylene oxide)-polyglycerol surfactants. Langmuir-Blodgett films from these materials were deposited from chloroform solutions with concentration 2 mg/ml onto silicon substrates at room temperature and at a surface pressure of 35 mN/m.
Their structural properties were studied using X-ray reflection. The results provide information on film thickness, surface roughness and electron density variation perpendicular to the film surface. Layered structures were found for most samples. The bulk structure was determined using small angle X-ray scattering in Kratky geometry. Layered as well as three dimensional structures were found. We compare the results with the bulk properties of the materials in particular with respect to the stability of the thin films.