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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: Poster Session I
CPP 24.43: Poster
Montag, 16. März 2020, 17:30–19:30, P3
From flower-like micelles to bridged networks: Thermo-responsive block-polymers in solution studied by small-angle neutron scattering. — •Albert Prause1, Michelle Hechenbichler2, Benjamin von Lospichl1, André Laschewsky2,3, and Michael Gradzielski1 — 1Technische Universität Berlin, Department of Chemistry, Berlin, Germany — 2Universität Potsdam, Department of Chemistry, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany — 3Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam, Germany
Mediation between hydrophilic and hydrophobic phases is necessary for almost every application or process, e.g. cleaning, solubilization and stabilization. Best known for this purpose are amphiphilic molecules like surfactants. Usually, it is important to be able to control and adjust rheologic properties like the viscosity of a solution, wherefore polymers were commonly used to obtain the desired rheologic behavior. With this, inducing the possibility of a distinct temperature response to a rheologic property can become highly favorable for applications where temperature can be used to manipulate the rheology. To combine these properties, in this work hydrophobically modified thermo-responsive block-polymers are characterized between 20∘C and 60∘C in D2O. The block-polymers are built of a permantently hydrophilic and a hydrophilic/hydrophobic temperature switchable block with a lower critical solution temperature (LCST). Used monomers are N-dimethylacrylamide (DMA) and monomers with LCST like N-isopropylacrylamide (NiPAm), respectively.