The Structural and Thermal Behavior of The Thermoresponsive Polymer Poly(N-isopropylmethacrylamide) in Aqueous Solution

15 May 2019, 19:00
3h
Institute of Advanced Study (TUM Campus Garching)

Institute of Advanced Study

TUM Campus Garching

Lichtenbergstraße 2a, 85748 Garching

Speaker

Chia-Hsin Ko (Technische Universität München)

Description

Compared to poly(N-isopropylacrylamide) PNIPAM, poly(N-isopropylmethacrylamide) PNIPMAM shows different behavior, though it has a similar chemical structure, only with additional methyl groups on the backbone, e.g. a higher transition temperature (43 °C instead of 32 °C). We studied the temperature-dependent phase behavior of PNIPMAM in D2O using small-angle neutron scattering. Different from PNIPAM, inhomogeneities and physical crosslinks appear in the one-phase state due to the methyl groups.

Primary authors

Chia-Hsin Ko (Technische Universität München) Kora-Lee Claude (Technische Universität München) Dirk Schanzenbach (Institute of Chemistry, University of Potsdam) Bart-Jan Niebuur (TU München, Physik weicher Materie) Florian Jung (Technische Universität München) Jia-Jhen Kang (Technical University of Munich) Henrich Frielinghaus (JCNS) Lester Barnsley (Jülich Centre for Neutron Science) Vitaliy Pipich Baohu Wu (JCNS-MLZ, FZ Juelich) Alfons Schulte (University of Central Florida) Peter Müller-Buschbaum (TU München, Physik-Department, LS Funktionelle Materialien) André Laschewsky (Institute of Chemistry, University of Potsdam) Christine Papadakis (Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie)

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