Pressure induced reverse micellization of PNIPAM based micelles
We are interested in the pressure dependence of micelles in aqueous solution based on poly(N-isopropyl acrylamide). Linear precipitated PNIPAM-based chains showed a pressure-dependant solvation above its transition temperature. This should lead in case of micelles to a dissolution of the self-assemblies when using a PNIPAM-based core-forming block. Hence, pressure can then act as a stimulus to induce and reverse micellization. This would be to our best knowledge the first prove of an order-disorder transition of micelles upon induced pressure. A good method to detect the pressure-dependent changes of PNIPAM micelles in aqueous solution is SANS. The D11 instrument would provide a high contrast and the perfect q-value range to determine the pressure dependence of size and morphology of our micelles/dissolved diblock copolymers.
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STEINSCHULTE Alexander; GEISEL Karen; GROBELNY Sebastian; HOFMANN Christian; JANSEN Felicitas; JUNG Andre; PLAMPER Felix; SCHWEINS Ralf; WARREN Nicholas and WINTER Roland. (2015). Pressure induced reverse micellization of PNIPAM based micelles. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1414
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