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DY: Fachverband Dynamik und Statistische Physik

DY 25: General Session to the Symposium: Interplay of Substrate Adaptivity and Wetting Dynamics from Soft Matter to Biology (joint session CPP/DY)

DY 25.4: Vortrag

Mittwoch, 7. September 2022, 10:15–10:30, H39

Mixed grafted homopolymer and diblock copolymer functional brush layers upon humidity alterations: nanoscale morphology and transformations — •Apostolos Vagias¹, Theodore Manouras², Eleftherios Koufakis^2,3, Peixi Wang⁴, Marcell Wolf¹, Fabian A. C. Apfelbeck⁴, Sigrid Bernstorff⁵, Maria Vamvakaki^2,3, and Peter Müller-Buschbaum^1,4 — ¹Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, 85748 Garching, Germany — ²Foundation for Research and Technology (F.O.R.T.H.) Hellas, Institute of Electronic Structure and Laser,700 13 Heraklion, Crete, Greece — ³Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Crete, Greece — ⁴Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, 85748 Garching, Germany — ⁵Elettra Sincrotrone Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy

Using in situ grazing-incident small-angle X-ray scattering (GISAXS) measurements during water vapor uptake, we study the nanostructure morphology in the dry state, during vapor swelling and in the fully swollen state, for thin (<100nm) films of poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) and poly(fluoroalkyl methacrylate) (POFPMA) homopolymer and PDMAEMA-b-POFPMA block copolymer dual functional, bactericidal and antifouling, brushes. Our surface energy and swelling studies, stress on the role alkyl chain length, charged groups and brush topology in morphology, for the brush functionality.