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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 5: Composites and Functional Polymer Hybrids
CPP 5.2: Vortrag
Montag, 17. März 2025, 12:00–12:15, H38
Unveiling the Kinetics of Block Copolymer Micelles Close Packing by In Situ GISAXS — •Guangjiu Pan1, Jinsheng Zhang1, Altantulga Buyan-Arivjikh1, Zhuijun Xu1, Stephan V. Roth2,3, and Peter Müller-Buschbaum1 — 1TUM School of Natural Sciences, Chair for Functional Materials, 85748 Garching, Germany — 2DESY, 22607 Hamburg, Germany — 3KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
Packing spheres has long been a key topic in science. While hard spheres often form dense, close-packed structures like face-centered cubic (FCC) lattices, soft spheres, such as block copolymers in selective solvents, tend to arrange into less dense structures. However, when using block copolymer templates in the sol-gel method, these soft spheres can achieve close-packed structures. In this study, in situ grazing-incidence small-angle X-ray scattering (GISAXS) is used to examine the self-assembly and co-assembly processes during the formation of close-packing structures. The results reveal that the hybrid films preferentially develop an FCC structure with cluster nuclei. After the polymer template is removed, a superlattice-like mesoporous metal oxide film is obtained, showcasing the potential for advanced applications due to its well-organized nanostructures.
Keywords: block copolymer; GISAXS; superlattice; hybrid films; crystallization