Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 26: Poster: New Perspectives of Scattering at Soft Matter
CPP 26.3: Poster
Mittwoch, 28. März 2012, 11:00–13:00, Poster A
A SANS study of ‘patchy’ worm-like surface-compartmentalized nanostructures — •Frank Lüdel1, Sabine Rosenfeldt2, Joachim Schmelz3, Ludger Harnau4, Thomas Hellweg1, and Holger Schmalz3 — 1Physical and Biophysical Chemistry III, University of Bielefeld, Germany — 2Physical Chemistry I, University of Bayreuth, Germany — 3Macromolecular Chemistry II, University of Bayreuth, Germany — 4MPI for Intelligent Systems, Stuttgart, Germany
A very promising way towards hierarchically self-organized nanostructures is provided by the crystallization-induced self-assembly of polymers [1-3]. Currently, there is only a partial understanding of a few structures with patch-like surfaces having different compartments. Worm-like micelles with a core-corona structure from a semi-crystalline triblock terpolymer (SEM) in organic media were prepared [1]. Its soluble corona exhibits a patchy structure of microphase-separated polystyrene (S) and poly(methyl methacrylate) (M) enclosing a crystalline polyethylene (E) core. The structure formation is triggered by crystallization during cooling. SANS measurements with contrast variation were performed on a SEM with deuterated S-blocks (dSEM) for studying the structure in solution. Results thereof confirm a compartmentalized structure and are presented in this contribution.
[1] Schmalz, H.; Schmelz, J.; et. al. Macromolecules, 2008, 41, 3235.
[2] Schmelz, J.; et al. ACS Nano, 2011, in print; DOI:10.1021/nn202638t
[3] Tang, Z.; Kotov, N. A. Adv. Mater., 2005, 17, 951.