Dresden 2020 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: Poster Session III

CPP 50.46: Poster

Dienstag, 17. März 2020, 14:00–16:00, P1C

The thermoresponsive diblock copolymer PMMA-b-PNIPAM in aqueous solution: Influence of copolymer composition on micelle formation — •Nadir Aziz¹, Chia-Hsin Ko¹, Cristiane Henschel², Peter Müller-Buschbaum¹, André Laschewsky^2,3, and Christine M. Papadakis¹ — ¹Physics Department, Technical University of Munich, Garching, Germany — ²Institut für Chemie, University of Potsdam, Potsdam-Golm, Germany — ³Fraunhofer Institute for Applied Polymer Research IAP, Potsdam-Golm, Germany

Amphiphilic diblock copolymers having a hydrophobic poly(methyl methacrylate) (PMMA) block and a thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) block form core-shell micelles in aqueous solution. The PNIPAM shell collapses at the cloud point of this block, and the micelles form large aggregates. We investigate the role of the block copolymer composition on the critical micellization concentration, the micellar size and shape as well as the collapse behavior at the cloud point. At this, we use fluorescence correlation spectroscopy and dynamic light scattering.